Senior Full Stack Developer

🏢 Summary: Full Stack Developer role working on diverse client projects using a modern TypeScript-based stack across frontend and backend. The position involves building and shaping digital products with direct client collaboration and strong code quality practices. You will contribute to product direction while developing scalable web applications. 🗂️ Requirements: Strong understanding of JavaScript, Commercial experience with React.js, Proficiency in TypeScript and its type system, Experience with Node.js backend development, Knowledge of server-client communication, Understanding of web platform and Web APIs, Experience with relational databases, Knowledge of CSS methodologies and preprocessors, Ability to write clean, maintainable code 📃 Skills: TypeScript, JavaScript, React, Next.js, Node.js, NestJS, PostgreSQL, CSS, SCSS, Tailwind, CSSinJS, APIs, SQL 🏢 Description: About the company WAYF is where ideas go to be made real. We're a digital product agency built for visionaries – from ambitious founders to global enterprises. Since 2020, our 35+ person team (primarily based in Poland, working globally) has helped category leaders design and deliver digital experiences that move the needle. We're trusted by the Council of Europe Development Bank (CEB) to reimagine how they communicate the human stories behind their multi-billion euro impact. We collaborate with large corporations like Ingersoll Rand on product design, engineering, and process innovation across global markets. We shape digital platforms for cultural icons like Okolice Ciała – whose books, viral content, and community inspire millions across Poland and beyond. Startups and scaleups like Framer and Rye (founded by Justin Kan of Twitch) choose us for product design, brand upgrades, and mission-critical product and marketing launches. VC firms like Primary and 201.vc rely on us to bring clarity and craft to their brands and portfolio companies. Our track record also includes helping shape early product and design foundations at Ramp Network – now one of the most recognisable crypto brands globally – in a multi-year collaboration that spanned their rise from bold beginnings to breakout success. Inside WAYF, feedback is fast and honest. People are kind, curious, and self-driven. We care deeply about the work – and each other. We operate like a tight-knit studio with the ambition of a global consultancy. It's a place to grow, do meaningful projects, and build what others say can't be done. About the role We're lucky to work with some really exciting ventures, which means we can offer new joiners a wide range of interesting projects. Our client base spans various sectors, giving you exposure to different industries and challenges. Since you're coming on board while we're in a growth phase, you'll have a unique chance to grow right along with us. It's a thrilling time to join – you'll be able to make a real impact and shape your role as the company continues to evolve. We've got the stability of an established business, but we haven't lost that startup energy and flexibility. We are looking for a Full Stack Developer to join our team permanently and work with our key clients on their most exciting projects! Technical info for this position General: TypeScript Backend: Node.js, NestJS, PostgreSQL Frontend: React.js, Next.js Mobile: React Native (optional/nice-to-have) ‎ Core tools we use Slack, Linear, Notion Tasks Use a modern tech stack: TypeScript, React.js, Next.js, Node.js Work directly with our clients, alongside our tightly knit team (Project Managers included!) Have direct impact on the product vision and direction Write clean, maintainable code Have 100% of your code reviewed Self-manage and organise your work as you like — as long as it's effective Join our knowledge-sharing initiatives Tech requirements ✔️ A solid understanding of JS, its benefits, and limitations ✔️ Commercial experience with React.js ✔️ Understanding of the Typescript type system, it's pros and cons ✔️ Knowledge of different techniques of writing CSS - CSSinJS, CSS modules, SCSS, Tailwind ✔️ Knowledge of web platform and its APIs ✔️ Understanding of how the web works from top to bottom - server-client communication ✔️ Understanding of how databases work and how to use them efficiently A note on AI We use AI tools daily: in development, in design, in how we think about problems. We're not looking for people who treat this as a threat or a shortcut, but as a fundamental shift in how great software gets built. If you're curious, adaptive, and already weaving AI into your workflow, you'll feel right at home. If you're waiting for it to blow over – this probably isn't the right fit. Soft requirements 🗣️ English B2+ (for communication with Clients and Partners) and Polish B2+ (for internal communication) ⛱️ Experience with working remotely 💬 Transparent communication 👀 Attention to detail 👩‍💻 Self-driven and can self-manage 👋 Kind and can take & give feedback openly 🚀 A knack for product understanding and value-driven development Compensation Junior - B2B 6 000 - 9 000 PLN Mid - B2B 10 000 - 17 000 PLN Senior - B2B 18 000 - 25 000 PLN Benefits 💰 Annual performance-based bonuses ⛱️ Work fully remotely with full autonomy (no micromanagement) 💻 Work with modern hardware and software (we aim to use MacBooks exclusively, Linux is an option in specific cases) 💊 Stay on top of your game with generous private healthcare coverage (including dental) 🏃‍♂️ Into sports? Enjoy our Multisport package for access to their wide range of discounts and free passes 🌴 Take time off whenever you need it. 23 paid vacation days per year (pro-rated during your first year) plus paid days off during our annual retreats 🍱 Enjoy a 0.5h paid lunch break every workday 💸 Grow through regular progress check-ins, with salary increases and promotions 👫 Join our bi-annual retreats to hang out with the team (optional but encouraged) What does our recruitment process look like? After your CV has grabbed our attention, you can expect: Quick intro call to get to know each other. Technical Interview - a 1.5h call with one of our senior developers, where you'll be tested for relevant theoretical and practical skills You get an offer from us and we start working together ASAP! Footnote Check out wayfdigital.com for more info We are committed to building an open, inclusive environment for all members of our collective. WAYF does not and shall not discriminate on the basis of race, color, religion, gender, gender expression, age, national origin, disability, marital status, military status, sexual orientation, or social status.

🏢 Summary: A fully remote Full Stack Engineer role in a late-stage product company building a new engineering team in Poland. The position focuses on developing scalable, production-grade applications using TypeScript, React, and Node.js across the stack. Engineers collaborate cross-functionally to deliver end-to-end features with strong emphasis on quality, performance, and reliability. 🗂️ Requirements: Strong proficiency in TypeScript, Experience with React, Experience with Node.js or server-side TypeScript, Understanding of testing practices, Experience with CI/CD, Experience with version control, Ability to work in a collaborative, fast-paced environment 📃 Skills: TypeScript, React, Node.js, CI/CD, Git, APIs, Microservices, AWS, GCP, Azure, Testing 🏢 Description: A late-stage (Series D), well-funded product company is building a brand-new, fully-remote engineering team in Poland. We're looking for talented Full Stack Engineers who can build high-quality, scalable applications using TypeScript , React , and modern backend frameworks. You'll work closely with product, design, and other engineers to deliver features end-to-end. While financial markets experience is a plus, it is not required - strong engineering fundamentals matter more. We are open to candidates who specialize in only front-end or only back-end development, as well as true full-stack engineers. What You'll Do Design, build, and maintain production-grade applications using TypeScript across the stack. Develop intuitive, performant user interfaces using React and modern front-end tooling. Build and maintain backend services, APIs, and integrations (Node.js / TypeScript). Collaborate with product managers and designers to translate requirements into technical solutions. Write clean, testable, maintainable code with strong attention to performance and reliability. Participate in code reviews, architecture discussions, and continuous improvement initiatives. Troubleshoot issues across the stack and contribute to a culture of engineering excellence. Required Skills Strong proficiency in TypeScript . Experience with React for front-end development. Experience with Node.js , server-side TypeScript, or similar backend frameworks. Solid understanding of modern software engineering practices: testing, CI/CD, version control, code reviews. Ability to work in a fast-paced, collaborative environment. Nice to Have Experience working in financial markets , fintech, or trading systems. Familiarity with cloud platforms (AWS, GCP, Azure). Experience with microservices, event-driven architectures, or distributed systems. Exposure to data visualization libraries or real-time data applications. Experience with performance optimization on either the front-end or back-end.

🏢 Summary: Frontend-focused role developing and maintaining scalable React applications with TypeScript, integrated with Node.js backend services and data pipelines. The position involves building production-grade, data-driven solutions, contributing to architecture decisions, and optimizing complex UI workflows. It offers work on a high-impact product within a modern TypeScript and React ecosystem. 🗂️ Requirements: Strong proficiency in React, Strong proficiency in TypeScript, Experience building large-scale production applications, Experience with Node.js and API integrations, Experience with data-driven applications, Understanding of modern frontend architecture, Knowledge of testing practices, Ability to work in cross-functional teams 📃 Skills: React, TypeScript, Node.js, APIs, Microservices, Snowflake, Testing, Architecture, Data, Pipelines 🏢 Description: ✅ Your responsibilities: Develop and maintain scalable React applications with TypeScript across the full frontend stack Collaborate closely with backend engineers, data teams, and product managers to deliver high-quality solutions Ensure type safety, code quality, and maintainability throughout the application Participate in design and architecture discussions, proposing improvements to frontend patterns and integrations Troubleshoot and optimize complex UI and data-intensive workflows Support knowledge sharing and mentor junior developers when needed 🧠 Our requirements: Strong proficiency in React and TypeScript , with experience building large-scale, production-grade applications Familiarity with Node.js backend development and integration with APIs or microservices Experience working with data-driven applications , ideally with Snowflake, data lakes, or pipelines Solid understanding of modern frontend architecture, testing, and best practices Ability to communicate effectively in a cross-functional, high-stakes environment Proactive, self-motivated, and capable of delivering high-quality solutions under tight timelines 🌟 What we offer: Opportunity to work on a premium, high-profile product with global business impact Exposure to a modern TypeScript/React ecosystem, integrated with backend Node.js services and advanced data pipelines Collaborative environment with experienced engineers and product leaders Career growth and technical mentorship in a cross-functional team Competitive employment package and benefits.

🏢 Summary: Full Stack JavaScript Developer role focused on building and maintaining a large-scale data processing and analytics platform, covering backend services, frontend applications, and scalable data pipelines. The position involves developing RESTful APIs, microservices, and cloud-based solutions in AWS, with strong emphasis on performance, security, and database optimization. The role includes working on complex systems using Node.js, React, and PostgreSQL in a modern engineering environment. 🗂️ Requirements: Strong experience with Node.js (v22+), Strong experience with Express.js, Solid knowledge of React (v16+), Experience with PostgreSQL and query optimization, Very good understanding of asynchronous JavaScript, Experience designing RESTful APIs, Knowledge of microservices architecture, Understanding of distributed systems, Experience with testing frameworks, Experience with Git, Knowledge of modern build tools, Understanding of web security best practices, Basic knowledge of AWS, Ability to implement authentication and authorization mechanisms (JWT, ACL) 📃 Skills: JavaScript, Node.js, Express.js, React, PostgreSQL, SQL, REST, Microservices, AWS, JWT, ACL, Jest, Mocha, Git, Webpack, Rollup, ETL, CI/CD, Docker 🏢 Description: Full Stack JavaScript Developer (Node.js / React) About CRIF CRIF is an international company providing credit and business information services, data processing, and advanced decisioning solutions. We support financial institutions, insurers, utilities, and enterprises with reliable data, analytics, and secure, scalable technology platforms. WBO (White Blue Ocean) is CRIF’s personal and cyber security division focused on advanced monitoring of the Open and Dark Web. Using AI and machine learning, it identifies leaked, stolen, or exposed data and delivers proactive alerts for individuals and companies. Role Overview We are looking for an experienced Full Stack JavaScript Developer to join the WBO team and help build a complex data processing and analytics platform, covering backend services, frontend applications, and large-scale data pipelines. Key Responsibilities Design, develop, and maintain scalable backend services using Node.js Build modern, responsive web applications with React Develop and maintain RESTful APIs and microservices Implement and optimize data processing pipelines (ETL, streaming) Design and optimize PostgreSQL databases and complex queries Implement authentication and authorization mechanisms (JWT, ACL) Optimize application performance and data processing efficiency Write and maintain unit and integration tests Participate in code reviews and ensure high code quality Deploy and maintain applications in an AWS cloud environment Troubleshoot production issues and implement sustainable solutions Collaborate with the team on architecture and technical decisions Document technical solutions and API specifications Required Skills & Experience Strong experience with Node.js (v22+) and Express.js Solid knowledge of React (v16+) Experience with PostgreSQL and query optimization Very good understanding of asynchronous JavaScript (async/await, Promises) Experience designing scalable RESTful APIs Knowledge of microservices and distributed systems Familiarity with testing frameworks (Jest, Mocha) Experience working with Git and modern build tools (Webpack / Rollup) Understanding of web security best practices Basic knowledge of AWS and cloud architecture concepts Nice to Have Experience with AWS Lambda, S3, Athena, CloudWatch Docker and CI/CD pipelines (e.g. Jenkins) TypeScript, Redis, Bull, Socket.io Python or Rust for performance-critical components Experience working with and modernizing legacy systems What We Offer Employment contract Hybrid work model (50/50 – office in Kraków ) Work on large-scale, data-driven systems in an international environment Real impact on system architecture and technology decisions Modern tech stack and strong engineering culture Cooperation with experienced and supportive teams Competitive salary aligned with your experience (salary range will be shared during the first interview)

🏢 Summary: Hybrid Team Lead FullStack role focused on building and scaling high-performance web applications using React and Node.js, while leading a development team. The position combines hands-on front-end and back-end development with architectural design, API development, and cloud-based deployments. You will drive technical excellence across the full software development lifecycle in an international R&D environment. 🗂️ Requirements: 7+ years full-stack development experience with React and Node.js, 2+ years experience in team leadership or senior developer role, Expertise in React.js, Redux, React Hooks, Strong knowledge of HTML5, CSS3, JavaScript (ES6+), Proficiency in Node.js and Express.js, Experience designing RESTful APIs or GraphQL APIs, Knowledge of OAuth, JWT or session-based authentication, Experience with PostgreSQL or MySQL, Experience with AWS, Azure or GCP, Experience with Docker and CI/CD pipelines 📃 Skills: React, Redux, JavaScript, HTML5, CSS3, Node.js, Express, GraphQL, REST, OAuth, JWT, PostgreSQL, MySQL, AWS, Azure, GCP, Docker, Kubernetes, CI/CD, Webpack, Babel, Vite 🏢 Description: Team Lead FullStack (Node.js, React) IT · Warsaw (City Center) · Hybrid About the Client Our Client is a fast-growing, international technology company that provides innovative digital solutions for the global market. They are currently expanding and developing their R&D center in Warsaw. They are a leader in AI-powered enterprise operations, delivering digital solutions and consulting services that drive value and transform businesses. They specialize in using advanced technology to streamline operations, improve efficiency, and unlock new revenue opportunities, particularly within the private capital markets. With over a decade of experience supporting high-growth companies, they bring deep domain expertise and a proven ability to turn technology into a strategic advantage. Role Overview We are seeking a highly skilled Full Stack Team Lead with expertise in React and Node.js to lead our dynamic team. The ideal candidate will have over 7 years of experience in designing and building high-performance web applications, along with demonstrated leadership experience. You will lead a team of developers, working on both front-end and back-end development, contributing to every stage of the software development lifecycle, and mentoring junior team members. Key Responsibilities Team Leadership & Mentorship: Lead and mentor a team of software engineers, fostering a collaborative and high-performance environment. Provide technical guidance, conduct code reviews, and support professional development. Front-End Development: Build and maintain interactive and responsive user interfaces using React.js, Redux, and modern JavaScript (ES6+). Back-End Development: Develop robust, scalable server-side applications and RESTful APIs using Node.js and Express. Application Architecture & Integration: Design and implement scalable architectures and microservices that meet business needs, ensuring best practices are followed across the team. Collaborate with database engineers to design efficient database schemas and manage data interactions using MongoDB or SQL databases. Deployment & Testing: Manage deployments and ensure seamless delivery of updates using CI/CD pipelines and containerization tools like Docker. Ensure high-quality code by writing unit and integration tests, performing debugging, and optimizing application performance. Collaboration & Documentation: Work closely with designers, product managers, and other developers to deliver innovative and user-centric solutions. Create and maintain technical documentation for applications, APIs, and architectural decisions, ensuring team adherence to documentation standards. Requirements & Qualifications Experience & Education: 7+ years of professional experience in full-stack development with React and Node.js. 2+ years of experience in a team lead or senior leadership role, guiding and mentoring other developers. A Bachelor's degree in Computer Science or equivalent is preferred. Front-End Stack: Expertise in React.js, Redux, React Hooks, and component-based architecture. Strong knowledge of HTML5, CSS3, and modern JavaScript (ES6+). Familiarity with front-end tools like Webpack, Babel, or Vite. Back-End Stack: Proficiency in Node.js and Express.js for building server-side applications. Experience with API design and integration, including GraphQL (preferred) or RESTful services. Knowledge of authentication mechanisms such as OAuth, JWT, and session-based authentication. Database & DevOps: Hands-on experience with databases such as PostgreSQL or MySQL. Experience with cloud platforms such as AWS, Azure, or GCP. Familiarity with containerization tools like Docker and orchestration tools like Kubernetes is a plus. Soft Skills: Strong problem-solving and analytical skills. Excellent communication and collaboration abilities, with a proven ability to lead and motivate a team. Eagerness to stay updated on emerging technologies and trends, and to drive continuous improvement within the team. What Is Offered Compensation: Monthly compensation up to 9,000 USD gross . Contract Type: Employment Contract (Umowa o Pracę) ONLY . Please note that there is strictly no B2B option available for this position. Work Model: Hybrid (3 days working from the office located in the center of Warsaw, 2 days working from home). Stability: Long-term cooperation with a stable, international organization. Culture: We value creative problem solvers who learn fast, work well in an open and diverse environment, and enjoy pushing the bar for success ever higher. We do work hard, but we also choose to have fun while doing it.

🏢 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: Full-time Senior Full Stack Developer role focused on building scalable frontend applications and BFF services using TypeScript, React, Node.js, and NestJS. The position involves API and LLM integrations, frontend architecture design, performance optimization, and collaboration with product and engineering teams. Hybrid work from Kraków is expected 2–3 days per week. 🗂️ Requirements: Strong experience with TypeScript, Several years of software engineering experience, Strong React and modern frontend development expertise, Experience with frontend unit and integration testing, API design and development experience with NestJS, Experience with Node.js, Understanding of server-side rendering and Server Components, Knowledge of CDN strategies and caching, Understanding of software architecture and system design, Experience with Docker, Experience with Git, Experience with CI/CD, Experience with Azure, Ability to work in uncertain environments and solve problems pragmatically 📃 Skills: TypeScript, React, NestJS, Node.js, Docker, Git, CI/CD, Azure, GraphQL, Zustand, ReactQuery, Python 🏢 Description: Role overview Svitla Systems Inc. is looking for a Senior Full Stack Developer for a full-time position (40 hours per week) in Kraków, Poland. Our client is a British wholesale distributor. You will be responsible for building user interfaces with TypeScript and React, developing and maintaining BFF services, integrating APIs and LLM services, designing scalable frontend architecture, optimizing application performance and user experience, implementing error handling and resilience patterns, and collaborating with product and engineering teams to deliver features from prototype to production. Office work is expected 2-3 days per week. Responsibilities Building user interfaces using TypeScript and React. Building and maintaining Backend for Frontend (BFF) services to orchestrate API calls and shape data for user interface needs. Integrating APIs, LLM services, and streaming endpoints to deliver product features. Designing and implementing scalable and maintainable frontend architecture. Ensuring performance, responsiveness, and optimal user experience across the application. Implementing error handling, loading states, and resilience patterns for distributed systems. Collaborating with product and engineering teams to bring concepts from prototype to production. Requirements Strong hands-on experience with TypeScript development. Several years of experience in software engineering, ideally with a strong focus on React and modern frontend development tools. Experience with frontend testing, including unit and integration testing. API design and development experience using NestJS and Node.js. Understanding of server-side rendering, Server Components, CDN strategies, and caching. Solid understanding of software architecture, clean code, and system design. Ability to work effectively in environments with a high degree of uncertainty and take a pragmatic, solution-oriented approach to problem-solving. Experience with Docker, Git, CI/CD, and Azure. Nice to Have Knowledge of GraphQL APIs. Experience with state management libraries (e.g. Zustand, React Query). Familiarity with Python, particularly in the context of working with backend services or AI-powered systems. Experience building data-intensive or real-time user interfaces. Familiarity with designing user experiences for AI-powered features or non-deterministic outputs. We offer US and EU projects based on advanced technologies. Competitive compensation based on skills and experience. Regular performance appraisals to support your growth. Flexibility in the workspace, either remote or in our welcoming office. Comprehensive medical insurance after one month. MultiSport card with access to 2500 sports facilities all over Poland Bonuses for recommendations of new employees. Bonuses for article writing, public talks, and other activities. 15 vacation days, 10 national holidays, 10 sick leaves, and family days off. Personalized learning program tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Welcome and anniversary presents, gifts for children, and more. Regular corporate events and meetups. Awesome team, friendly and supportive community!

🏢 Summary: Frontend Developer role focused on building modern web applications using React, TypeScript, and Next.js (App Router) in a clean, up-to-date monorepo environment. The position involves developing complex UI components, maintaining a shared design system, and implementing comprehensive unit and E2E testing. The role emphasizes high code quality, collaboration, and use of modern tools including AI-assisted development. 🗂️ Requirements: Strong JavaScript skills, Strong TypeScript skills, Commercial or strong practical experience with React, Good knowledge of HTML, Good knowledge of CSS, Experience with responsive design, Experience with REST APIs, Experience with GraphQL APIs, Experience writing unit tests, Experience with React Testing Library or similar, Hands-on experience with E2E testing, Experience with Playwright or similar E2E tool, Proficiency with Git, Ability to work independently, Communicative English 📃 Skills: JavaScript, TypeScript, React, Next.js, HTML, CSS, Tailwind, Radix, shadcn, Storybook, Playwright, Vitest, Jest, ReactTestingLibrary, REST, GraphQL, Git, Turborepo, Yarn, TanStack, react-hook-form, Auth0, i18n, Claude, Cursor 🏢 Description: About us We build modern, high-quality web applications for the mobility sector using a clean TypeScript/React/Next.js monorepo. We keep our stack up to date and work with the latest stable versions of Next.js (App Router), React 19+, Tailwind, Playwright, GraphQL, and Storybook for component development and documentation. We also actively integrate AI tools into our daily workflow. You won’t have to deal with legacy code, outdated patterns, or old dependencies. Our team (8-10 people) maintains high standards through regular code reviews, 1:1 mentoring, and continuous refactoring and experimentation with new tools and practices. The frontend team is based in Poland, while the rest of the product team is in Sweden -so you’ll work closely with a local FE team while collaborating across the wider organisation. We’re looking for a proactive frontend developer with hands-on experience in React, who is comfortable writing tests (including E2E), and can work independently in a modern stack -while continuing to grow in a supportive, high-standard environment. 👉 You don’t need to tick every single box -if most of this sounds like you, we’d love to talk. Day-to-day responsibilities • Build new features and complex UI components using React / TypeScript / Next.js (App Router) • Develop and improve components within our shared design system (Tailwind + Radix / shadcn/ui), with documentation in Storybook • Write and maintain E2E tests in Playwright (an important part of the role) • Write unit and integration tests (Vitest + React Testing Library) • Work with REST / GraphQL APIs, debug issues across the stack, and participate in code reviews • Use AI coding assistants (Claude, Cursor, etc.) to speed up development and improve code quality Must-have requirements • Solid JavaScript / TypeScript skills -you write clean, type-safe code • Practical experience with React (commercial or strong personal projects) • Good understanding of HTML/CSS and responsive design • Experience working with REST and/or GraphQL APIs • Experience writing unit tests (e.g. Vitest / Jest + React Testing Library) • Some hands-on experience with E2E testing (Playwright or similar tools like Cypress) • Comfortable working with Git (branches, PRs, rebasing, code reviews) • Communicative English (written and spoken) • Ability to deliver working features independently Nice-to-have (not required, but a plus) • Experience with Next.js App Router in real-world projects • Monorepo experience (Turborepo, Yarn workspaces, etc.) • Familiarity with TanStack Router, react-hook-form, Auth0, or i18n solutions • Experience working with design systems or component libraries (Radix, shadcn/ui, Headless UI) • Storybook experience • Exposure to AI-assisted coding in real workflows What we offer • Work with a modern, up-to-date stack -no legacy code, no outdated libraries • 1:1 mentoring and thorough code reviews from experienced developers • A modern environment with room to experiment (including strong AI usage) • Real ownership over features and product areas • No crunch, flexible working hours, fully remote setup • Clear growth path -from feature/E2E contributor to broader frontend ownership

🏢 Summary: Senior Backend Developer role focused on building and maintaining CIAM microservices using Node.js and TypeScript for an IoT and asset management platform. The position involves designing cloud-native solutions on AWS, developing internal IAM services, and ensuring high security and reliability standards. Work includes test automation, CI/CD, and collaboration within small, autonomous agile teams. 🗂️ Requirements: Minimum 5 years of backend or full stack development experience, Recent commercial experience with TypeScript and NodeJS, Experience with at least one additional backend language (Java or Python), Experience in test automation including system, performance, smoke, and E2E tests, Practical experience with Jest, Postman, or Playwright, Experience designing and developing microservices, Experience building cloud-native applications on AWS, Experience with CI/CD pipelines, Experience working with distributed and asynchronous systems, Fluent written and spoken Polish, Fluent written and spoken English 📃 Skills: NodeJS, TypeScript, Java, Python, AWS, Lambda, APIGateway, DynamoDB, EventBridge, Jest, Postman, Playwright, CI/CD, Microservices, CIAM, IAM, Terraform, CDK, Grafana, Prometheus, Loki 🏢 Description: Relout is a place created by ambitious people with a passion for technology. We work for international projects and clients from various industries, helping startups, software houses, and enterprises to transform and scale their businesses. Our mission is to connect best-in-class, passionate engineers with fast-growing digital & technology companies . You’ll be part of the engineering organization with a strong focus on using industry standards and cutting-edge technology.🔥We are currently looking for a Senior Backend Developer (Node.js/TypeScript) willing to join a project for our strategic client – one of the largest manufacturing companies from Sweden, offering IoT solutions and assets management.You will join a development team responsible for CIAM solutions, building ad maintaining  platform for managing user and customer access and permissions. The company is well-established in the market , but even so, the work culture is not like in typical corporations. Teams are small and autonomous , engineers are given extensive freedom of action , and remote-first & async-first approach is promoted (spotify-derived model). The Scandinavian work culture also places a strong emphasis on work-life balance , which is promoted and shared in both the project itself and among rest of Relout teams. 🔷 Responsibilities: 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 🎯 Requirements: 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, w 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 we offer: Flexible contract currency of your choice (PLN/EUR/SEK) Flexible work arrangements and remote work options Professional development and training opportunities Collaborative and inclusive work environment Opportunity to work on cutting-edge technologies and make a meaningful impact in the dairy industry Regular company events and integrations (meetups) Missing anything you like? Luxmed, Multisport? Ask us about it! We guarantee a fast recruitment process. Interviews are completed within two weeks, depending on your availability. Feedback is provided within three days of the interview!Apply now! Join Relout Team today!📢

🏢 Summary: Full Stack JavaScript Developer role focused on building and scaling a complex data processing and analytics platform, covering backend services, frontend applications, and large-scale data pipelines. The position involves developing RESTful APIs, microservices, and modern React applications, while optimizing databases and performance in a cloud environment. The role includes active contribution to architecture, code quality, and production support. 🗂️ Requirements: Strong experience with Node.js (v22+), Experience with Express.js, Solid knowledge of React (v16+), Experience with PostgreSQL and query optimization, Very good understanding of asynchronous JavaScript, Experience designing RESTful APIs, Knowledge of microservices architecture, Understanding of distributed systems, Experience with Jest or Mocha, Experience with Git, Experience with Webpack or Rollup, Understanding of web security best practices, Basic knowledge of AWS and cloud architecture 📃 Skills: JavaScript, Node.js, Express, React, PostgreSQL, REST, Microservices, DistributedSystems, Jest, Mocha, Git, Webpack, Rollup, AWS, SQL, Async/Await, Promises 🏢 Description: Full Stack JavaScript Developer (Node.js / React) About CRIF CRIF is an international company providing credit and business information services, data processing, and advanced decisioning solutions. We support financial institutions, insurers, utilities, and enterprises with reliable data, analytics, and secure, scalable technology platforms. WBO (White Blue Ocean) is CRIF’s personal and cyber security division focused on advanced monitoring of the Open and Dark Web. Using AI and machine learning, it identifies leaked, stolen, or exposed data and delivers proactive alerts for individuals and companies. Role Overview We are looking for an experienced Full Stack JavaScript Developer to join the WBO team and help build a complex data processing and analytics platform, covering backend services, frontend applications, and large-scale data pipelines. Key Responsibilities Design, develop, and maintain scalable backend services using Node.js Build modern, responsive web applications with React Develop and maintain RESTful APIs and microservices Implement and optimize data processing pipelines (ETL, streaming) Design and optimize PostgreSQL databases and complex queries Implement authentication and authorization mechanisms (JWT, ACL) Optimize application performance and data processing efficiency Write and maintain unit and integration tests Participate in code reviews and ensure high code quality Deploy and maintain applications in an AWS cloud environment Troubleshoot production issues and implement sustainable solutions Collaborate with the team on architecture and technical decisions Document technical solutions and API specifications Required Skills & Experience Strong experience with Node.js (v22+) and Express.js Solid knowledge of React (v16+) Experience with PostgreSQL and query optimization Very good understanding of asynchronous JavaScript (async/await, Promises) Experience designing scalable RESTful APIs Knowledge of microservices and distributed systems Familiarity with testing frameworks (Jest, Mocha) Experience working with Git and modern build tools (Webpack / Rollup) Understanding of web security best practices Basic knowledge of AWS and cloud architecture concepts Nice to Have Experience with AWS Lambda, S3, Athena, CloudWatch Docker and CI/CD pipelines (e.g. Jenkins) TypeScript, Redis, Bull, Socket.io Python or Rust for performance-critical components Experience working with and modernizing legacy systems What We Offer CONTRACT OF EMPLOYMENT Remote work model Work on large-scale, data-driven systems in an international environment Real impact on system architecture and technology decisions Modern tech stack and strong engineering culture Cooperation with experienced and supportive teams Competitive salary aligned with your experience (salary range will be shared during the first interview)