Senior Full Stack Engineer - Ruby on Rails

🏢 Summary: Full-Stack Developer (Ruby on Rails) role within an R&D team building advanced life science research platforms. The position involves designing and delivering scalable, secure web solutions across frontend and backend, contributing to architecture and product direction. The engineer will work in an agile environment to enhance a multi-tenant SaaS platform used globally by researchers. 🗂️ Requirements: Minimum 3 years of professional web development experience, Strong hands-on experience with Ruby on Rails, Solid backend and frontend development knowledge, Experience with HTML, CSS, and JavaScript, Experience building and maintaining APIs, Experience with AWS and CI/CD pipelines, Proficiency with Git, Experience with AI-assisted development tools, Ability to develop scalable and secure applications 📃 Skills: Ruby, Rails, HTML, CSS, JavaScript, Hotwire, React, AWS, CI/CD, Git, Docker, MySQL, Elasticsearch, APIs 🏢 Description: For one of our clients, we are currently seeking an experienced Full‑Stack Developer (Ruby on Rails) to join an R&D team building advanced platforms for life science research. This role is ideal for an engineer who values clean architecture, high‑quality code, and modern web development practices. You will become part of an agile, highly motivated engineering team responsible for building and evolving a platform used daily by researchers and laboratories worldwide. As an experienced engineer, you will play a meaningful role in shaping the technical direction of the product and driving future platform improvements. Working closely with product leaders and management, you will ensure that our solutions continue to meet the needs of a growing scientific community. What You Will Do Design, implement, and ship new features as well as future releases of the platform across frontend and backend layers. Build, improve, and maintain robust platform APIs with a strong focus on scalability, reliability, and performance. Write clear, maintainable, and well‑tested code, following iterative and test‑driven development principles. Collaborate closely with product and management teams to transform business requirements into effective technical solutions. Help develop a highly scalable service deployed in multi‑tenant SaaS, single‑tenant SaaS, and on‑premise environments. Apply secure development practices and contribute to system scalability and performance optimization. Actively use AI‑assisted development tools to speed up coding, reviews, and testing workflows. Contribute positively to team collaboration, sharing ownership and fostering a supportive and enjoyable work culture. Experience & Technical Requirements Required: Minimum of 3 years of professional experience in web development, with solid knowledge of both backend and frontend development. Required: Strong, hands‑on experience with Ruby on Rails . Experience with several of the following technologies: HTML, CSS, JavaScript, Hotwire, React, AWS, CI/CD pipelines, Git . Experience with Docker is considered an advantage. Experience with MySQL is a plus. Experience with Elasticsearch is a plus. Hands‑on use of AI‑powered tools to accelerate development (e.g. AI‑assisted coding, automated code reviews, or testing). Experience integrating AI workflows into the software development lifecycle is considered a nice‑to‑have. Who You Are A collaborative team member who raises the technical bar and encourages excellence in others. Comfortable explaining ideas, designs, and decisions to both technical and non‑technical stakeholders. Able to thrive in a fast‑paced, agile environment where results are delivered in short cycles. Opinionated about technology choices and how to apply them effectively to deliver real value to users and the business. A pragmatic yet passionate polyglot programmer with a strong software engineering foundation. Open to experimenting with and adopting AI tools as part of everyday development work. Willing to work from the office at least two days per week, with flexibility to work remotely when needed. A background or degree in Life Sciences is a significant advantage. Hays Poland sp. z o.o. jest agencją zatrudnienia zarejestrowaną w rejestrze prowadzonym przez Marszałka Województwa Mazowieckiego pod numerem 361.

🏢 Summary: Senior Full-Stack Engineer role focused on building scalable ASP.NET/C# microservices and React/TypeScript interfaces, with a 60/40 frontend-to-backend split. The position offers technical ownership, mentoring opportunities, and a potential path to Tech Lead while working hybrid from Poland under an employment contract. 🗂️ Requirements: Poland residency, MSc in Computer Science or equivalent, 5+ years building secure REST APIs with ASP.NET, 5+ years developing frontend applications with React, Microservices architecture expertise, Cloud design-pattern knowledge, Technical ownership, Technical leadership, English B2 fluency 📃 Skills: ASP.NET, C#, React, TypeScript, REST, Microservices, Cloud, AWS, Agile, DDD 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to the product development team. You will work with a modern microservices architecture, building scalable backend services using ASP.NET Web API with C#, and intuitive frontend interfaces mainly with React and TypeScript. This is a hands-on engineering role with a 60/40 frontend-to-backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. The role could develop into a Tech Lead position in the foreseeable future. Applicants must be located in Poland; the team meets in Poland for at least one week each quarter. The contract form is Umowa o Pracę only; B2B is not available. Quick Facts • Hands-on full-stack role with a 60/40 frontend-to-backend focus • Cloud-native, microservices-based product environment • Remote flexibility with quarterly in-person collaboration in Poland • Potential progression to Tech Lead • Employment through an Employer of Record provider, ensuring legal compliance in Poland Responsibilities • Collaborate proactively in refinement sessions with product and technical teams to ensure feature clarity and feasibility. • Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. • Develop responsive user interfaces with React and TypeScript to improve usability and performance. • Work closely with Product Owners to clarify feature requirements and understand business context. • Define, design, and align feature architecture with the Head of Engineering to ensure consistency and scalability. • Ensure features meet the Definition of Done with unit, integration, and end-to-end test coverage. • Support incident response and production issue resolution according to team standards. • Share knowledge actively and coach colleagues in technical best practices. Essential Qualifications • MSc or higher in Computer Science, or equivalent. • At least 5 years of proven experience building secure REST APIs using ASP.NET. • At least 5 years of experience developing solid frontend applications with React. • Comprehensive knowledge of contemporary web application architectures, particularly microservices and cloud design patterns. • Demonstrated technical ownership and technical leadership. • English at B2 level or higher, with fluent communication; no certificate required. Preferred Qualifications • Hands-on experience with AWS infrastructure. • Experience in cross-functional product teams using Agile practices and Domain-Driven Design (DDD). • Polish and German language skills. What You Can Expect • A dynamic, ambitious team where contributions and ideas matter. • Ownership over decisions in a trusted, cross-functional environment. • Fair compensation, flexible working hours, and a hybrid work setup. • Support for personal and professional growth and a healthy work-life balance. Candidates may be asked to verify their identity before speaking with a recruiter to support a fair and secure hiring process.

🏢 Summary: Full Stack Developer (Ruby on Rails) role in an R&D team building a scalable SaaS platform for laboratory data management and AI-powered research tools. The position focuses on developing and maintaining full-stack features with strong emphasis on performance, scalability, and code quality. You will work on multi-tenant and on-premise deployments in a collaborative, agile environment. 🗂️ Requirements: 3+ years frontend development experience in large-scale web applications, Strong proficiency in React, Strong proficiency in JavaScript, Strong proficiency in HTML, Strong proficiency in CSS, Practical experience with Ruby on Rails and ability to work with existing codebases, Degree in Computer Science or equivalent experience 📃 Skills: React, JavaScript, HTML, CSS, Ruby, Rails, TDD, APIs, SaaS, AWS, Docker, MySQL, ElasticSearch, Redux, Lit, CICD, AI 🏢 Description: 📍 Location: Wrocław, Poland (Hybrid) 📅 Employment Type: Full-time, B2B (up to 18.000PLN net monthly)/CoE (up to 14.000PLN gross monthly) 🏢 We are hiring for our client (life sciences / SaaS R&D domain) About the Project We are currently looking for an experienced Full Stack Developer (Ruby on Rails) on behalf of our client — an innovative company operating in the life sciences sector. You will join an R&D team working on a cutting-edge platform used by scientists and research organizations worldwide. The platform focuses on laboratory data management, workflow automation, and AI-powered tools that support research and production processes. Responsibilities Design and implement new features across the full stack Develop and maintain platform APIs with a strong focus on scalability, reliability, and performance Write clean, well-tested, and maintainable code following TDD and iterative practices Collaborate closely with product and business teams to translate requirements into technical solutions Contribute to building scalable solutions deployed as: multi-tenant SaaS single-tenant SaaS on-premise systems Ensure application security, performance optimization, and system scalability Leverage AI-assisted tools to accelerate development, testing, and code quality Actively contribute to team collaboration and a positive engineering culture Requirements ✅ Must-have At least 3 years of frontend development experience in large-scale web applications Strong proficiency with: React JavaScript HTML / CSS Practical familiarity with Ruby on Rails (ability to read and contribute to existing codebases) Degree in Computer Science or equivalent experience ✅ Nice to have Experience with: Redux Toolkit / Lit AWS / CI/CD pipelines Docker MySQL ElasticSearch Experience using AI tools in development (e.g., coding assistants, automated testing, code review) Exposure to integrating AI workflows into the SDLC Candidate Profile Strong team player with excellent communication skills (technical and non-technical) Comfortable working in a fast-paced, agile environment Opinionated about code quality and technology usage, while remaining pragmatic Passionate about building meaningful products Open to adopting AI tools as part of daily development workflows Hays Poland sp. z o.o. jest agencją zatrudnienia zarejestrowaną w rejestrze prowadzonym przez Marszałka Województwa Mazowieckiego pod numerem 361.

🏢 Summary: Full Stack Developer (Ruby on Rails) role in an R&D team building a scalable laboratory data management and AI-powered SaaS platform for the life sciences sector. The position involves developing and maintaining full-stack features, APIs, and scalable deployments across multi-tenant, single-tenant, and on-premise environments. The focus is on high-quality, secure, and performant web applications developed using TDD and modern engineering practices. 🗂️ Requirements: Minimum 3 years frontend development experience in large-scale web applications, Strong proficiency in React, Strong proficiency in JavaScript, Strong proficiency in HTML, Strong proficiency in CSS, Practical experience with Ruby on Rails, Ability to develop and maintain APIs, Experience writing tested and maintainable code (TDD), Degree in Computer Science or equivalent experience 📃 Skills: React, JavaScript, HTML, CSS, Ruby, Rails, API, TDD, SaaS, AWS, Docker, MySQL, ElasticSearch, CI/CD, Redux, Lit 🏢 Description: 📍 Location: Wrocław, Poland (Hybrid) 📅 Employment Type: Full-time, B2B (up to 18.000PLN net monthly)/CoE (up to 14.000PLN gross monthly) 🏢 We are hiring for our client (life sciences / SaaS R&D domain) About the Project We are currently looking for an experienced Full Stack Developer (Ruby on Rails) on behalf of our client — an innovative company operating in the life sciences sector. You will join an R&D team working on a cutting-edge platform used by scientists and research organizations worldwide. The platform focuses on laboratory data management, workflow automation, and AI-powered tools that support research and production processes. Responsibilities Design and implement new features across the full stack Develop and maintain platform APIs with a strong focus on scalability, reliability, and performance Write clean, well-tested, and maintainable code following TDD and iterative practices Collaborate closely with product and business teams to translate requirements into technical solutions Contribute to building scalable solutions deployed as: multi-tenant SaaS single-tenant SaaS on-premise systems Ensure application security, performance optimization, and system scalability Leverage AI-assisted tools to accelerate development, testing, and code quality Actively contribute to team collaboration and a positive engineering culture Requirements ✅ Must-have At least 3 years of frontend development experience in large-scale web applications Strong proficiency with: React JavaScript HTML / CSS Practical familiarity with Ruby on Rails (ability to read and contribute to existing codebases) Degree in Computer Science or equivalent experience ✅ Nice to have Experience with: Redux Toolkit / Lit AWS / CI/CD pipelines Docker MySQL ElasticSearch Experience using AI tools in development (e.g., coding assistants, automated testing, code review) Exposure to integrating AI workflows into the SDLC Candidate Profile Strong team player with excellent communication skills (technical and non-technical) Comfortable working in a fast-paced, agile environment Opinionated about code quality and technology usage, while remaining pragmatic Passionate about building meaningful products Open to adopting AI tools as part of daily development workflows Hays Poland sp. z o.o. jest agencją zatrudnienia zarejestrowaną w rejestrze prowadzonym przez Marszałka Województwa Mazowieckiego pod numerem 361.

🏢 Summary: Senior Full Stack Engineer role focused on building and scaling core platform functionalities within a cross-functional product team. The position involves end-to-end ownership of features, from design to deployment, using a modern TypeScript-based stack on AWS. The engineer will develop scalable microservices and frontend components that support millions of global users. 🗂️ Requirements: 7+ years of professional software engineering experience, Strong hands-on experience with TypeScript, Node.js, and React, Proven experience with AWS services: API Gateway, Lambda, ECS, SQS, SNS, Experience designing event-driven and microservices architectures, Proficiency with NoSQL and relational databases, Experience with CI/CD pipelines and Docker, Experience with observability and monitoring tools 📃 Skills: TypeScript, Node.js, React, AWS, APIGateway, Lambda, ECS, SQS, SNS, MongoDB, DynamoDB, PostgreSQL, Jenkins, GitLabCI, GitHubActions, Docker, CloudWatch, Datadog, REST, Microservices, NoSQL, CICD 🏢 Description: Salary range: B2B - up to 43 E/h + VAT 💰 Ciklum is looking for a Senior Full Stack Engineer to join our team and work directly with our partner, Trustpilot, in Poland. We are a custom product engineering company that supports both multinational organizations and scaling startups to solve their most complex business challenges. With a global team of over 4,000 highly skilled developers, consultants, analysts and product owners, we engineer technology that redefines industries and shapes the way people live. About the client: Trustpilot is on an incredible journey to become the universal symbol of trust. As the world’s largest independent consumer review platform, they bring consumers and businesses together to foster transparency and improvement. With over 300 million reviews and 64 million monthly active users, the work we do together has a massive global impact, helping millions of people make better choices every day. About the role: As a Senior Full Stack Engineer, become a part of a cross-functional development team engineering experiences of tomorrow. As the world’s largest independent consumer review platform, they bring consumers and businesses together to foster transparency and improvement. With over 300 million reviews and 64 million monthly active users, the work we do together has a massive global impact, helping millions of people make better choices every day. In this role - you are fully integrated into feature teams. You will work on core platform functionalities that drive product-led growth, managing the critical customer lifecycle including sign-up, onboarding, sales, and retention. Your work will influence the experience of over 60 million monthly Trustpilot users globally! You will join a cross-functional "full ownership" team where you have a say in the direction of projects and technological choices. Responsibilities: Collaborative Development: Work alongside Product, Design, and Data Science in a team that owns its product and codebase from end-to-end End-to-End Ownership: Participate in every stage of the lifecycle—from ideation and design to architecture, implementation, deployment, and maintenance System Design: Drive technical decision-making and build scalable backend services and clean, reusable frontend components using TypeScript Scale & Innovation: Build and maintain RESTful APIs and distributed cloud services within an event-driven microservices architecture Team Leadership: Support and inspire your colleagues with your technical expertise and a problem-solving mindset Requirements: Experience: 7+ years of professional experience in software engineering Core Tech: Strong, hands-on expertise with TypeScript, Node.js, and React AWS Infrastructure: Proven experience with API Gateway, Lambda, ECS, SQS, SNS Architecture: Deep understanding of event-driven and microservice architectures Databases: Proficiency with NoSQL (MongoDB, DynamoDB) and Relational databases (PostgreSQL) DevOps & Tooling: Experience with CI/CD (Jenkins, GitLab CI, GitHub Actions), Docker, and observability tools like CloudWatch or Datadog What`s in it for you? Remote Collaboration: Enjoy the flexibility of remote work or join us in our offices across Europe Human Connection: We value a great atmosphere and host team F2F workshops a few times a year to brainstorm and bond in person Continuous Growth: Benefit from a tailored education path, including internal meetups, a Udemy license, and company-paid certifications Comprehensive Care: We offer medical insurance, mental health programs, and a welcoming, open culture Global Reach: Your work will build solutions used by millions to promote trust and transparency online Be bold, not bored! If you're ready to build the heart of trust with a world-class engineering team, we’d love to see your application.

🏢 Summary: Senior Full-Stack Engineer role with a 50/50 backend and frontend focus, building scalable microservices-based applications using ASP.NET (C#) and React with TypeScript in a cloud-native environment. The position involves designing and maintaining REST APIs, developing responsive user interfaces, ensuring high test coverage, and contributing to architectural decisions with strong technical ownership. Poland-based employment (Umowa o Pracę) with remote flexibility and quarterly in-person collaboration. 🗂️ Requirements: MSc+ in Computer Science or equivalent, Minimum 5 years experience with ASP.NET and C#, Minimum 5 years experience building REST APIs, Minimum 5 years experience with React, Experience with TypeScript, Strong knowledge of microservices architecture, Knowledge of cloud design patterns, Experience with unit, integration, and end-to-end testing, High level of technical ownership, Fluent English (minimum B2), Poland residency 📃 Skills: ASP.NET, C#, REST, React, TypeScript, Microservices, AWS, Agile, DDD, UnitTesting, IntegrationTesting, E2ETesting, Cloud 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to our product development team. You will work with a modern microservices architecture, building scalable backend services using the ASP.NET Web API with C#, and intuitive frontend interfaces using mainly React and TypeScript. This is a hands-on engineering role with a 50/50 front-/backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. This role could easily become a Tech Lead role in a foreseeable future. If you're passionate about designing high-impact software in a cloud-native environment, we’d love to hear from you. This Poland-based role offers remote flexibility, but we value in-person collaboration. Our team meets in Poland for at least one week each quarter, so we request all applicants to be located in Poland. This is not a globally remote role. Poland residency is required. The contract form is Umowa o Pracę (only, no B2B). What you will be responsible for Collaborate proactively in refinement sessions with product and tech teams to ensure clarity and feasibility of features. Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. Develop responsive user interfaces with React and TypeScript that enhance usability and performance. Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Define, design and align feature architecture with the Head of Engineering to ensure consistency and scalability. Ensure features meet Definition of Done, with state-of-the-art unit, integration, and end-to-end test coverage. Support incident response and production issue resolution as per team standards. Actively contribute to team knowledge sharing and coach colleagues in technical best practices. What makes you a match Essential Qualifications: MSc+ in Computer Science or equivalent 5 years of proven experience in building secure REST APIs using ASP.NET , as well as developing solid front-end applications with React are non-negotiable must haves. Comprehensive knowledge of contemporary web application architectures, with a focus on microservices and cloud design patterns. Demonstrated ability of high technical Ownership and Tech Leadership are a requirement for this role. Bonus Skills: Hands-on experience with AWS infrastructure. Experience working in cross-functional product teams using Agile practices and following Domain-Driven Design (DDD). Collaboration and Interpersonal Skills: Clear and adaptive communication with both technical and non-technical stakeholders. Strong sense of ownership, accountability, and proactive problem-solving. Languages: English: B2 - (No certificate required, but Fluency) German, Polish, Ukrainian: desired, not required What you can expect A dynamic, ambitious team where your voice is heard, and your contributions truly matter. You’ll have real ownership over your decisions in a trusted, cross-functional environment within a Swiss product company that puts people first. We offer fair compensation, flexible working hours, a hybrid work setup, and a culture that supports both personal and professional growth, fostering a healthy work-life balance. Employer of Record: For this role, we offer employment through our trusted Employer of Record provider Remote.com , ensuring full legal compliance and a seamless experience for our team members in Poland. ID Verification: To maintain a fair and secure hiring process, candidates may be asked to verify their identity their identity before speaking with our Recruiter. This step helps us prevent fraud and focus our resources on genuine applicants. About us Who we are esurance is a Swiss InsurTech offering a SaaS platform that connects SMEs, insurance providers, brokers, and business application providers. Founded in 2013, we're on a mission to make health insurance for small businesses truly hassle-free. What makes us unique You'll be part of a connected, forward-thinking team built on trust, openness, and mutual respect — working hybrid from Zürich or remotely across Europe. We invest in your growth through agile practices, real ownership, and a transparent Grading System that ensures fair pay and clear career paths. Our core values We are connected. We are ahead. We are clear. We are approachable. Do these resonate with you? → Come join us. Our Recruitment Process & Principles We keep our process transparent and respect your time: Application Review — You hear from us within 5 business days. Always. Recruiter Screen — A relaxed Get2Know call to explore mutual fit. Four Interviews — Two Role Knowledge interviews (peer + supervisor), one Culture Match, one Leadership conversation. Batched into two days wherever possible. Hiring Decision — Thoughtful, timely. You'll know within 1–2 weeks. Use of Artificial Intelligence (AI) We use AI to increase productivity and you're welcome to use it to polish your CV or Coverletter. Interviews and assessments should reflect your genuine self, though. Recruiting Agencies: We don't work with unsolicited agency submissions. Thanks for respecting this.

🏢 Summary: Remote Full-Stack Software Engineer role focused on designing, building, and maintaining scalable web applications using modern backend and frontend technologies. The position involves end-to-end feature ownership, customer collaboration, and development of secure, high-performance systems. The engineer will work with Python, FastAPI, React, and cloud-native tools in a distributed team. 🗂️ Requirements: Approximately 5 years of professional software development experience, Strong backend development experience with Python and FastAPI, Experience with NGINX, Strong frontend development skills with React and TypeScript, Experience with Vite, Experience with MSSQL, Experience with SQLAlchemy, Hands-on experience with Docker, Hands-on experience with Kubernetes, Experience designing and consuming REST APIs, Experience with relational databases, Ability to design secure, scalable systems, Fluent English communication skills, EU citizenship, Residence in Poland 📃 Skills: Python, FastAPI, NGINX, React, TypeScript, Vite, MSSQL, SQLAlchemy, Docker, Kubernetes, REST, SQL, CI/CD, Cloud 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. We are seeking a highly experienced Full-Stack Software Engineer to join a remote development team. The role focuses on designing, building, and maintaining scalable web applications using modern backend and frontend technologies. The ideal candidate is autonomous, proactive, and comfortable working directly with customers to translate business needs into robust technical solutions. Project information: Type of project: IT Services Office location: Poland Work mode: Remote Budget: 140-160 PLN net /h - b2b Only candidates with citizenship in the European Union and residence in Poland Start date: ASAP (depending on candidate availability) Project scope: Design, develop, and maintain backend services and REST APIs using Python and FastAPI Build modern, responsive frontend applications using React, TypeScript, and Vite Own features end-to-end, from backend logic to frontend user interfaces Collaborate directly with customers and stakeholders to gather requirements and provide technical guidance Design and optimize database schemas and queries using MSSQL and SQLAlchemy Deploy, operate, and maintain applications using Docker and Kubernetes Ensure best practices in security, performance, scalability, and maintainability Participate in architecture discussions and contribute to technical decision-making Troubleshoot production issues and provide reliable operational support Work closely with product, design, and engineering teams to deliver high-quality solutions on time Requirements: Approximately 5 years of professional software development experience Strong autonomy and ability to manage tasks with minimal supervision Proven experience in customer-facing or stakeholder-facing roles Solid backend development experience with Python, FastAPI, and NGINX Strong frontend development skills with React, TypeScript, and Vite Experience working with relational databases, particularly MSSQL, and ORM tools like SQL Alchemy Hands-on experience with containerization and orchestration tools such as Docker and Kubernetes Understanding of secure, scalable, and maintainable system design Experience in cloud environments (optional) Knowledge of CI/CD pipelines and DevOps best practices (optional) Experience working in agile or product-driven teams (optional) Strong verbal and written communication skills in English Self-driven, accountable, and results-oriented Comfortable working directly with customers and taking ownership of delivered solutions Team-oriented mindset with a proactive approach to problem-solving We offer: Remote working model Full-time job agreement based on b2b contract Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible Multisport card (also for an accompanying person) Life insurance

🏢 Summary: Senior Full-stack Engineer role focused on building and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.

🏢 Summary: Senior Full Stack Engineer role in a healthcare SaaS environment focused on building and scaling a cloud-based platform for medical practices. The position involves leading end-to-end feature development, driving architecture decisions, mentoring engineers, and contributing to secure, scalable product delivery in a fully remote EU team. The role includes collaboration across product and design teams, with strong emphasis on quality, testing, and CI/CD practices. 🗂️ Requirements: 6+ years of professional engineering experience, 2+ years in a senior engineering role, Experience with Symfony, Experience with Doctrine ORM, Knowledge of Symfony Security and Event Dispatchers, Experience with Domain-Driven Design, Ability to write and maintain unit and integration tests, Experience with React.js, Strong MySQL experience, Experience with Docker, Familiarity with GitLab CI/CD, Understanding of frontend and backend security, Strong problem-solving skills, Clear communication skills 📃 Skills: Symfony, Doctrine, DDD, React, MySQL, Docker, GitLab, CI/CD, PHP, Security 🏢 Description: About the Role A healthcare SaaS company is looking for a Senior Full Stack Engineer to join their core product team. Their cloud-based platform transforms the daily operations of medical practices - streamlining practice management and patient relationships across thousands of healthcare providers. This is a high-ownership role. You'll lead end-to-end feature development, drive architecture decisions, and mentor junior engineers - all in a fully remote, cross-functional team that ships fast and takes quality seriously. What You'll Do Lead full stack feature development from concept to deployment, with a strong focus on security and scalability Drive architecture and design decisions to ensure solutions meet healthcare industry standards Collaborate with product managers, designers, and stakeholders to align technical solutions with business goals Mentor junior developers, promoting continuous learning and innovation within the team Implement automated testing, continuous integration, and continuous deployment to uphold code quality Contribute to roadmap planning with insights on technical feasibility, timelines, and resources Stay up-to-date with industry trends and apply new knowledge to enhance the product What We're Looking For 6+ years of professional experience, with at least 2 years in a senior engineering role Extensive experience with Symfony , including Doctrine ORM and key components (Security, Event Dispatchers) Advanced understanding and practical experience with Domain-Driven Design (DDD) Proficient in writing and maintaining unit and integration tests Solid understanding of React.js , with the ability to improve frontend as needed Strong experience with MySQL - design, optimisation, and management Experience with Docker for managing development environments Familiarity with GitLab CI/CD pipelines for automated build, test, and deployment Security awareness for frontend and backend development, particularly when handling sensitive data Strong problem-solving skills and clear communication across technical and non-technical stakeholders Nice to Have Experience with SaaS products and/or the healthcare industry Working Model Fully remote (EU) Full-time: Monday-Friday, 09:00-18:00 with 1-hour lunch break 1-week onboarding at the Munich HQ to meet the team Benefits Full equipment provided (laptop, headphones, keyboard, mouse, smartphone with unlimited data, monitor) Bonus for paid English or German language courses Training courses, books, workshops, and team-building activities Partnership with an online psychotherapy platform - three sessions provided if needed Regular company meetups and a yearly Christmas dinner

🏢 Summary: Senior Full-Stack Engineer role focused on designing and building scalable APIs and microservices that power music-related experiences across a global fitness platform. The position combines backend development in .NET with frontend collaboration in React/Vue, working on distributed systems and real-time features. It involves strong ownership, architectural influence, and delivering high-impact user-facing solutions at scale. 🗂️ Requirements: 5+ years of professional software development experience, Strong knowledge of C#, Strong knowledge of .NET ecosystem, Experience building and maintaining RESTful APIs, Understanding of asynchronous programming, Experience with multithreading, Experience with NoSQL databases, Experience with MongoDB, Familiarity with microservices architecture, Working knowledge of React or Vue.js, Experience with CI/CD pipelines, Experience with automated testing, Understanding of DevOps principles, Understanding of Agile methodologies, Strong focus on code quality and scalability, Professional English communication skills 📃 Skills: C#, .NET, REST, React, Vue, MongoDB, AWS, S3, SQS, Lambda, Microservices, CI/CD, Docker, Kubernetes, RabbitMQ, NServiceBus 🏢 Description: We are hiring on behalf of our client, a global innovator in fitness and wellness technology. Their mission is to empower people to live fit, strong, long, and happy lives by delivering integrated experiences to millions of members anytime, anywhere. We are looking for a Senior Full-Stack Engineer (.NET & React) to join the Content Platform team, focused on building systems that power music-related experiences across the product ecosystem. In this role, you will design and develop APIs and backend services that support everything from instructor class planning to real-time music playback during workouts. This is a hands-on engineering role with strong ownership, where you will work on distributed systems, collaborate across teams, and directly impact user-facing features at scale. Key takeaways: Stack : C#, .NET, REST APIs, React/Vue, MongoDB, AWS (S3, SQS, Lambda), microservices Salary : 23 000 PLN - 28 000 PLN gross on the Contract of Employment Working model : Hybrid - 3 days/week from the office Location : ul. Grzybowska 60, Warsaw Recruitment process : A call with MOTIFE Recruiter Panel interviews with the team (coding, architecture, and cross-collaboration interviews, Hiring Manager meeting) Responsibilities: Backend Development & Architecture Design, build, and maintain scalable APIs and microservices supporting content and music-related features Develop systems for managing music catalogs, class planning tools, and platform integrations Ensure high performance, reliability, and scalability of backend services Technical Excellence Write clean, maintainable, and well-tested code with a focus on long-term sustainability Drive best engineering practices, including CI/CD, automated testing, logging, and monitoring Continuously improve system architecture while avoiding unnecessary complexity Collaboration & Delivery Partner closely with Product, Design, and QA to deliver high-quality features Actively participate in architecture discussions, code reviews, and technical planning Translate UI/UX requirements into reliable backend solutions Engineering Culture Contribute to a culture of code quality, ownership, and continuous improvement Promote practices such as refactoring, pair programming, and iterative development Support knowledge sharing and help evolve engineering standards across the team Requirements: Technical Expertise 5+ years of professional software development experience Strong knowledge of C# and .NET ecosystem Experience building and maintaining RESTful APIs Solid understanding of asynchronous programming and multi-threading Experience with NoSQL databases (e.g., MongoDB) Familiarity with microservices architecture Frontend & Platform Awareness Working knowledge of React, Vue.js, or similar frontend frameworks Understanding of system integration and API-driven development Engineering Practices Experience with CI/CD pipelines, automated testing, and DevOps principles Understanding of Agile and Lean development methodologies Strong focus on code quality, maintainability, and scalability Collaboration & Mindset Strong communication skills in English Ability to work effectively in cross-functional teams Comfortable working in fast-paced, evolving environments Nice to Have Experience with Docker and Kubernetes Familiarity with AWS services (S3, SQS, Lambda) Experience with messaging systems (e.g., NServiceBus, RabbitMQ) What we offer: 100% paid medical care Multisport Creative tax (KUP) Home office allowance MacBook Pro