Senior Full-stack Engineer

🏢 Summary: Product Engineer role focused on building the next iteration of a scalable, developer-centric subscription platform at the intersection of ecommerce and payments. The position involves solving complex UI challenges, shaping product priorities with cross-functional teams, and delivering high-quality, production-ready features in a lean startup environment. The role combines strong engineering expertise with product thinking and visual sensibility. 🗂️ Requirements: 5+ years experience as engineer and/or product designer, Proven experience designing and implementing solutions in complex systems, Ability to work with multiple tech stacks and choose appropriate technologies, Experience in product-led companies, Experience working in cross-functional teams, Ability to deliver complex UI features to production, Strong architectural and technical decision-making skills, Fluency in English, Fluency in Polish 📃 Skills: UI, UX, Architecture, Ecommerce, Shopify, WooCommerce, Magento, SaaS, Payments, Figma 🏢 Description: About us At Juo, we're building technology for businesses that want to build, run and scale their subscription offering. Business model-wise, Juo is a B2B SaaS. Our initial and current focus has been on direct-to-consumer ecommerce brands selling physical products, but our goal is to make Juo components applicable in any industry where a subscription model can be applied for repetitive selling of physical goods. Juo operates at the intersection of a few areas, like ecommerce and payments, but — especially the new platform — with a strong focus on developer experience. The team is lean and consists only of experienced people. In the past, we built successful businesses together. Some unsuccessful ones too — and learned a ton from that. Business-wise, we have passed the most difficult stage for any startup — finding the so-called product-market fit, which means we can focus on building and perfecting the product without financial concerns about the purpose of these actions. We are confident in ourselves, in what we do, and in the value we create for ourselves, our clients, and end users. We're backed by fantastic investors (MOC, Peak, Kogito, SMOK) and advisors, including domain experts from companies such as PayU, Piwik PRO, and Your KAYA. We've just raised our seed round . In other words, we have all the resources needed to be able to focus on building the product, shipping fast, and delivering value to the clients. The role: Product Engineer Why this role Juo operates at the intersection of ecommerce, payments and developer tools. The product we built combines intuitive, modern UI / design with high quality performance. We search for an experienced individual who is engineer by heart but at the same time has a strong visual taste. Someone that knows what will work and what won’t. Someone who can pick up any product-related problem and solve it. A professional that can quickly understand the vision and execute upon it. This role exists to drive the development of our platform’s next iteration, ensuring it’s scalable, user-friendly, and developer-centric. You’ll collaborate across teams to deliver features that solve real customer problems, while fostering a culture of technical excellence and innovation in a lean startup setting. Responsibilities: Helping set Product priorities that are aligned with technical feasibility thanks to your collaboration with Product and Design teams Taking highly complex UI challenges from concept to high quality production ready implementation, Making sure product features delivery is predictable and transparent Being able to justify technical decisions in product outcomes Talking to customer to gain additional edge in product building Collaborate daily with Product and Design to shape priorities and translate them into actionable engineering work. Contribute to developer team by producing code (if needed) and architectural discussions. Promote engineering best practices and ensure they are consistently applied. Requirements and qualifications 5+ years cumulative experience as an engineer and/or product designer Proven ability to design and implement solutions in complex systems Knowledge of many technologies/devstacks and ability to choose the right one for the job at hand Experience in product-led companies Comfort with working in a lean startup way Keeping an open mind when learning new technologies (stumbling upon some setbacks) Proven record of working and delivering in cross-functional teams Being an excellent communicator Fluency in English (written and spoken) Fluency in Polish (written and spoken) Experience with ecommerce platforms (Shopify, Woo, Magento) or subscription-based systems would be nice to have What we offer Building an extraordinary team is a fantastic challenge. We require a lot, but we give back to our teammates as much since they're not company assets, they're founders. What you'll get: Being a part of the team you can trust and rely on, Taking an active part in building a revolutionary product loved by its users, Competitive salary + Employee Stock Ownership Plan (ESOP), Full time, Full remote, Team retreats, Vacation days, Macbook Pro and all the necessary tools (Figma, Cursor, Slack, Linear), 1-on-1 access to the founders, investors, and advisors. How to apply If this feels like the right fit, email us at jobs@juo.com with your resume, a few words about yourself, and why you want to join us. That's the best way to apply 🙂 You can use the button at the bottom of the page, but if you want to increase your chances, email is the way to go. We don't like long, drawn-out processes—the whole thing usually takes around 3 weeks from start to finish. We answer every written application. If your first email clicks, the next step will be a 15–30 minute call with one of us (usually a founder), and we'll take it from there. If you think you'd enjoy working with us but not in this role, let us know—we'd love to hear from you. Either way, we're excited to hear from you! 👋

🏢 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: Fullstack Software Engineer role focused on designing, building, testing, and deploying cloud-based systems using modern software craftsmanship practices. The position involves end-to-end ownership of software delivery in a remote-first environment, leveraging AI-assisted development and clean architecture principles. You will work with a senior team to deliver scalable, high-quality solutions. 🗂️ Requirements: 3+ years experience with Java or Kotlin, 2+ years experience with JavaScript or TypeScript, Hands-on experience with SQL and NoSQL, Experience with AWS, GCP, or Azure, Experience with AI-assisted software development, Ability to design and deploy cloud-based systems, Experience with code reviews and automated testing 📃 Skills: Java, Kotlin, JavaScript, TypeScript, SQL, NoSQL, AWS, GCP, Azure, Microservices, DistributedSystems, EventDrivenArchitecture, TDD, BDD, DDD, Claude, Codex 🏢 Description: We are looking for a Fullstack Software Engineer who is hungry to deliver quality software at pace, by utilising the latest technology trends and modern Software Craftsmanship techniques, as well as learn the craft from a senior Team. Who are we ? We are a remote-first boutique software house company formed by a group of seasoned software experts (average experience in the team is 12 years). What connected all of us, despite a long-term relationship, is a passion for building Great Software that matters. We believe in people, so this is why the key values of Shaped Thoughts are autonomy and trust. Our people have a real and direct impact on what and how we build things. We put extra effort into ensuring everyone can make a difference and grow among other experts. Qualifications: 3+ years of professional experience with Java or/and Kotlin 2+ years of professional experience with JavaScript or/and TypeScript Hands-on experience with SQL and NoSQL Experience with cloud platforms (AWS / GCP / Azure) AI-assisted software development experience Nice to have: Microservices experience Understanding of distributed systems and event-driven architectures TDD, BDD practitioner Domain Driven Design knowledge As a part of the team you will : Design, implement, code review, test and deploy a cloud-based systems Develop software from start to finish - you ship it, you run it! Deliver quality technical solutions that come from a robust design and clean architecture Build & improve software delivery process using the latest tools such as Claude Code or Codex How do we work? We work as a team - all people can freely exchange knowledge and tasks, that’s why we’re looking for strong team players We believe in continuous improvement (Kaizen mindset) We’re happy to share knowledge and spend time learning our domain and new technologies We value asynchronous communication for work, however we meet in person to improve our personal relationships What do we offer ? Being a part of a strong senior team with the ability to learn and exchange knowledge Remote first work environment B2B rate 130-160 PLN / hour dependent on your level of expertise Open bounded B2B contract or contract of employment Recruitment process It consists of the following stages: CV screening Tech screening (45 min) Live coding session (1h) Architecture task (1h) At least one of the stages must be completed on-site in one of the major cities: Wrocław, Poznań, Katowice, Kraków, Warszawa or Gdańsk. We actively encourage AI-assisted development in our daily work. However, during recruitment we want to assess your individual skills - please don't use AI assistance unless explicitly permitted for a given stage.

🏢 Summary: Offer for an experienced Fullstack Developer to develop and refactor a SaaS platform for creating shopping lists, cost estimates and product summaries with automated data collection from e-commerce sites. The role focuses on improving architecture, code quality, automated testing and preparing the system for scaling and international expansion. You will work with Symfony and Vue.js in a cross-functional team, contributing to engineering best practices and deployment automation. 🗂️ Requirements: Minimum 4+ years experience as Fullstack Developer, Commercial experience with Symfony, Commercial experience with Vue.js, Experience writing automated tests, Knowledge of Docker and Docker Compose, Experience with relational databases, Experience building and integrating REST API, Experience with code quality and static analysis tools, Ability to refactor and improve existing codebase, Polish language proficiency minimum C1 📃 Skills: PHP, Symfony, Vue.js, Playwright, PHPUnit, Docker, PostgreSQL, MySQL, REST, Psalm, PHP-CS-Fixer 🏢 Description: Jesteśmy firmą consultingową, zajmującą się wyszukiwaniem i pozyskiwaniem najlepszych talentów ✨ dla naszych klientów . Pomagamy start-upom, software house’om i e-commerce'om i podobnym przedsiębiorstwom w skalowaniu i transformacji poprzez nawiązywanie współpracy z ambitnymi inżynierami posiadającymi prawdziwą pasję do technologii. Obecnie poszukujemy Fullstack Developera , który wesprze rozwój polskiej platformy SaaS — narzędzia ułatwiającego tworzenie list zakupowych, kosztorysów i zestawień produktów oraz automatyzującego zbieranie danych z e-sklepów. Dołączysz do projektu będącego w kluczowej fazie technologicznego rozwoju i transformacji: porządkujemy architekturę, podnosimy jakość i stabilność systemu, wdrażamy automatyczne testy oraz nowoczesne praktyki inżynierskie, które przygotują aplikację na skalowanie i dalszą ekspansję zagraniczną. Szukamy osoby, która lubi ulepszać istniejący kod i procesy, jest otwarta na zmiany i chce mieć realny wpływ na kierunek rozwoju produktu. Jeśli chcesz współtworzyć narzędzie cenione przez projektantów w Polsce, Niemczech, na Ukrainie i kolejnych rynkach — to miejsce może być właśnie dla Ciebie. 🔷 Co będzie należało do Twoich głównych zadań? Refaktoryzacja i usprawnienie istniejącego kodu aplikacji Stosowanie i wdrażanie dobrych praktyk i standardów deweloperskich Tworzenie i rozwijanie nowych funkcjonalności w oparciu o Symfony oraz Vue.js Implementacja testów automatycznych: funkcjonalnych, integracyjnych i jednostkowych ( Playwright) Wsparcie w procesach automatyzacji wdrożeń oraz utrzymaniu spójności środowisk deweloperskich Proaktywny rozwój kompetencji technicznych i aktywne uczestnictwo w warsztatach deweloperskich Udział w codziennych spotkaniach, planowaniu sprintu oraz retrospekcjach. Współpraca z zespołem cross-funkcjonalnym w zakresie rozwoju i jakości produktu. Świadome korzystanie z narzędzi AI w codziennej pracy, z odpowiedzialną oceną wygenerowanych rozwiązań 🎯 Jakie skille, doświadczenie i mindset są przez nas poszukiwane? Minimum 4+ lata doświadczenia na stanowisku Fullstack Developera, szczególnie w technologiach Symfony i Vue.js Znajomość Frameworku Symfony oraz dobrych praktyk backendowych Doświadczenie w pracy z Vue.js oraz tworzeniu komponentów frontendowych Umiejętność pisania testów automatycznych (Playwright, PHPUnit lub inne frameworki automatyzujące) Znajomość Dockera i Docker Compose. Doświadczenie z narzędziami do analizy i formatowania kodu (Psalm, PHP CS Fixer) Doświadczenie w pracy z relacyjnymi bazami danych (PostgreSQL, MySQL) Zrozumienie zasad projektowania aplikacji webowych i pracy z REST API Gotowość do pracy nad refaktoryzacją, usprawnieniami i podnoszeniem jakości kodu Gotowość do szybkiej, dynamicznej pracy w startup-owym stylu Umiejętność współpracy w zespole cross-funkcjonalnym i odpowiedzialność za powierzone zadania Otwartość na wykorzystanie narzędzi AI w pracy deweloperskiej oraz umiejętność świadomej oceny ich wyników. znajomość języka polskiego w mowie min C1 ⭐ Co możemy Ci zaoferować ? Atrakcyjne wynagrodzenie w przedziale 11 000 – 15 000 PLN netto / mies. (B2B) , dopasowane do Twoich umiejętności i doświadczenia. W pełni zdalną pracę – możesz działać skąd chcesz, w warunkach, które sprzyjają Twojej produktywności. Dużą samodzielność i realny wpływ na kształtowanie kierunku rozwoju produktu i procesów — Twoje decyzje będą naprawdę zauważalne. Płatny, 14-dniowy urlop po roku współpracy Dostęp do warsztatów i inicjatyw rozwojowych , które pomogą Ci rozwijać umiejętności techniczne i miękkie. Meetupy i spotkania integracyjne w Warszawie , dzięki którym możesz poznać zespół także poza Slackiem. Nie czekaj! Aplikuj już teraz :)

🏢 Summary: Full-Stack Engineer role focused on building and scaling a subscription-based platform using TypeScript and Vue in a fast-paced startup environment. The position involves developing core product features, contributing to architecture decisions, and improving performance and reliability. The role requires strong system design expertise and close collaboration with cross-functional teams. 🗂️ Requirements: 7+ years software engineering experience, Strong full-stack development experience, System design skills, Ability to make pragmatic technical decisions, Experience with TypeScript and Vue, Fluent Polish, Fluent English 📃 Skills: TypeScript, Vue, Fastify, PostgreSQL, Redis, BullMQ, Kubernetes, GitHub, CI/CD, Segment, Prometheus, Sentry 🏢 Description: Full-Stack Engineer (TypeScript / Vue) About the company Our client is a fast-growing tech startup building a platform that enables businesses to launch and scale subscription-based offerings. Their product helps companies introduce models like subscriptions, memberships, or curated bundles without building complex infrastructure from scratch. Already used by hundreds of brands across Europe and North America, the company is now entering a strong growth phase. You’ll join a small, experienced team that values ownership, autonomy, and real impact. The environment is fast-paced, collaborative, and focused on building high-quality products. Tech stack TypeScript, Fastify, Vue, PostgreSQL, Redis, BullMQ, Kubernetes, GitHub Actions (CI/CD), Segment, Prometheus, Sentry. Responsibilities Build and develop core product features with scalability and developer experience in mind Contribute to architecture and technical decisions Improve performance, reliability, and existing solutions Collaborate closely with product and cross-functional teams Requirements 7+ years of experience as a software engineer Strong full-stack development experience and system design skills Ability to make pragmatic technical decisions Comfortable working in a startup environment Fluent Polish and English Nice to have: experience with e-commerce platforms (Shopify, WooCommerce, Magento). What’s offered Competitive salary + equity (ESOP), fully remote work, paid time off, regular team meetups, and direct collaboration with experienced founders and a senior team.

🏢 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 Developer role focused on architecting and delivering high-performance web applications using React and Node.js. The position involves leading system design, building scalable front-end and back-end solutions, and overseeing cloud-based deployments and DevOps processes. The role includes technical ownership of microservices, APIs, databases, and application performance in a hybrid Warsaw-based setup. 🗂️ Requirements: 7+ years full stack development experience, 2+ years in senior or technical lead role, Expert-level React.js with Hooks and Redux, Advanced JavaScript ES6+ proficiency, Strong Node.js and Express.js experience, Experience designing REST or GraphQL APIs, Experience with OAuth, JWT, sessions, RBAC, Database design and optimization with PostgreSQL, MySQL, or MongoDB, Hands-on Docker experience, Experience with AWS, Azure, or GCP, CI/CD pipeline management experience, Proficiency with Git workflows, Bachelor’s or Master’s in Computer Science or related field 📃 Skills: React, Redux, JavaScript, HTML5, CSS3, Node.js, Express, GraphQL, REST, OAuth, JWT, RBAC, PostgreSQL, MySQL, MongoDB, Docker, Kubernetes, AWS, Azure, GCP, Git, CI/CD, Webpack, Babel, Vite 🏢 Description: 🧩 About the Company Our client is a rapidly growing US-based technology firm with global operations. With a strong commitment to innovation and quality engineering, the company is building a new engineering hub in Warsaw. This is your opportunity to join a high-performing team and play a pivotal role in developing next-generation digital solutions for the private capital markets. 📍 Location & Setup Start remotely and transition to a hybrid model based in Warsaw (3 days/week in the office in the coming months). 🧠 The Role: Senior Full Stack Developer (React & Node.js) We’re looking for an expert-level Senior Full Stack Developer with at least 7 years of professional experience in designing, architecting, and delivering high-performance web applications. You will take ownership of complex technical challenges across both the front-end and back-end, drive architectural decisions, and provide technical leadership and mentorship within the software development lifecycle. 🔧 Key Responsibilities Technical Leadership: Architect and develop scalable, responsive UIs with React.js, Redux, and modern JavaScript (ES6+). System Design: Design, build, and scale advanced server-side applications, microservices architecture, and RESTful/GraphQL APIs with Node.js and Express. Data Architecture: Lead database design, optimization, and integration strategies (PostgreSQL, MySQL, or MongoDB). Quality Assurance: Define testing strategies, write robust unit/integration tests, and establish efficient debugging protocols for the team. DevOps & Deployment: Oversee and optimize CI/CD pipelines, containerization using Docker, and cloud deployments. Agile Mentorship: Lead agile collaboration with product managers, designers, and engineers, while mentoring mid-level and junior developers. Performance: Proactively monitor system performance, identify bottlenecks, and maintain high-availability production-grade applications. Standards: Establish and maintain comprehensive technical documentation and coding standards. 📌 What We’re Looking For Front-End: Expert-level experience with React.js, Hooks, Redux, and complex component-based architecture. Deep mastery of HTML5, CSS3, and ES6+. Advanced configuration and optimization experience with build tools like Webpack, Babel, or Vite. Back-End: Senior-level proficiency in Node.js & Express.js for enterprise applications. Extensive API design and architecture experience (GraphQL highly preferred, alongside REST). Deep understanding and implementation experience with advanced security and authentication protocols: OAuth, JWT, sessions, and RBAC. Databases & DevOps: Proven experience in scaling and optimizing relational and non-relational databases (PostgreSQL, MySQL, or MongoDB). Solid hands-on experience with Docker; Kubernetes experience is highly advantageous. Demonstrated experience designing and deploying applications on cloud platforms (AWS, Azure, or GCP). Advanced proficiency with Git workflows and driving Agile/Scrum methodologies. 🎓 Qualifications Bachelor’s or Master’s in Computer Science or a related field. 7+ years of hands-on experience in full stack development. 2+ years of experience in a senior or technical lead capacity. Proven track record of architecting, deploying, and maintaining high-traffic production applications. 💡 Soft Skills Strategic, analytical thinker and highly effective problem-solver. Strong technical leadership, team collaboration, and cross-functional communication skills. Self-motivated with excellent time management and the ability to drive projects autonomously. Passion for continuous learning, adopting new technologies, and sharing knowledge with the team. 🎁 What’s Offered Competitive salary up to $6,200 USD/month. Hybrid remote role with 3 days form office in the heart of Warsaw Generous Paid Time Off (PTO). Comprehensive full benefits package. The unique chance to shape the technical foundation of a new engineering hub and lead high-impact projects. A supportive, innovation-driven work environment that values technical excellence.

🏢 Summary: Fullstack Engineer role focused on building and scaling a data and analytics platform for investment decision-making, leveraging machine learning and strategic data. The position involves end-to-end development of production-grade applications, API integration, and ensuring platform scalability and performance in a hybrid work model. 🗂️ Requirements: 4+ years of experience with TypeScript and Node.js in production environments, Strong knowledge of HTML and CSS, Experience with SQL and PostgreSQL databases, Ability to design and integrate REST and GraphQL APIs, Experience with automated testing, pair programming, and peer review practices 📃 Skills: TypeScript, Node.js, HTML, CSS, SQL, PostgreSQL, GraphQL, REST, GCP, DevOps 🏢 Description: About the Project: Our client is a Swedish fintech company expanding in Poland. This project focuses on developing a data and analytics platform designed to revolutionize investment decision-making by leveraging machine learning and strategic data. As a Fullstack Engineer, you will design, develop, and maintain scalable solutions, collaborating with cross-functional teams to ensure the delivery of high-quality features. Work Mode : Hybrid – 2/3 days in the Warsaw office Job Responsibilities: Collaborate with cross-functional teams to ensure the delivery of high-quality features. Contribute to all stages of the development lifecycle. Design, develop, and maintain scalable solutions that support investment operations. Leverage machine learning and strategic data to deliver exceptional insights. Work closely with passionate professionals who believe in collaboration, innovation, and making a meaningful impact. Ensure the platform's scalability and performance through continuous improvement and optimization. Expectations: Must have: 4+ years of experience developing production-grade applications using TypeScript and Node.js Strong understanding of HTML, CSS, and design principles Knowledge of database management with SQL and PostgreSQL Experience with software craftsmanship practices, including automated testing, pair programming, and peer review Ability to write and integrate APIs in various formats such as GraphQL and Rest Nice to have: Experience with Google Cloud Platform (GCP) and DevOps practices. Familiarity with cloud-native development and scalable system architectures. We offer: Ongoing support from a dedicated agent who is caring about your project continuity, contact with clients, necessary formalities, work comfort, and development. Career Development Program – advice on career planning based on the latest trends and market needs in IT, including consultations with career agents and mentors. Access to 7N Learning & Development – a development and educational platform offering webinars, a library of articles and industry reports, and frequent invitations to both one-time and recurring events focused on technical, business, and lifestyle topics. Spectacular events, both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g. family picnics), Professional growth Professional growth beyond your current project. You can actively engage in knowledge sharing through the 7N Services offering, designed for 7N clients. Connections and access to the expertise of top IT professionals in the market – the average professional tenure of our consultants in Poland is over 10 years, A complete benefits package, including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad.

🏢 Summary: Senior Java Full-Stack Engineer role focused on designing and evolving scalable cloud-based products using Java and modern frontend technologies. The position involves building robust backend services, contributing to architecture decisions, and working with cloud-native deployments in a remote B2B setup. It requires strong independence and experience delivering high-quality, production-grade systems. 🗂️ Requirements: Senior-level software engineering experience, Strong hands-on experience with Java, Backend development expertise, Full-stack development experience, Experience with modern frontend frameworks, Understanding of cloud platforms, Experience with cloud-native architectures, Experience building production-grade systems, Ability to design scalable architectures, Experience with CI/CD and DevOps practices 📃 Skills: Java, GCP, AWS, Azure, Kubernetes, Docker, CI/CD, REST, API, Microservices, HTML, CSS, JavaScript, DevOps, Observability 🏢 Description: We are seeking a highly skilled Java Full-Stack Engineer to join our engineering team in building and evolving cloud-based products. The ideal candidate will possess extensive experience in software development, particularly with Java and modern frontend technologies. A strong understanding of cloud platforms, specifically GCP, is highly desirable, along with the ability to work independently within a senior engineering environment. What we offer: Remote Role Long Term B2B Contract Rate: 170-190 PLN/H + VAT Main Responsibilities Design, build, and maintain scalable full-stack applications using Java and modern frontend technologies. Develop robust backend services, APIs, and integrations. Work with cloud-native architectures and deployment models. Contribute to technical architecture and engineering decision-making. Improve reliability, performance, security, and maintainability of the platform. Collaborate closely with product, design, and engineering colleagues. Mentor other engineers and help raise the technical bar across the team. Explore and apply modern development practices, including AI-assisted and agentic coding workflows where relevant. Key Requirements Strong senior-level experience as a software engineer. Deep hands-on experience with Java and backend development. Solid full-stack development experience, including modern frontend frameworks. Good understanding of cloud platforms and cloud-native engineering. Ability to work independently and make sound technical decisions. Strong communication skills and the ability to collaborate across teams. Experience building production-grade systems with high standards for quality, scalability, and maintainability. Nice to Have Experience with Google Cloud Platform , though AWS or Azure experience is also relevant. Experience with Kubernetes, containers, CI/CD, observability, and modern DevOps practices. Knowledge of AI-assisted development tools, coding agents, or agentic coding workflows. Experience in fintech, identity, compliance, SaaS, or other high-trust environments. Other Details Preferred locations include Vilnius, Lithuania or elsewhere in Lithuania , with secondary options being Poland or remote within the EU . This role is suitable for experienced professionals keen on working with innovative technologies in a dynamic environment.

🏢 Summary: Fullstack Developer role focused on building and scaling web-based MVP products from scratch, collaborating with cross-functional teams and leveraging AI tools to deliver scalable, secure, and high-quality solutions. The position involves roadmap ownership, architecture design, cloud deployment, and continuous product improvement based on metrics and user feedback. 🗂️ Requirements: Proven experience as Fullstack Developer with portfolio of web-based products, Strong knowledge of TypeScript or JavaScript, Knowledge of at least one: Python, Rust, or C#, Experience with React and JSX-based frameworks, Experience with Next.js, Understanding of cloud computing platforms and networking, Experience with Docker and CDN technologies, Knowledge of Edge Workers, Experience with data modeling, Experience with relational databases, Knowledge of PostgreSQL, Architecture design skills, Ability to use AI tooling for coding productivity, Familiarity with Agile methodologies, Experience with Jira or Linear 📃 Skills: TypeScript, JavaScript, Python, Rust, C#, React, Next.js, JSX, Docker, CDN, EdgeWorkers, PostgreSQL, SQL, Cloud, AI, Jira, Linear, Agile 🏢 Description: We’re a well-knit digital design studio working with products, brands and (no-)code. Founders come to us because we help them define, build and scale their MVPs. That means we gotta think beyond “u mnie działa” (though we love all the memes). You’re free to do the job your way, but the team is there for you. Doesn’t matter if you’re just in a pickle or need a real talk about your career — there’s always folks happy to give you a hand. And hey, we’re not here to point the finger at what to do. If you see something we can improve or know how to reach our goals — do it and get your cred. The team is already asking about you. Don't make them wait, apply! Your day-to-day Developing and maintaining the product roadmap & ensuring alignment with the project vision. Collaborating with cross-functional teams, including product design, engineering, no-code, to ensure that the product meets the desired specifications Defining growth metrics for individual products in cooperation with the team Writing code with help of AI to match the best standards of product development. Ensuring the product is scalable, reliable, and secure Testing the product thoroughly to identify and fix any issues before launch Monitoring the product's performance and user feedback after launch, iterating and improving as necessary It's a match if you're like this Proven experience as a Fullstack Developer or a similar role, with a portfolio of successful web-based products Solid skills how to leverage AI tooling for productivity gains. Strong knowledge of modern web development languages, TypeScript/JavaScript, and at least one of Python, Rust, C#. Experience with React/JSX-based web frameworks, preferably Next.js (app directory) Strong understanding of cloud computing platforms, networks, and associated technologies like Docker, CDN, Edge Workers, etc. Knowledge of data modeling and relational databases preferably PostgreSQL Architecture design skills Familiarity with Agile development methodologies and project management tools such as Jira or Linear Excellent communication and collaboration skills Passion for innovation and a desire to stay up-to-date with the latest development trends and technologies (nice to have) Bachelor's degree in Computer Science, Engineering, or a related field If you are a highly motivated and skilled Fullstack Developer looking for an exciting opportunity to create innovative products from scratch, we invite you to apply for this position. What you get Work wherever & whenever you want (but bonus points for being relatively close to our HQ) Unlimited budget for growth Unlimited hardware & software budget Paid time off and sick leave No overtime (but paid double if you volunteer) Dinners, retreats, and workations Worksmile cafeteria plan The process 1. You first Hit that big Apply button and tell us about yourself. 2. Vibe check Let’s jump on a call, so we can both figure whether it’s a fit. 3. Show off We’ll ask you to do a little task (that we’ll pay for) so we can see your wizardry. 4. Join the team One last interview to talk details and that’s it, you’re on board! Find out more at tonik.com