Senior Back-end Engineer (Node.js)

🏢 Summary: Mid Back-end Developer role focused on building and maintaining scalable backend services for an InsurTech product. The position involves developing APIs, integrating with data stores and third-party services, ensuring security, and deploying applications using modern cloud and container technologies. The role emphasizes automated testing, production reliability, and secure real-time decision-making systems. 🗂️ Requirements: Minimum 3 years experience with Node.js, Strong knowledge of JavaScript and TypeScript, Practical experience with relational databases, Ability to design and discuss software architecture, Experience implementing unit, integration, and end-to-end tests, Experience with containerization and cloud-based deployments, Knowledge of secure coding practices 📃 Skills: Node.js, JavaScript, TypeScript, Nest.js, PostgreSQL, MySQL, SQLServer, SQL, Docker, Kubernetes, Fargate, Lambda, BigQuery, Prometheus, Git, APIs, E2E 🏢 Description: SwingDev—a hippo company is the Polish branch of a fast-growing InsurTech product company – Hippo Insurance. We’re here to make home insurance smarter and more proactive, using tech to bring fresh solutions. We also create digital products that support our customers, always focusing on what really makes an impact. Putting a lot of effort into hiring top-tier professionals is a proof that we care a lot about tech experience, the attitude, human approach, and what we could call „culture fit”. „SwingDev is all about people” - yes, it may sound a bit cliche. But whether we're writing code or just hanging out, we know that people are at the heart of everything we do. We like to have a good time and keep things light, even when we're tackling big projects. We could brag about what’s making us special, but we’ve boiled it down to two key ingredients: mature, companionable people who, rather than compete, prefer to inspire and have each other’s backs; a culture of trust, empathy, and positivity that keeps us together, lets us interact as teammates and friends, and truly enjoy the ride. So if you're a Mid Back-end Developer looking to shake things up and have a good time while you're at it, you’ve come to the right place. 🚀 What will you do? You'll implement backends and their interactions with various data stores and other APIs (including 3rd party APIs). You'll work in an agile environment focusing on projects that are impactful on our business. You'll support reliable databases and APIs for real-time automated decision-making. You'll deploy your software using industry-standard tooling like Kubernetes clusters, and Lambda functions. You'll investigate and resolve production issues by analyzing code, data, and system behavior and then propose and implement timely fixes to minimize user impact. You'll care deeply about security in everything you do and constantly raise the baseline of how we defend our user's data against external threats and themselves. You'll implement robust automated test suites to ensure high quality and low failure rate of delivered code. You'll work closely with Product Managers, Senior Engineers and Architects to understand business processes, rules, and requirements, and turn them into high-quality code with automated tests, and deploy them to production. You’ll have a lot of chances to develop your programming skills as well as learn a lot about how tech business is done in the US (if you want to). We might be a match if you… Have at least 3 years of hands-on experience with Node.js, JavaScript, and TypeScript. Possess a good, practical knowledge of at least one relational database system, e.g. PostgreSQL/MySQL/SQL Server. Can engage in discussions and decisions regarding software design and architecture. Have experience implementing the test pyramid (unit, integration, e2e tests). Are a team player and a good communicator, with the ability to convey ideas clearly across technical and non-technical teams. Can demonstrate responsibility, accountability, and a strong sense of ownership in delivering high-quality work. Utilize good security practices effectively. Show readiness to learn and expand your skill set as required by ongoing projects. Have a good command of English (written & spoken). Are available in the afternoons – we prioritize everyone’s personal time and work-life fit, but since we work in multinational teams, occasional evening meetings may be necessary to ensure smooth communication across time zones. What you'll be using after joining us: Node.js, TypeScript, Nest.js, Docker and container-based deployment technologies (e.g. Kubernetes/Fargate), Automated software testing on unit/integration/end-to-end levels. You will get extra points for: Experience with data analysis and BigQuery. Familiarity with observability tools such as Prometheus. Experience with git, source control system and code reviews. Recruitment process: Send us your CV – it's the best way for us to get to know you. Meet one of our Recruiters. Complete a 30-minute one-way interview. Join a Live Coding session with our Senior Engineers. Have a chat with your potential Engineering Manager. Meet on the final stage with Marcin and Alicja . and... welcome aboard! 👋 What benefits are waiting for you? Salary: 23 000 – 26 000 PLN + VAT on B2B. Basics 📝 Form of employment of your choosing 🌎 Remote work & flexible working hours 🏖️ Non-service days Health & Safety 💊 Private medical care with dentists & orthodontists package for you and your family ❤️ Group life insurance 🧘 Psychotherapists support — free online sessions with psychologists and psychotherapists 🤸 Home physiotherapy 🏅 Multisport card & meditation apps reimbursed 50% Working conditions & Development 💻 Gear with Apple Logo and monitor 🌱 50% reimbursement for courses, conferences, books & certificates 🇺🇸 Free access to private language lessons 🐕 6 Personal Development & 4 Voluntary Non-service days Extras you may like 🎫 Cafeteria platform — extra “stówka”every month to spend on whatever you want to 🧒 Nanny services for parents 📦 Concierge services – a personal assistant to help you to deal with your everyday matters 🎮 Chill room with table football & PlayStation 5 🍦 Free snacks, and ice cream in the office (every day, all year round!) 🍱 Free Friday Lunch in the office 🎉 Team building events — we party together several times a year during the annual Offsite & Christmas Parties, beer after work, or our #WinterEscapeMonth workation in Cyprus.

🏢 Summary: The role involves designing and building a next-generation quoting platform that powers the pre-bind experience and drives business growth. The Senior Back-end Engineer will architect and implement scalable backend systems, integrate with databases and third-party APIs, and support real-time decision-making. This is a high-impact, long-term initiative focused on developing mission-critical systems using a modern tech stack. 🗂️ Requirements: Strong hands-on experience with TypeScript, Strong hands-on experience with JavaScript, Strong hands-on experience with Node.js, Practical knowledge of at least one relational database (PostgreSQL, MySQL, or SQL Server), Experience with microservices architecture, Experience with system design patterns, Experience designing and implementing APIs, Experience integrating with third-party APIs, Understanding of software development best practices, Experience with automated testing, Experience ensuring software maintainability and security, Ability to communicate effectively in English and Polish, Availability for afternoon hours and occasional evening meetings 📃 Skills: TypeScript, JavaScript, Node.js, PostgreSQL, MySQL, SQLServer, Microservices, REST, APIs, SQL, Testing, Git 🏢 Description: SwingDev–a hippo company is the Polish branch of a fast-growing InsurTech product company – Hippo Insurance. We’re here to make home insurance smarter and more proactive, using tech to bring fresh solutions. We also create digital products that support our customers, always focusing on what really makes an impact. Putting a lot of effort into hiring top-tier devs, designers, PMs, and QAs, is a proof that we care a lot about tech experience, the attitude, human approach, and what we could call „culture fit”. „SwingDev is all about people” - yes, it may sound a bit cliche. But whether we're writing code or just hanging out, we know that people are at the heart of everything we do. We like to have a good time and keep things light, even when we're tackling big projects. We could brag about what’s making us special, but we’ve boiled it down to two key ingredients: mature, companionable people who, rather than compete, prefer to inspire and have each other’s backs; a culture of trust, empathy, and positivity that keeps us together, lets us interact as teammates and friends, and truly enjoy the ride. As a Senior Back-end Engineer , you’ll join one of our core technical charter responsible for building the foundation of how quoting works at Hippo. You’ll help design and deliver the next-generation quoting platform, a critical system that powers the top of our sales funnel and directly influences business growth. Your work will enable more accurate estimates for homes while supporting the company’s strategic focus on new home insurance – a key growth area. This isn’t a short-term initiative, it’s a high-impact, long-term investment at the heart of our product and revenue engine. You’ll tackle complex product challenges using a modern tech stack, collaborate closely with a highly skilled team, and develop deep expertise in the home insurance domain. This is an opportunity to shape a mission-critical platform, drive measurable business outcomes, and grow as a technical expert along the way. What will you do? You'll work on building the next-generation quoting platform which will power the pre-bind experience for both internal and external partners ultimately driving the big rock of growth and profitability for the company. You’ll partner closely with product, engineering, and business teams across multiple domains to drive meaningful projects from concept to delivery. You'll architect and implement backends and their interactions with various data stores and other APIs (including 3rd party APIs). You'll support reliable databases and APIs for real-time automated decision-making. You’ll design, build, and maintain reliable software solutions that power critical parts of the business. You’ll actively shape our software architecture, bringing your ideas and expertise into technical discussions. You’ll work closely with product managers and QA engineers to ensure we deliver software of the highest quality. You’ll balance maintaining existing systems with developing new features, ensuring stability while pushing innovation. We might be a match if you… Have strong hands-on software development experience with TypeScript, JavaScript, and Node.js . Possess solid, practical knowledge of at least one relational database system (e.g., PostgreSQL, MySQL, or SQL Server). Are a product-minded engineer with a strong sense of ownership and accountability for delivering impactful solutions. Demonstrate technical excellence, either individually or by elevating the team around you. Understand and apply software development best practices, from clean code and testing to long-term maintainability and security. Have experience with microservices, system design patterns, and actively contribute to architecture and design decisions. Communicate effectively in writing and speech, with a strong command of English and Polish, and collaborate well with product, analytics, and business teams. Actively seek feedback and mentorship to support your continuous growth. Are available to work in the afternoon hours, including occasional evening meetings due to U.S. time zone collaboration (we respect work-life balance but prioritize effective communication) What benefits are waiting for you? Basics 📝 Form of employment of your choosing 🌎 Remote work & flexible working hours 🤒 Paid sick leave 🏖️ Paid holidays Health & Safety 💊 Private medical care with dentists & orthodontists package for you and your family ❤️ Group life insurance 🧘 Psychotherapists support — free online sessions with psychologists and psychotherapists. 🤸 Home physiotherapy 🏅 Multisport card & meditation apps reimbursed 50% Working conditions & Development 💻 Gear with Apple Logo and a nice Dell monitor 🌱 50% reimbursement for courses, conferences, books & certificates 🇺🇸 Free access to private language lessons 🐕 6 Personal Development Days & 4 Voluntary Days Off Extras you may like 🎫 Cafeteria platform — extra “stówka”every month to spend on whatever you want to 🧒 Nanny services for parents 📦 Concierge services – a personal assistant to help you to deal with your everyday matters 🎮 Chill room with table football & PlayStation 4 🍦 Free snacks, and ice cream in the office (every day, all year round!) 🍱 Free Friday Lunch in the office 🎉 Team building events — we party together several times a year during the annual Offsite & Christmas Parties, beer after work, or our #WinterEscapeMonth workation in Cyprus Recruitment process: Send us your CV – it's the best way for us to get to know you. Meet Ola , one of our Recruiters. Complete a 30-min one-way interview. Meet our engineers for a live coding session. Interview with Priyank (manager interview). Meet on the final stage with Marcin and Alicja . and... welcome aboard! 👋

🏢 Summary: Two QA Engineer roles focused on ensuring high product quality in either a front-end (Salesforce, UI testing) or back-end (API, SQL, microservices) environment. The position involves close collaboration with engineering and product teams, covering requirement analysis, test planning, execution, regression, and release sign-off. The role emphasizes manual testing expertise with growing automated test coverage and strong involvement in integration and end-to-end testing. 🗂️ Requirements: 3+ years of QA experience focused on manual testing, Knowledge of QA methodologies, tools, and processes, Experience with Black Box, White Box, and Grey Box testing, Experience with integration, functional, end-to-end, and API testing, Experience designing, executing, and reporting test cases for complex systems, Experience with test case management tools (preferably XRay), Experience with API testing using Postman or Swagger OR front-end testing with Salesforce, Understanding of microservices architecture and PostgreSQL (for back-end role), Ability to collaborate on requirement analysis and test planning, Very good English (written and spoken) 📃 Skills: QA, ManualTesting, BlackBox, WhiteBox, GreyBox, APITesting, Postman, Swagger, SQL, PostgreSQL, Microservices, Salesforce, XRay, Jira, CI/CD, Agile 🏢 Description: We’re currently hiring for two QA Engineer roles, each with a slightly different focus. One position is more front-end oriented, working closely with Salesforce and UI testing, while the other leans toward back-end, involving API testing, SQL, and a microservices-based environment. If you’re passionate about quality and enjoy working either on the user-facing side or deeper in the system architecture, we’d love to hear from you! Feel free to check out our careers page for more details on each role: https://www.swing.dev/careers About us: SwingDev—a hippo company is the Polish branch of a fast-growing InsurTech product company – Hippo Insurance. We’re here to make home insurance smarter and more proactive, using tech to bring fresh solutions. We also create digital products that support our customers, always focusing on what really makes an impact. Putting a lot of effort into hiring top-tier professionals is a proof that we care a lot about tech experience, the attitude, human approach, and what we could call „culture fit”. „SwingDev is all about people” - yes, it may sound a bit cliche. But whether we're writing code or just hanging out, we know that people are at the heart of everything we do. We like to have a good time and keep things light, even when we're tackling big projects. We could brag about what’s making us special, but we’ve boiled it down to two key ingredients: mature, companionable people who, rather than compete, prefer to inspire and have each other’s backs; a culture of trust, empathy, and positivity that keeps us together, lets us interact as teammates and friends, and truly enjoy the ride. So if you're a QA Engineer looking to shake things up and have a good time while you're at it, you’ve come to the right place. 🚀 What will you do? You'll deeply collaborate with 1-2 Engineering teams. This includes actively participating in the development of new features and initiatives, from initial requirement analysis and test planning to execution, regression testing, and final release sign-off. You'll partner closely with Product Managers. This means you will be responsible for prioritizing testing efforts, clarifying requirements, challenging assumptions from a quality perspective, coordinating Business Acceptance Testing, and advocating for the needs of our customers. You'll work closely with SDETs to expand and maintain our automated test coverage for new features and regression testing. You'll also collaborate with other manual QA engineers on cross-team and cross-BU projects. You'll proactively identify and mitigate potential risks, ensuring that our products meet the highest standards of quality and reliability. We might be a match if you… Have 3+ years of QA experience, with a focus on manual testing (Black Box, White Box, and Grey Box). Have a good knowledge of software QA methodologies, tools, and processes. Have a good understanding of testing integration, functional, end-to-end, and API tests. Have experience with test case design, execution, and reporting for complex systems (front-end and back-end). Have an ability to create test cases and collections that exercise the requirements and business rules in colaboration with PMs. Worked with test case management tools (preferably XRay). Have good analytical skills and attention to detail. Are an independent problem solver but also a collaborative team player. Have experience either with API Testing (using Postman/Swagger), microservices, PostgreSQL OR front-end testing and Salesforce (depending on the role – please visit our careers page ). Have a great command of English (written & spoken) and at least basic of Polish. Are available in the afternoons – we prioritize everyone’s personal time and work-life fit, but since we work in multinational teams, occasional evening meetings may be necessary to ensure smooth communication across time zones. You will get extra points for: Experience working in a product company, ideally a startup/scale-up. Familiarity with CI/CD pipelines and their impact on the QA process. Experience with Jira and agile testing methodologies. What benefits are waiting for you? Salary: 14 000 – 16 000 PLN + VAT on B2B or equivalent on the contract of employment Basics 📝 Form of employment of your choosing 🌎 Remote work & flexible working hours 🏖️ Non-service days Health & Safety 💊 Private medical care with dentists & orthodontists package for you and your family ❤️ Group life insurance 🧘 Psychotherapists support — free online sessions with psychologists and psychotherapists. 🤸 Home physiotherapy 🏅 Multisport card & meditation apps reimbursed 50% Working conditions & Development 💻 Gear with Apple Logo and monitor 🌱 50% reimbursement for courses, conferences, books & certificates 🇺🇸 Free access to private language lessons 🐕 6 Personal Development & 4 Voluntary Non-service days Extras you may like 🎫 Cafeteria platform — extra “stówka”every month to spend on whatever you want to 🧒 Nanny services for parents 📦 Concierge services – a personal assistant to help you to deal with your everyday matters 🎮 Chill room with table football & PlayStation 5 🍦 Free snacks, and ice cream in the office (every day, all year round!) 🍱 Free Friday Lunch in the office 🎉 Team building events — we party together several times a year during the annual Offsite & Christmas Parties, beer after work, or our #WinterEscapeMonth workation in Cyprus

🏢 Summary: The offer is for a Software Engineer (Agent Development) role focused on building and scaling production-ready AI agents and autonomous marketing workflows. The position combines strong backend engineering with applied GenAI, emphasizing reliable, scalable systems integrated into a live marketing automation platform. The role involves working with LLM orchestration, backend services, and AI-driven integrations in a fast-paced, collaborative environment. 🗂️ Requirements: 2–4 years of software engineering experience, Strong experience in Python and scalable backend development, Understanding of building production-ready, maintainable systems, Interest in AI, GenAI, and agentic systems, Experience with backend databases such as MySQL, Redis, or DynamoDB, Ability to work in fast-paced, iterative environments, Strong problem-solving skills, Ability to collaborate with cross-functional and distributed teams 📃 Skills: Python, GenAI, LLM, MySQL, Redis, DynamoDB, APIs, CI/CD, Cloud, AI, Agents 🏢 Description: Our client helps small teams power big businesses with the must-have platform for intelligent marketing automation. Customers from over 170 countries depend on the Client’s mix of pre-built automation and integration to power personalized marketing, transactional emails, and one-to-one CRM interactions throughout the customer lifecycle. We’re looking for a Software Engineer (Agent Development) to join our client’s growing AI team and help build the next generation of autonomous AI agents powering modern marketing workflows. In this role, you’ll work at the intersection of backend engineering and applied AI, designing and scaling production-ready agentic systems used by businesses worldwide. This is not a pure research role. The focus is on strong software engineering fundamentals and building reliable, scalable AI-powered products. You’ll work across backend systems, orchestration, integrations, and AI workflows, collaborating closely with cross-functional product and engineering teams. The environment is fast-paced and highly collaborative, with a strong emphasis on ownership, rapid iteration, and building real-world AI solutions already running in production. Key takeaways: Stack: Python, AI Agents, MySQL, GenAI Salary : 20 000 - 23 000 PLN gross/month, Contract of employment (+10% annual bonus, 75% Creative Tax) Working model: Hybrid, once a week in the office Location: Krakow, ul. Konopnickiej Recruitment process: Call with MOTIFE recruiter (30 min) Technical interview, live coding (1h) Cross-functional interview (1h) Interview with Hiring Manager (45 min) | Optional Responsibilities: Design and develop production-grade AI agents and autonomous marketing workflows across the platform. Build and maintain multi-step agentic systems involving LLM orchestration, tool usage, and backend integrations. Work with LLM APIs, including prompt engineering, response handling, evaluation, and optimization of AI workflows. Create and improve evaluation frameworks, quality metrics, and monitoring processes to ensure agent reliability and performance at scale. Monitor and optimize agent behavior, latency, token usage, cost efficiency, and production stability. Develop production-quality backend services and orchestration layers primarily using Python. Contribute to backend and frontend integration points where AI agents interact with the core platform. Build and maintain APIs, service interfaces, and data flows supporting AI-driven capabilities. Collaborate closely with Product, Design, and Engineering teams to define and deliver AI-powered user experiences. Ensure code quality through testing, code reviews, and adherence to engineering best practices. Participate in on-call rotations supporting AI agent services and platform reliability. Contribute to technical documentation, architectural decisions, and AI engineering best practices. Collaborate closely with globally distributed teams, including regular overlap with US-based stakeholders. Requirements: 2–4 years of experience in software engineering, with strong backend development fundamentals. Strong hands-on experience with Python and building scalable backend services. Interest in AI, GenAI, and agentic systems, with a willingness to grow in this area professionally. Exposure to AI-related projects, LLM-based solutions, ML models, or personal AI experiments is considered a strong plus. Understanding of how to build reliable, maintainable, and production-ready systems. Ability to work in fast-paced, iterative environments and ship code quickly while maintaining engineering quality. Familiarity with modern backend and database technologies such as MySQL, Redis, or DynamoDB. Strong problem-solving skills and the ability to work across different systems and technologies. Experience with cloud environments, APIs, CI/CD practices, or observability tooling is a plus. Familiarity with AI agent frameworks, prompt engineering, or LLM workflows is nice to have, but not required. Strong communication skills and a collaborative mindset within cross-functional engineering teams. Willingness to collaborate with globally distributed teams, including regular overlap with US-based stakeholders. What we offer: Health Benefits 1. Medical Full coverage for employees and their dependents through LUX MED. Employees have access to the “Premium” package, providing enhanced coverage and greater access to care. A client pays 100% of the premium for employees and 50% for dependents. 2. Dental No additional cost for dental coverage- integrated into LUX MED medical plan. 3. Vision Reimbursement for vision expenses up to 400 PLN every 2 years. Mental Health Tools Access to TELUS Health EAP to provide support and resources in a time of need. Additional Benefits 10% annual bonus 75% Creative Tax Vacation: 26 days. Home Office Stipend: One-time $150 equivalent home office stipend to outfit their home office. Calm Subscription: Premium subscription access to Calm, the #1 app for sleep, meditation, and relaxation. Hub Perks: Receive meal and transportation benefits when traveling to the Poland Hub. Baby Swag: If you have a baby or adopt, you’ll receive a company-branded first bath bundle. Sabbatical Program: After 5 years of employment, receive a month-long paid sabbatical leave, with a sabbatical leave bonus.

🏢 Summary: Full-Stack Senior Software Engineer role focused on building user-facing web applications and conversational interfaces for AI-driven logistics systems. The position involves designing intuitive human–AI interaction flows and integrating frontend applications with backend services and agent-based AI systems. It combines strong frontend development with backend integration to deliver scalable, high-quality end-to-end solutions. 🗂️ Requirements: Strong full-stack software engineering experience, Proficiency in JavaScript and TypeScript, Experience with React or similar frontend frameworks, Solid understanding of backend systems and APIs, Experience integrating frontend with backend services and APIs, Experience building user-facing applications with focus on usability and performance, Understanding of UX principles and interaction design, Experience working with asynchronous workflows and real-world data, Familiarity with AI-powered applications or conversational interfaces, Experience with cloud platforms (AWS, GCP, or Azure), Strong debugging skills across frontend and backend 📃 Skills: JavaScript, TypeScript, React, Next.js, APIs, REST, UX, LLM, AWS, GCP, Azure, HTML, CSS 🏢 Description: What's the role? We are looking for a strong Full-Stack Senior Software Engineer to build intuitive, high-quality user experiences for next-generation agentic AI solutions in the logistics domain. The systems developed by this team optimize deliveries at scale improving driver efficiency, increasing reliability, reducing operational costs, and lowering environmental impact. In this role, you will develop user-facing web applications and conversational interfaces that enable users to interact seamlessly with AI-powered systems. You will focus on creating clear, efficient, and reliable human–AI interaction flows, while integrating tightly with backend services, agent systems, and APIs. This is a hands-on role that requires both strong frontend expertise and solid backend understanding , along with a sharp sense of product and user experience. What You’ll Do: Design and build user-facing web applications and conversational interfaces for AI-driven logistics workflows Develop intuitive human AI interaction flows that make complex system behavior understandable and usable Implement frontend applications using modern frameworks (e.g., React, Next.js) with a strong focus on performance and usability Integrate UI layers with backend services, agent systems, and APIs to deliver end-to-end functionality Collaborate with backend engineers and AI engineers to ensure smooth data flow and system interactions Translate product requirements and user needs into clean, usable, and scalable UI solutions Contribute to backend components where needed (e.g., API integration, lightweight services, orchestration logic) Ensure high-quality delivery through testing, monitoring, and continuous iteration based on user feedback Improve overall user experience through better workflows, interaction patterns, and system responsiveness Leverage AI-assisted development tools to improve development speed and code quality Who are you? What We’re Looking For: Software engineering experience with strong full-stack development skills Strong proficiency in frontend technologies (JavaScript/TypeScript, React or similar frameworks) Solid understanding of backend systems, APIs, and service integration patterns Experience building user-facing applications with a focus on usability, performance, and maintainability Good understanding of UX principles and ability to design flows that simplify complex systems Experience integrating with APIs and working with real-world data and asynchronous workflows Familiarity with AI-powered applications (e.g., conversational interfaces, LLM integrations, agent-driven systems) is a strong plus Experience with cloud platforms (AWS, GCP, or Azure) and modern development practices Strong debugging and problem-solving skills across frontend and backend layers Ability to work independently on well-defined problems and collaborate effectively in cross-functional teams Good communication skills and a strong sense of ownership What We Offer: The opportunity to tackle meaningful and challenging problems A chance to continuously learn and stay on top of the latest technology trends Work that has real-world impact, shaping the future of mobility and technology Regular feedback to help you grow and succeed in your role A collaborative and supportive team environment where your contributions are valued Competitive salary plus bonus Flexible working hours and a hybrid working environment Medical coverage for you and your family This role is eligible for Creative Tax Incentive scheme in Poland” or KUP (Autorskie Koszty Uzyskania Przychodu) Option to work on a B2B contract (please note: benefits, bonus and KUP do not apply in this case) Change is HERE. Apply Now! #LI-AK8   #LI-HYBRID Life at HERE in Poland comes with a competitive total rewards package designed to support your health, wellbeing, and performance. This includes a base salary, a Short-Term Incentive (STI) bonus (percentage based on role), a creative tax advantage for eligible positions, private medical care (including dental), life insurance, a meal allowance, vision reimbursement, a remote work allowance (if applicable), access to MyBenefit and Multisport programs, and various wellbeing initiatives. Paid time off, sick leave, and parental leave are provided in accordance with the Polish Labor Code. As part of HERE Technologies employment process, candidates will be required to successfully complete a pre-employment screening process. This offer and any related claims are subject to the successful completion of a pre-employment screening. This will involve employment, education, and criminal verification if applicable. HERE is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, age, gender identity, sexual orientation, marital status, parental status, religion, sex, national origin, disability, veteran status, and other legally protected characteristics. Who are we? HERE Technologies is a location data and technology platform company. We empower our customers to achieve better outcomes – from helping a city manage its infrastructure or a business optimize its assets to guiding drivers to their destination safely. At HERE we take it upon ourselves to be the change we wish to see. We create solutions that fuel innovation, provide opportunity and foster inclusion to improve people’s lives. If you are inspired by an open world and driven to create positive change, join us. Learn more about us on our YouTube Channel. Apply for this job online Email this job to a friend Share on your newsfeed Connect With Us! Not ready to apply? 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🏢 Summary: Senior Backend Developer role focused on building scalable, cloud-native microservices using TypeScript and Node.js in AWS environments. The position involves designing secure backend solutions, developing IAM services, implementing test automation, and deploying distributed systems in a CI/CD setup. Work includes close collaboration within agile teams on modern, serverless architectures. 🗂️ Requirements: Minimum 5 years backend/full stack development experience, Strong experience with TypeScript and NodeJS, Experience with Java or Python, Experience designing microservices and distributed systems, Hands-on experience with AWS serverless services, Experience with automated testing including integration and E2E tests, Experience with CI/CD pipelines, Knowledge of OAuth2, OIDC, JWT, Experience with Infrastructure as Code, Fluent Polish and English 📃 Skills: TypeScript, NodeJS, Java, Python, AWS, Lambda, APIGateway, DynamoDB, EventBridge, S3, SNS, SQS, Microservices, OAuth2, OIDC, JWT, Jest, Postman, Playwright, GitLab, Kubernetes, CDK, Terraform, Serverless, CI/CD 🏢 Description: 🚀 Senior Backend Developer Location: Kraków, Poland Experience: 5+ years Contract: B2B, Full-Time Join the Future of Digital Tech with Kolomolo At Kolomolo , we don’t just follow trends - we set them. As a global supplier of IT services and digital modernization solutions, we help businesses embrace cutting-edge technology to optimize their operations. Now, we are growing and looking for fresh talent to grow with us. Are you proactive, tech-savvy, and eager to build your career in IT? This role could be your perfect fit. About the Role We’re looking for a Senior Backend Developer who enjoys building reliable, scalable, and modern cloud-native applications. In this role, you’ll be responsible for backend feature development, system modernization, test automation, code refactoring, and production deployments. You’ll work on distributed systems and microservice-based architectures while contributing to the design and development of secure and high-performing backend solutions. This role is ideal for someone who combines strong technical expertise with a collaborative mindset and enjoys working in agile, engineering-driven environments. What You’ll Be Doing Develop microservices based on Typescript & NodeJS for core business components. Design and develop company’s internal IAM microservice, preparing for a migration on a new solution. Design and develop cloud native applications based on AWS services like Lambda, API Gateway, DynamoDB and EventBridge. Creating and running automated tests, particularly integration tests and end-to-end tests for the backend layer. Work closely with Architects & SRE to follow security & reliability standards while being  actively involved in architectural discussions. Work with external partners & vendors while developing various integrations. Collaborate with the team and drive it while ensuring high code quality and standards. Be actively involved in designing and developing reliable & secure backend features/functions. Work with continuously delivered (CI/CD), asynchronous and distributed systems Tech stack Runtime: Serverless (Lambda, API Gateway, EventBridge) Backend: NodeJS / Typescript (additional Java or Python) Persistency: DynamoDB, S3, SNS, SQS Architecture: Microservices IAM: oAuth2, OIDC Connect, JWT, OPAL CI/CD: GitLab QA: Playwright/ Postman/ Jest Infrastructure: AWS, Kubernetes, AWS CDK, Terraform What We Are Looking For Min. 5 years of experience as a backend/full stack developer, with recent projects in TypeScript & NodeJS and other backend programming language (preferably Java or Python). Experience in creating and running test automation with holistic approach including system, performance smoke and E2E tests (full testing pyramid) on Jest/Postman/Playwright. Ability to share your knowledge, experiences, and opinions on the forum via technology demos/brainstorming sessions. Willingness to grow and learn with a passion for creating new solutions. Experience in working closely with product and design teams as well as doing pair programming in small, agile, and cross-functional teams. Ability and openness to work in a team, especially within a culture of mutual respect and continuous feedback. Being a Team Player, able to help people to grow and guide decision-making processes. Open minded, communicative and focused on delivering business value . Fluent verbal and written skills in Polish and English. Nice to Have Familiarity with Customer Identity Access Management systems & solutions (CIAM), ideally with proven record in designing and implementing. Experience in Infrastructure as a code especially Terraform/ AWS CDK. Developing & maintaining team’s monitoring dashboards in Grafana stack (Prometheus, Looki). What is in It for You Competitive salary and benefits. Career development opportunities in a growing tech company. Continuous learning culture: mentorship, internal training, and certifications. Flexible, agile work environment (remote, hybrid, or on-site in Kraków). Office perks: great coffee, tea, fresh fruit, snacks, and a fun atmosphere. Flat management structure, where your voice matters. Regular team events and a social, supportive work culture. Independent Contractor. 🌟 Why Join Kolomolo? At Kolomolo , we prioritize innovation, agility, and autonomy. Our teams have the freedom to own their work, share ideas, and make meaningful contributions. Inspired by Scandinavian values , we believe in work-life harmony and creating an inclusive culture where everyone thrives. You will be part of a passionate, skilled, and friendly team that works hard and celebrates together. Here, you can build your career on your own terms, with opportunities to grow, learn, and make a real impact. Our Flat Structure & The Culture of Inclusion At Kolomolo, we break the corporate mold. We offer: Agile Teams & Autonomy : No micromanagement. You’ll own your projects and enjoy the freedom to innovate. Work-Life Harmony : Inspired by Scandinavian values, we prioritize balance and flexibility, where remote work and asynchronous collaboration are in our DNA. Learning & Growth : Continuous learning is at our core. We reward hard work, value smart ideas, and foster an environment of mutual respect and trust. Inclusive Culture : We believe in DEI: diversity, equity and inclusion. We are committed to creating an environment where every individual, regardless of background, identity, or experience feels valued, respected, and empowered to thrive. Join Kolomolo and elevate your career with cutting-edge technology, a supportive team, and a company that truly values your input. Ready for the next step? Apply now and start an exciting journey of growth and innovation with us!

🏢 Summary: Senior Backend Engineer role focused on designing and delivering secure, scalable authentication services within a distributed platform environment. The position involves working across the full software development lifecycle, contributing to architecture, DevOps practices, and production readiness. The engineer will build and maintain Java-based backend systems while supporting high engineering standards and mentoring team members. 🗂️ Requirements: Strong commercial experience in Java, Proven expertise with Spring and Spring Boot, Experience building scalable, secure backend systems in distributed environments, Hands-on experience with OAuth 2.0 and JWT, Experience designing and integrating APIs, Knowledge of clean code, testing, and code reviews, Experience with CI/CD pipelines and cloud-native development, Understanding of authentication and authorisation concepts, Ability to work in Agile and DevOps environments, Fluent English (written and spoken) 📃 Skills: Java, Spring, SpringBoot, OAuth2, JWT, API, CI/CD, DevOps, Agile, Cloud, Authentication, Authorization 🏢 Description: More about this role Everything you need to know. Overview Senior Software Engineer (Java) (Hybrid/Kraków – 1 day per week in the office) We’re Kingfisher, a team made up of over 74,000 passionate people who bring Kingfisher - and all our other brands: Castorama, B&Q, Screwfix, Brico Dépôt and Koçtaş - to life. That’s right, we’re big, but we have ambitions to become even bigger and even better. We want to become the leading home improvement company and grow the largest community of home improvers in the world. And that’s where you come in. At Kingfisher, our customers come from all walks of life, and so do we. We want to ensure that all colleagues, future colleagues, and applicants to Kingfisher are treated equally regardless of age, gender, marital or civil partnership status, colour, ethnic or national origin, culture, religious belief, philosophical belief, political opinion, disability, gender identity, gender expression or sexual orientation. We are open to flexible and agile working. Therefore, we offer colleagues a blend of working from home and our office, located in Kraków. Talk to us about how we can best support you! At Kingfisher, we value the perspectives that any new team members bring, and we want to hear from you. We encourage you to apply for one of our roles, even if you do not feel you meet 100% of the requirements. In return, we offer an inclusive environment, where what you can achieve is limited only by your imagination! We encourage new ideas, actively support experimentation, and strive to build an environment where everyone can be their best self. We offer a competitive benefit package and plenty of opportunities to stretch and grow your career: 20,000 - 28,000 PLN gross per month on an employment contract Private medical healthcare at LUXMED (including dentalcare) for you and your family Medicover sports card (Fit&More package) Life insurance financed by the employer 30-minute lunch break included in the 8-hour working day Work in a highly professional and stimulating atmosphere Training & Buddy programme that will allow you to quickly adapt to your new role Wellbeing programme for employees Co-financing of monthly tickets for the public transport in Krakow Comfortable working environment in the office and the possibility of home office Language courses, accounting courses, access to LinkedIn Learning and the possibility of co-financing studies and certification Employee referral programme What's the job About the role We are looking for a highly motivated and experienced Senior Backend Engineer to join our Software Engineering team. You will be part of a technology hub, working across the full software development lifecycle and contributing to the foundations of new platforms and capabilities. This role sits within a team responsible for authentication (AUTH) services across the group, playing a critical role in enabling secure, scalable, and reliable access to our products. As a Senior Software Engineer, you will work closely with your cross-functional team to design and implement new features and services, while bringing ideas, energy, and technical leadership to the table. If you're looking for an exciting opportunity to step out of your comfort zone and make a real impact building better software, this is the job for you! Responsibilities Design, build, and maintain secure, scalable backend services, taking solutions from concept through to production. Work closely with product, security, and engineering stakeholders to deliver high-value authentication and platform capabilities. Contribute to system and architecture design, participating in code and quality reviews to maintain high engineering standards. Apply DevOps and Agile practices, including automated testing, continuous integration, and frequent, reliable releases. Ensure services are production-ready through strong observability, monitoring, and operational support. Mentor and support other engineers, helping to build a collaborative and high-performing team. Continuously improve software quality and reliability through data-driven iteration, experimentation, and proactive problem-solving. What you'll bring Strong commercial experience in Java, with proven expertise in building production-grade backend systems using Spring / Spring Boot. Extensive experience designing and developing scalable, secure services in complex, distributed environments. Solid understanding of authentication and authorisation concepts, with hands-on experience using OAuth 2.0 and JWT. Experience working with APIs and integrating backend services within a wider platform ecosystem. Strong knowledge of software engineering best practices, including clean code, testing, and code reviews. Familiarity with DevOps and Agile ways of working, including CI/CD pipelines and cloud-native development. Ability to take technical ownership, collaborate effectively with cross-functional teams, and mentor other engineers. Excellent command of English (written and spoken) Rewards & Benefits What we offer. Private Health Care Private medical healthcare at LUXMED (including dental care) for you and your family. Child Insurance InterRisk - insurance for children. Sports Card Medicover sports card (Fit&More package). Courses Language courses, accounting courses, access to LinkedIn Learning and the possibility of co-financing studies and certification. Life Assurance Life insurance at Generali financed by the employer. Bonus Opportunity to earn annual bonus that aligns to work level of role. Parking Parking spaces and LOTOS card. Kingfisher Pension Scheme Co-financing of monthly tickets. Transport Discount Co-financing of monthly tickets for the public transport in Krakow (50% discount).

🏢 Summary: Senior AI Engineer role focused on designing and building AI Agentic systems within complex, production-grade platforms. The position combines hands-on full-stack development (with backend ownership) and architectural leadership to deliver scalable, enterprise-ready LLM-based solutions. The role involves close collaboration with clients and cross-functional teams across the full AI system lifecycle. 🗂️ Requirements: Strong full-stack experience with NodeJS, Strong full-stack experience with TypeScript, Minimum 1 year experience in AI Engineering role, Experience with AI Agentic technologies and architectures, Understanding of RAG and Multi-Agent concepts, Understanding of MCP Servers and LLM-based systems, Hands-on experience with LLM APIs or SDKs, Experience with LangChain or LlamaIndex, Experience with AWS, Azure, or GCP, Experience with CI/CD pipelines and DevOps practices, Experience with REST APIs, Experience with database integration, Senior-level experience in system design and architecture, Ability to design AI-driven systems within enterprise architectures, Fluency in English 📃 Skills: NodeJS, TypeScript, LLM, RAG, LangChain, LlamaIndex, OpenAI, Anthropic, AWS, Azure, GCP, CI/CD, REST, SQL, MCP 🏢 Description: Hi there! 👋🏻 We’re Tooploox 💎 , part of Solvd Inc . We create AI-powered products and services that make a real difference. Our team of nearly 200 specialists - including a 40+ person R&D team with many PhDs - has pioneered AI solutions across industries from healthcare to e-commerce. We’ve published research in top-tier venues like NeurIPS and ICML, while delivering real-world applications that help our clients innovate and scale. Now, as part of Solvd Inc., we’re building on our strengths with even greater global reach and resources - while keeping the creative, human-scale culture that defines us here in Poland. If you want to work on meaningful AI projects, with space to grow and the freedom to innovate, you’ll feel right at home. Feel invited! What you will do: Design and build AI Agentic systems as part of complex, production-grade platforms. Collaborate with cross-functional teams to define architecture and technical direction across the full lifecycle, from early exploration to production. Lead and influence system and architecture discussions while ensuring AI solutions are scalable, reliable, performant, and maintainable in the long term. Act as a trusted technical advisor by challenging assumptions, framing problems clearly, and proposing well-reasoned engineering solutions rather than simply executing tasks. Work hands-on across both backend and frontend, with primary ownership of backend systems. Collaborate confidently in a customer-facing, multi-vendor environment and strengthen our expert positioning through strong technical credibility and clear communication. Experience and skills you need to join us: Strong full-stack experience with NodeJS and TypeScript. At least 1 year of experience in an AI Engineering role . Experience with AI Agentic technologies, architectures, and best practices. Understanding of RAG, Multi-Agent concepts, MCP Servers, and LLM-based systems. Hands-on experience with LLM APIs /SDKs (e.g., OpenAI, Anthropic). Practical experience with orchestration frameworks such as LangChain or LlamaIndex. Experience with cloud platforms (AWS, Azure, or GCP). Familiarity with CI/CD pipelines, DevOps best practices, REST APIs, and database integration. Senior-level software engineering experience with a strong focus on system design and overall architecture. Ability to design AI-driven systems as part of broader enterprise architectures. Strong problem-framing skills and confidence to challenge designs and requirements constructively. Comfort working directly with client engineers and stakeholders in an enterprise, multi-vendor setup. Fluency in English (Polish is a plus). It would be great if you also have: Basic knowledge of machine learning principles. Ability to read and understand Python code. Experience with React. Experience with model fine-tuning, distillation, or LLM evaluation. Experience with Model Context Protocol (MCP). Experience with graph databases or Voice Agent frameworks (e.g. Pipecat). Language-agnostic mindset with comfort across multiple stacks (Java is a strong plus). Experience supporting or mentoring other engineers. What we offer: 🏖️ 26 days of annual service break. 🤒 An additional pool of 14 days per year paid at 80% of your standard rate . 🇬🇧 English lessons once a week or more frequently, depending on your needs. 📚 Access to a curated library of books and e-books, regularly updated based on employee suggestions, plus recurring knowledge-sharing initiatives . 🏡 Flexible hours and the option to work 100% remotely or from one of our offices in Wrocław or Warsaw . 💻 Top-quality equipment – we provide MacBooks, new monitors, noise-cancelling headphones, and any additional gear you may need to work comfortably. 🏥 Group insurance with Warta and private medical care with Enel-Med for just 1 PLN. 🧠 Mental health support – we offer access to a psychologist with fully anonymous consultations if needed. 🏋️‍♂️ Multisport card (we cover most of the cost – your contribution is currently no more than 45 PLN, or less depending on the selected package), access to gyms in our Wrocław and Warsaw offices , and sports initiatives like the annual Bike 2 Work Challenge . 🍕🎮🕺🏻 We host team lunches, webinars, game nights, and social events . We enjoy the occasional barbecue, dance party, time on the terrace, foosball, or PlayStation session.

🏢 Summary: Senior DevOps Engineer responsible for owning and scaling Kubernetes-based hybrid infrastructure supporting a large-scale feed marketing platform. The role focuses on improving reliability, automating CI/CD, strengthening security, and enhancing observability across AWS/GCP and on-prem environments. It is a hands-on position with full infrastructure ownership and close collaboration with development teams. 🗂️ Requirements: Strong Kubernetes administration experience, Experience with Helm and ArgoCD, Hands-on CI/CD pipeline management, Proficiency in Python or Bash scripting, Experience with Prometheus, Grafana, Loki, Alertmanager, OpenTelemetry, Experience with AWS and/or GCP in hybrid environments, Infrastructure as Code using Terraform, Ansible or SaltStack, Experience with DevSecOps tools and secret management, Knowledge of disaster recovery strategies and RTO/RPO, Experience with GitOps workflows 📃 Skills: Kubernetes, Helm, ArgoCD, GitOps, Jenkins, GitHub, GitLab, Python, Bash, Prometheus, Grafana, Loki, Alertmanager, OpenTelemetry, AWS, GCP, Terraform, Ansible, SaltStack, Vault, Docker, CI/CD 🏢 Description: DataFeedWatch · part of Cart.com Senior DevOps Engineer Location Remote (Poland preferred) · EU candidates welcome Contract B2B or UoP Salary 25 000-32 000 PLN net (B2B) / gross (UoP) Team Infrastructure · DevOps Product Manager, 1 Senior DevOps + 3 sysadmins· ABOUT DATAFEEDWATCH DataFeedWatch is a market-leading Feed Marketing platform trusted by 20,000 online shops across 6 continents to advertise on Google, Facebook, Amazon, and hundreds of other shopping channels. Since March 2022 we are part of Cart.com , a fast-growing commerce platform that gives us the scale, resources, and ambition to build something genuinely significant. Our team of nearly 100 people — 15 nationalities — is built on a simple belief: give smart people real ownership and get out of their way. We are a remote-first company that works hard, ships fast, and genuinely likes each other. THE ROLE We are growing our infrastructure capability to match the pace of the business. As Senior DevOps Engineer you will join a lean, experienced team — a DevOps Product Manager, Senior DevOps Engineer, a SysAdmin trio who are a genuine part of the team, and now you. You will take real ownership of the systems that keep 20,000 merchants running, work closely with the DevOps Product Manager on architecture and direction, and partner directly with our development teams — not as a support function, but as a technical co-owner of how we build and ship software. This is a hands-on role. You will spend your time improving reliability, reducing toil, and raising the engineering bar — not managing tickets. If you want a role where the decisions you make on Monday are running in production by Friday, this is it. WHAT YOU WILL OWN Kubernetes clusters — performance tuning, security hardening, observability, and regular upgrades CI/CD pipelines — automating delivery, deployments, rollbacks, and metrics collection across the software lifecycle Monitoring and observability stack — dashboards, alerts, SLO/SLI tracking, and log aggregation Hybrid infrastructure across on-prem and AWS/GCP — full IaC ownership and disaster recovery Security across the full technology stack — image scanning, secret management, policy enforcement, automated patching, and vulnerability remediation Operational toil reduction — scripting and automation that makes the team faster and on-call quieter Collaboration with development teams on deployments, architecture decisions, code reviews, and onboarding new services WHAT YOU BRING Required Kubernetes administration, networking, and autoscaling — Helm, ArgoCD, and GitOps experience strongly preferred Hands-on CI/CD experience — Jenkins, GitHub Actions, or GitLab CI Scripting proficiency in Python or Bash; a software development background is a genuine advantage Prometheus, Grafana, Loki, Alertmanager, and OpenTelemetry — metrics, tracing, log aggregation, and alerting pipelines AWS and/or GCP experience in hybrid cloud and on-prem environments with IaC tools — Terraform, Ansible, or SaltStack DevSecOps tooling — Vault, AWS Secrets Manager, container scanning, and policy-as-code Disaster recovery fundamentals — backup strategies, RTO/RPO definitions Ownership mindset — you diagnose and solve problems independently; you do not wait to be directed Strong communication skills and the ability to work effectively with non-engineering stakeholders Comfort using AI tools as a natural part of daily engineering work Nice to have Ruby scripting experience Experience in e-commerce, ad tech, or feed management platforms Prior work in a scale-up or fast-growth environment where infrastructure evolves quickly WHAT SUCCESS LOOKS LIKE At 3 months — you understand the full infrastructure landscape, have identified the top 3 reliability or toil risks, and have shipped at least one meaningful improvement. At 6 months — CI/CD pipelines are measurably more stable, observability coverage has improved, and development teams notice the difference. At 12 months — you are a trusted technical co-owner of infrastructure decisions, on-call burden has decreased, and the team's delivery velocity is higher because of your contributions. WHY JOIN US Impact — play a key role in scaling infrastructure that powers 20,000 merchants across 6 continents Ownership — real technical autonomy; you will make architecture decisions, not just implement them Growth — we invest in people who want to go deep, not just up; expand your skills, your product understanding, and your influence in a team that keeps the right people for the long term Culture — a collaborative, no-nonsense team of 15 nationalities that values people who make their own decisions Remote-first — flexible hours and async-friendly culture; we care about output, not hours online Perks — competitive salary, health insurance, lunch card, and a comprehensive benefits package HIRING PROCESS We run a structured, respectful process designed to be efficient for both sides. Expect 3–4 stages over 2–3 weeks: Screening call with our Recruiter (30 min) WHO interview — career deep-dive with your future line manager and a technical peer (90 min) Technical interview — system design and a practical infrastructure exercise (60 min) Reference checks and offer We move fast on people we are excited about. If that is you, you will know quickly.

🏢 Summary: Senior Software Engineer role focused on designing and building AI-powered backend systems that automate healthcare operations while supporting human workflows. The position involves hands-on system architecture, workflow orchestration, distributed systems, and AI process automation in a regulated environment. Remote-first work with required overlap with US Central Time. 🗂️ Requirements: 6+ years of experience building and maintaining production software systems, Strong experience designing and owning complex backend systems, Strong backend engineering skills, Experience with asynchronous, event-driven, or workflow-based distributed systems, Ability to work with 4–5 hour daily overlap with US team, Experience with AI or LLM-based systems and process automation, Strong spoken and written English communication skills, Ability to solve unclear problems with incomplete information, Self-motivated with strong ownership and responsibility 📃 Skills: TypeScript, Node.js, AI, LLM, Claude, Backend, APIs, HIPAA 🏢 Description: Please Note: Overlap with Central US Time required (until 20-21:00 CEST) We are a health technology company that helps older people and their families apply for important eldercare benefits, including Medicaid, Medicare, and VA programs. We work with healthcare, government systems, and people’s daily lives, so accuracy, reliability, and trust are very important. As the number of patients grows from hundreds to thousands, manual work is no longer enough. We are building AI-powered systems to automate routine tasks while keeping people involved for quality checks, difficult cases, and patient safety. Our goal is to make healthcare operations more scalable without losing the human connection. The Role We are looking for a Senior Software Engineer to lead the design and development of systems that combine AI automation with human workflows. This is an important role close to the core business. It is a fully hands-on position with no management duties or direct reports. You will not only build features, but also design systems, define best practices, and guide technical decisions as we grow. You should feel comfortable solving unclear problems, working closely with operations and product teams, and making smart decisions in a regulated environment. This role is a good fit for someone who enjoys system design, building reliable infrastructure, and taking ownership of their work. What You’ll Work On Designing workflow and orchestration systems for complex operations. Creating AI automations that handle routine tasks safely and send difficult cases to humans. Building systems where AI supports human work before, during, and after tasks. Managing long-running workflows that can last days or weeks. Connecting with external systems such as EVV platforms, insurers, government portals, and older messaging tools. Designing confidence scoring, auditing, and rollback systems for AI processes. Improving system reliability, monitoring, and error handling in production. Responsibilities Lead the technical design and development of scalable backend systems. Make and document architecture decisions with clear trade-offs. Create patterns for collaboration between AI systems and human workers. Work closely with operations teams to understand real-world issues and edge cases. Make sure systems are observable, auditable, and safe to run at scale. Identify technical risks early and suggest solutions. Maintain high standards for code quality, testing, and system design. Share knowledge and help improve the team’s technical standards through reviews and collaboration. What We’re Looking For Required 6+ years of experience building and maintaining production software systems. Strong experience designing and owning complex backend systems. Strong backend engineering skills (we use TypeScript and Node.js, but other languages are welcome). Experience with asynchronous, event-driven, or workflow-based distributed systems. Ability to work with a daily 4–5 hour overlap with the US team (until 20:00 or 21:00 Polish time). Comfortable working with unclear problems and incomplete information. Strong spoken and written English communication skills. Self-motivated with a strong sense of ownership and responsibility. Experience working with AI or LLM-based systems and process automation, such as using Anthropic’s API (Claude) or similar tools in business workflows. Nice to Have Experience in healthtech or other regulated industries. Knowledge of HIPAA and healthcare data privacy and security rules. Experience building systems with strict compliance or audit requirements. Experience with human review workflows. Experience integrating with unstable or legacy third-party APIs. Master’s or PhD in Computer Science, Engineering, or a related field. How We Work Remote-first company. Small, experienced teams with high trust and independence. Strong focus on system accuracy, reliability, and long-term maintenance. Practical and thoughtful use of AI, both for internal development and within our product. Direct connection to real users and operational impact.