Fullstack Developer - Backend background (he/she)

🏢 Summary: Short-term B2B contract for a Fullstack Developer (Node.js + TypeScript) to build and maintain backend services for a regulated digital capital market platform in the fintech domain. The role focuses on developing scalable APIs, integrating KYC/AML providers, and implementing authentication, authorization, and investor management features. The project emphasizes code quality, security, and collaboration with cross-functional teams. 🗂️ Requirements: 3+ years commercial experience with Node.js, Strong knowledge of TypeScript, Experience building REST APIs, Experience with NestJS or similar framework, Experience with Prisma ORM or similar ORM, Understanding of authentication and authorization, Experience with relational databases, Experience writing automated tests, Knowledge of clean code principles, English for daily communication 📃 Skills: Node.js, TypeScript, NestJS, Prisma, REST, SQL, Jest, Supertest, Authentication, Authorization 🏢 Description: Description We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 17 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation. FULLSTACK DEVELOPER B2B: 80-100 PLN / hour START - 1 JULY TERM - 6 WEEKS LOCATION: POLAND (REMOTE) *We offer a hybrid work model, allowing you to balance office presence with remote work. However, it's important to note that the role emphasizes a stronger presence in the office to foster teamwork and effective communication. Requirements Key Duties and Services: A Roadmap to Your Professional Success Your Mission : We are looking for a Fullstack Developer (Node. js + TypeScript) to join a fintech project focused on building a regulated digital capital market platform. The system supports investor onboarding, KYC/AML verification, investor classification, access control, audit logging, and digital wallet infrastructure. You will work closely with senior engineers and architects to build scalable backend services and integrations with fintech and blockchain-related providers. Scope of services: Developing and maintaining backend services using Node. js + TypeScript Building and extending REST APIs for onboarding, authentication, and user management Integrating external KYC/AML and identity verification providers Implementing business logic for investor classification and access control Creating and maintaining database models using Prisma ORM Writing unit and integration tests (Jest, Supertest) Participating in code reviews and technical discussions Collaborating with frontend, mobile, QA, and product teams Supporting code quality, security, and system reliability Here’s the set we are required: 3+ years of commercial experience with Node. js backend development Strong knowledge of TypeScript Experience building REST APIs and backend systems Experience with NestJS or similar frameworks Experience with Prisma ORM or similar Understanding of authentication & authorization concepts Familiarity with relational databases Experience writing automated tests (Jest, Supertest or similar) Strong understanding of clean code principles and best practices Good communication skills and English for daily cooperation Nice to have: Experience with class-validator / DTO-based validation Familiarity with GraphQL (Apollo) Experience in fintech / banking / regulated environments Knowledge of KYC/AML processes Exposure to blockchain, wallets, or digital assets Career Advancement at Your Fingertips: Explore Opportunities with Us By joining us you will get: Work on a modern fintech platform with real regulatory requirements Collaboration with experienced senior engineers and architects Opportunity to work with KYC/AML, identity systems, and fintech integrations Influence on system design and backend architecture decision A strong engineering culture focused on quality, security, and scalability Navigating the Hiring Process: What does the recruitment process for that position look like? HR Screening with Talent Acquisition Specialist (30 min) Technical Interview (60 min) Interview with Delivery Manager (30 min) Job Offer

🏢 Summary: Remote Fullstack Developer role focused on building and maintaining scalable, event-driven backend systems for digital advertising platforms using Node.js and NestJS. The position involves designing distributed architectures, optimizing performance, and working with AWS services and NoSQL databases. Long-term collaboration with participation in full software development lifecycle and system observability. 🗂️ Requirements: Minimum 5 years of commercial programming experience, Minimum 5 years of commercial experience with Node.js, Very strong knowledge of Node.js and TypeScript, Practical experience with NestJS or Fastify, Experience with MongoDB and Redis, Experience with AWS services, especially S3, Experience designing event-driven distributed systems, Experience with performance optimization and production systems maintenance, Experience with Git/GitHub and CI/CD processes, Knowledge of JavaScript (OOP and functional programming), Polish language at minimum C1 level, English language at minimum B2 level 📃 Skills: Node.js, TypeScript, NestJS, Fastify, MongoDB, Redis, AWS, S3, JavaScript, Git, GitHub, CI/CD, Babel 🏢 Description: O Grupie Astek Założona w 1988 roku we Francji Grupa Astek jest światowym partnerem w obszarze doradztwa inżynieryjnego oraz IT. Dzięki swojej wiedzy specjalistycznej w wielu sektorach przemysłowych i technologicznych, Astek wspiera międzynarodowych Klientów w rozwijaniu i wdrażaniu produktów oraz usług, jednocześnie uczestnicząc w ich transformacji cyfrowej. Grupa Astek od momentu powstania opiera swój rozwój na kulturze przedsiębiorczości i innowacyjności oraz na budowaniu umiejętności swoich ponad 10 000 pracowników, którzy codziennie uczestniczą w zróżnicowanych projektach technologicznych i inżynieryjnych. Dołącz do silnie rozwijającej się we Francji i na całym świecie Grupy, której obroty w 2024 r. wyniosły 705 milionów euro. Zapraszamy na https://astek.net po więcej szczegółów. Stanowisko Obecnie dla naszego klienta z branży mediowej poszukujemy kandydata/kandydatki na stanowisko Fullstack Developera/ki. Dodatkowe informacje Tryb pracy: zdalny z 1 dniową wizytą w biurze w miesiącu (Kraków lub Warszawa). Oferowane wynagrodzenie Wynagrodzenie: od 1000 do 1100 PLN netto/dzień, w zależności od posiadanego doświadczenia i kompetencji. Sprawdzisz się w tej roli, jeżeli: Masz minimum 5 lat doświadczenia w programowaniu oraz co najmniej 5 lat pracy komercyjnej z Node.js Bardzo dobrze znasz Node.js i TypeScript w kontekście budowy skalowalnych backendów Masz praktyczne doświadczenie z NestJS lub Fastify Pracowałeś z MongoDB, Redis oraz usługami AWS (w szczególności S3) Projektujesz i rozwijasz systemy rozproszone oparte o architekturę event-driven Masz doświadczenie w optymalizacji wydajności, monitoringu oraz utrzymaniu systemów produkcyjnych Swobodnie korzystasz z Git/GitHub oraz rozumiesz procesy CI/CD Znasz JavaScript (OOP i funkcyjnie) oraz narzędzia typu Babel i dobre praktyki projektowe Potrafisz analizować problemy, dekomponować zadania i aktywnie proponować usprawnienia (w tym R&D) Znasz język polski na poziomie min. C1 Znasz język angielski na poziomie min. B2 Mile widziane: Wiedza z obszaru digital advertising / programmatic advertising. Znajomość React.js i baz danych NoSQL. Swobodne poruszanie się w środowiskach unixowych, w tym pisanie skryptów w bash. Znajomość narzędzia Jenkins. Znajomość metodyk Agile / Scrum / KANBAN. Znajomość Datadog. Znajomość frameworków do testów, takich jak Jest, Jasmine, Karma, Cypress. Umiejętność pisania testów jednostkowych, funkcjonalnych oraz integracyjnych. Zadania, które na Ciebie czekają: Rozwój i utrzymanie aplikacji backendowych w Node.js i NestJS dla systemów reklamy cyfrowej i identyfikacji użytkowników Projektowanie i rozwijanie architektury systemów rozproszonych opartych o event-driven design Tworzenie, utrzymanie i optymalizacja wydajności aplikacji oraz usług backendowych Współpraca przy projektowaniu nowych funkcjonalności i kierunków rozwoju ekosystemu reklamowego (R&D) Udział w pełnym cyklu wytwarzania oprogramowania: od analizy wymagań po wdrożenie i monitoring Rozwój i utrzymanie testów jednostkowych oraz współpraca przy automatyzacji testów Tworzenie i rozwijanie systemów monitoringu oraz obserwowalności aplikacji Praca z bazami danych MongoDB i Redis oraz usługami AWS (w szczególności S3) Dekompozycja zadań, analiza problemów i proponowanie rozwiązań architektonicznych Praca z systemami kontroli wersji Git/GitHub oraz stosowanie dobrych praktyk i wzorców projektowych Nasz proces rekrutacji Rozmowa z naszym Rekruterem -> Rozmowa z naszym Business Managerem -> Spotkanie z Klientem W uzasadnionych przypadkach po rozmowie z Rekruterem wprowadzamy dodatkowy etap weryfikacji technicznej Potrzebujesz więcej informacji? Skontaktuj się ze mną: [maciej.sawoch@astek.net] Co oferujemy Długoterminowa współpraca Szkolenia techniczne, certyfikaty i podnoszenie kwalifikacji Mentoring Competence Center - bycie członkiem społeczności CC od pierwszego dnia pracy jest szansą na rozwijanie swoich umiejętności, uczestniczenie w różnych konferencjach oraz dzielenie się wiedzą i doświadczeniem z ludźmi, którzy na co dzień mierzą się z tymi samymi wyzwaniami Jasna ścieżka kariery Pakiet benefitów pracowniczych (Multisport, prywatna opieka medyczna, ubezpieczenie na życie) Przyjazną atmosferę pracy, imprezy integracyjne i spotkania team-buildingowe System rekomendacji Znasz kogoś, kogo zainteresuje ta oferta? Skorzystaj z naszego systemu rekomendacji i zgarnij bonus do 7000 zl! Link: https://astek.pl/system-rekomendacji/ Klauzula informacyjna Administratorem Pana/Pani danych osobowych jest ASTEK Polska sp. z o.o. z siedziba w Warszawie (00-133) przy Al. Jana Pawla II 22. Przysługuje Pani/Panu prawo do wglądu do danych, prawo żądania usunięcia danych itp. Szczegółowe informacje dotyczace przetwarzania: http://astek.pl/polityka-prywatnosci W dowolnym momencie przysługuje Panu/Pani prawo do wycofania wyrażonych zgód. W razie wycofania zgód prosimy o kontakt e-mailowy na adres privacy@astek.net lub pisemnie na adres administratora. Procedura dokonywania zgłoszeń przez sygnalistów w ASTEK Polska sp. z o. o.: https://astek.pl/sygnalisci/ Nr ref AO227042

🏢 Summary: Mid-level Full-Stack Developer role focused on building and modernizing a cloud-based practice management and CRM platform. The position involves a 60/40 split between Angular frontend and Node.js/Nest.js backend, contributing to migration from monolith to microservices and upgrading to the latest Angular version. Fully remote (Poland-based) with strong impact on architecture and product quality. 🗂️ Requirements: 2–3 years of commercial experience in full-stack web development, Commercial experience or strong willingness to work with Angular, Experience with Node.js backend development, Practical knowledge of Nest.js, Basic knowledge of SQL, Experience or willingness to implement automated E2E tests, Polish residency, Working proficiency in Polish, Notice period of 1 month or less 📃 Skills: Angular, Node.js, Nest.js, SQL, Playwright, Microservices, Cloud, ORM, E2E 🏢 Description: Position: Full-Stack Developer Location: Remote (Poland-based) Salary: 14500 – 19500 PLN / month Our client is an innovative software company delivering a modern, cloud-based practice management and CRM solution dedicated to professional services. The platform streamlines day-to-day operations, including workload management and automated document generation. The development team is highly autonomous, focused on refactoring their core product from a monolith into scalable microservices, migrating to the newest technology stacks, and fostering an environment with strong developer ownership. We are looking for a mid-level Full-Stack Developer (approx. 2–3 years of commercial experience) to join a tight-knit Polish development team. In this role, you will work on both frontend and backend tasks (approx. 60% Front-End and 40% Back-End workload), having a real impact on technology choices and product quality. Requirements: Around 2–3 years of commercial experience in full-stack web development. Professional experience or strong openness to working with Angular (the project is currently on Angular 6 and undergoing a migration to the latest stable version). Solid knowledge of backend development using Node.js, preferably with Nest.js (used for all new microservices). Basic understanding of SQL (complex queries are supported by in-house ORM and AI tools, backed by thorough code reviews). Familiarity with or interest in testing practices (manual testing with beta users and expanding automated E2E tests using Playwright ). Polish residency and working proficiency in Polish (mandatory for active participation in daily sync meetings). Notice period of 1 month or less . Mindset focused on autonomy, taking ownership of tasks, and willingness to challenge the status quo. Responsibilities: Developing new features and maintaining the cloud-based platform (60% FE / 40% BE split). Actively participating in architecture modernization (refactoring the monolith into microservices and migrating the legacy frontend to the latest Angular version). Writing clean, maintainable code and participating in peer code reviews. Ensuring software quality through self-testing and implementing automated E2E test scenarios with Playwright. Onboarding smoothly into the codebase (handling smaller bug fixes and minor features in Month 1, progressing to designing and delivering a major complex feature by Month 3). Attending daily team synchronization meetings (at 10:00 AM Polish time). Offer: Salary: 14500 – 19500 PLN / month (depending on experience). Contract type: Long-term B2B Contract (open to both permanent-like cooperation and 12-month fixed contracts). Working model: 100% Fully Remote work. Flexible working hours (with core presence during the 10:00 AM daily sync). Hardware: Company-provided laptop and necessary equipment. No on-call duties or weekend shifts. Great culture: High levels of engineering autonomy, flat structure, and direct impact on the final product. Fast recruitment process: 3 stages (1h Live Coding data processing task $\rightarrow$ ~3h Homework assignment $\rightarrow$ 1h final CTO interview) with rapid feedback provided within 1–2 business days after each stage.

🏢 Summary: Fullstack Developer role focused on building and maintaining backend services in Node.js and frontend applications in React/Next.js, with occasional involvement in smart contract development. The position involves working with databases, APIs, and collaborating across backend and blockchain teams in an onsite environment. The offer is targeted at senior-level engineers with strong production experience. 🗂️ Requirements: Strong Node.js/NestJS backend experience, Minimum 5 years of backend development experience, Minimum 2 years maintaining production applications, Strong React and TypeScript skills, Experience with database and API integration, Ability to work onsite in Warsaw (100%), English level B2 or higher 📃 Skills: Node.js, NestJS, Express, React, Next.js, TypeScript, PostgreSQL, MongoDB, API, EVM, SVM 🏢 Description: About BlockyDevs We build end-to-end applications combining fintech-grade reliability with Web3 innovation. Your Role As a Fullstack Developer, you’ll primarily work with Node.js on the backend, React on the frontend, and occasionally contribute to smart contract development. Responsibilities Develop backend services with *Node.js (NestJS/Express)** Build frontend apps with *React/Next.js + TypeScript** Work with databases (PostgreSQL, MongoDB) and APIs Occasionally contribute to smart contracts (EVM/SVM) Collaborate with design, backend, and blockchain teams Requirements Strong backend skills in Node.js/NestJS At least 5 years of experience in backend applications At least 2 years of experience in maintaining production applications Solid frontend skills in React + TypeScript Database and API integration knowledge Experience mentoring mid/junior developers English at least B2 level Ability to work 100% onsite from our office near Metro Plac Wilsona, Warsaw Nice-to-have Microservices and cloud deployment experience Web3 integrations knowledge Rates (B2B/Freelance) Senior: 120 - 180 PLN/h Recruitment Process 1. Intro Call (30 min) – Quick chat about your experience, expectations, and our projects. 2. Technical Interview / Task – Backend (Node.js) and frontend (React) focus, with some discussion of smart contracts. 3. Final Meeting – Culture/fit + project discussion. 4. Offer – Fast decision if it’s a match. 5. Process usually takes 2–3 weeks . 6. Feedback after each stage within a few days

🏢 Summary: Fullstack Developer role focused on building and developing an e-learning product using modern JavaScript technologies in an international team. The position involves backend REST API development, frontend component creation, and end-to-end feature implementation within an NX monorepo. The offer includes close collaboration with senior engineers and work with AWS-based infrastructure. 🗂️ Requirements: 2–4 years commercial experience as Developer, Very good knowledge of Node.js, Very good knowledge of JavaScript, Commercial experience with TypeScript, Experience with AWS services (Cognito, S3, SQS, Lambda), Experience with relational databases (PostgreSQL, MySQL), Experience with ORM (TypeORM), Ability to write SQL queries, Knowledge of NestJS or Next.js or Express.js, Good knowledge of React, Experience with REST API development, Communicative English (B2) 📃 Skills: JavaScript, Node.js, TypeScript, AWS, Cognito, S3, SQS, Lambda, Aurora, RDS, PostgreSQL, MySQL, TypeORM, SQL, NestJS, Next.js, Express.js, React, REST, NX 🏢 Description: Poszukujemy Fullstack developera , który ma doświadczenie w JavaScript/Node.js i chce się rozwijać w zespole starszych programistów z Polski i USA. Tworzymy dynamicznie rozwijający się produkt e-learningowy z Teksasu. Korzystają z niego amerykańskie instytucje i firmy z wielu branż, m.in., medycznej, usługowej i cybersecurity. Zespół techniczny jest międzynarodowy (5 osób z Polski) i składa się w sumie z ok. 10 osób (CTO, programiści, analityk biznesowy i QA). W tym projekcie na pewno docenisz: możliwość nauki od starszych programistów i CTO rozwój w nowoczesnych technologiach proponowanie własnych rozwiązań i pomysłów (jest czas np. na dopisywanie brakujących testów) zero formalności i polityki: mały, zgrany, wydajny team, który stawia na konkrety i brak korpo-formalności doskonały tooling: nie oszczędzamy na narzędziach i licencjach; dostarczamy wszystko, co jest niezbędne do efektywnej pracy. Zakres obowiązków Rozwijanie backendu REST APIs Tworzenie reużywalnych komponentów Implementowanie rozwiązań end-to-end Znajdowanie i naprawianie bierzących błędów Rozwijanie nowego projektu w NX monorepo Pisanie testów jednostkowych dla backendu przy użyciu AI (AWS Q) Poszukiwane kompetencje 2–4 lata doświadczenia komercyjnego (mile widziane jako Fullstack Developer, ale jesteśmy elastyczni). Bardzo dobra znajomość Node.js oraz JavaScript Doświadczenie komercyjne z TypeScript Doświadczenie z usługami Amazon Web Services, np. Cognito/S3/SQS/Lambda oraz bazami danych Aurora/RDS (PostgreSQL, MySQL lub inne relacyjne). Doświadczenie w pracy z backendem i ORM (np. TypeORM) oraz umiejętność pisania zapytań SQL. Znajomość jednego z frameworków: NestJS, Next.js lub Express.js. Dobra znajomość React / Next.js, w tym strategii renderowania. Angielski na poziomie komunikacyjnym (B2) Dodatkowym atutem będzie: Doświadczenie w pisaniu testów jednostkowych oraz e2e, a także znajomość narzędzi do mierzenia pokrycia kodu testami. Doświadczenie w projektowaniu i korzystaniu z REST API oraz tworzeniu dokumentacji API. Praktyczna znajomość Material UI. Doświadczenie w migracji systemów legacy z wykorzystaniem podejścia Strangler Fig Pattern (stopniowe zastępowanie starego systemu nowym). Certyfikaty AWS (szczególnie Cognito) będą dodatkowym plusem. Oferujemy Elastyczną współpracę full-time. Work-life balance (m.in., płatny urlop, MultiSport, lekcje z native speakerem, becikowe, elastyczne godziny pracy, prywatne ubezpieczenie zdrowotne, eventy sportowe). Przyjazną atmosferę sprzyjającą rozwojowi (program szkoleń, system poleceń, budżet integracyjny, lunche zespołowe i prezenty świąteczne). Wynagrodzenie: 60–80 pln/h netto + VAT (B2B) W określonych sytuacjach dopuszczamy możliwość zawarcia innych form umowy. Pracę zdalną lub z biura (w Krakowie lub Bielsku-Białej, możliwość coworkingu w innych miastach). Proces rekrutacji: 1. Wstępna rozmowa HR (30 min, online) 2. Spotkanie techniczne (45-60 min, online) 3. Finalne spotkanie z teamem US (30-45 min, online) O From Poland With Dev Jesteśmy międzynarodowym zespołem ceniącym rozwijające projekty, relacje międzyludzkie i work-life balance. Pracujemy wyłącznie z klientami z polecenia - dzięki temu nie jesteśmy podwykonawcą i działamy jako “team extension”, będąc pełnoprawnymi członkami projektów. Cenimy pracę blisko biznesu, swobodę i możliwość wpływania na produkt. Minimalizujemy formalności, bo interesuje nas wydajna, merytoryczna praca i rozwój. Brak dystansu, otwartość, zaufanie i ludzkie podejście to filary naszej codziennej pracy. Zapraszamy - aplikuj również bez CV. Napisz do Emilii w razie pytań bądź wątpliwości.

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing performance across backend and frontend systems. You will drive scalable, secure solutions and maintain reliable CI/CD and production environments. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Experience implementing JWT-based authentication, Ability to design scalable and secure architectures, Experience with CI/CD pipelines and Docker, Experience optimizing frontend performance (SSR, lazy loading, state management), Ability to enforce code quality and conduct code reviews 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, Docker, CI/CD, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, SNS, SQS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior FullStack Developer role focused on building and scaling high-performance SaaS web applications using NestJS and NextJS. The position involves leading architecture decisions, ensuring code quality, and optimizing system performance across backend and frontend. The role also drives CI/CD reliability, observability standards, and cross-functional technical alignment. 🗂️ Requirements: 5+ years fullstack development experience, Strong experience with NestJS, Node.js, NextJS, TypeScript, Strong knowledge of PostgreSQL and data modeling, Experience building and consuming REST APIs, Implementation of JWT-based authentication, Experience with CI/CD pipelines, Experience with Docker and environment management, Frontend performance optimization (SSR, lazy loading, state management), Ability to lead architecture decisions and enforce code quality 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover, Storybook, React 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Senior FullStack Developer role in a fast-growing SaaS environment, responsible for designing and delivering scalable, high-performance web applications using NestJS and NextJS. The position involves leading architectural decisions, ensuring code quality, optimizing system performance, and mentoring engineers across cross-functional squads. You will drive backend and frontend development, CI/CD reliability, and production stability in a modern, zero-legacy stack. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, and TypeScript, Strong knowledge of PostgreSQL, data modeling, and optimization, Experience building and consuming REST APIs with JWT authentication, Ability to lead architecture decisions and enforce code quality, Experience with CI/CD pipelines and Docker, Frontend performance optimization experience (SSR, lazy loading, state management), Ability to collaborate in cross-functional teams (product, QA, design) 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Storybook, React, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden

🏢 Summary: Fullstack Developer role focused on building and scaling IoT management systems, e-commerce platforms, and AI-based modules using Node.js and React. The position involves end-to-end software development in an international Agile team, covering architecture, implementation, deployment, and maintenance. The role requires hybrid work from Warsaw and active contribution to high-quality, cloud-based web solutions. 🗂️ Requirements: 3-5 years of commercial fullstack development experience, Proficiency in Node.js, Proficiency in React.js, Strong knowledge of TypeScript, Experience with Next.js, Experience with Express, Practical experience with AWS services (EC2, Lambda, S3, SQS), Ability to design and develop APIs, Experience with MongoDB, Proficiency with Git, Knowledge of CI/CD processes, Good command of English 📃 Skills: Node.js, React.js, TypeScript, Next.js, Express, AWS, EC2, Lambda, S3, SQS, MongoDB, Git, CI/CD, Agile, SCRUM 🏢 Description: Dla naszego klienta poszukujemy kandydatów na stanowisko: Fullstack Developer (Node.js, React) Projekt: 🚀 Rozwój innowacyjnych systemów z obszaru IoT do zarządzania urządzeniami elektronicznymi w przestrzeniach komercyjnych, a także tworzenie platform e-commerce i zaawansowanych modułów bazujących na sztucznej inteligencji ( m.in . rozpoznawanie obrazu) oraz narzędzi automatyzujących procesy QA. Stack technologiczny: 💻 React.js, Node.js, TypeScript, Next.js, Express, ekosystem AWS (S3, Lambda, EC2, SNS, SQS), MongoDB, Git, narzędzia CI/CD Zespół: 👥 Międzynarodowe grono specjalistów (ok. 8-9 osób), budowane dla stabilnej firmy technologicznej z korzeniami w Niemczech. Współpraca opiera się na płaskiej strukturze i dużej otwartości, a w codziennej pracy wspierać Cię będą doświadczeni liderzy techniczni oraz eksperci front-end. Metodyka pracy: 🔄 Agile / SCRUM Model współpracy: 🏢 Praca hybrydowa z biura w Warszawie (2 dni z biura, 3 dni pracy zdalnej) Zakres obowiązków: 🛠️ Aktywne uczestnictwo w pełnym cyklu powstawania oprogramowania – od fazy koncepcyjnej, przez architekturę, aż po wdrożenie i testowanie. Tworzenie, rozwój i utrzymanie skalowalnych rozwiązań webowych przy ścisłej współpracy z resztą międzynarodowego zespołu. Analiza wymagań, estymacja zadań oraz proponowanie nowych narzędzi lub bibliotek, które usprawnią projekt. Dbanie o najwyższą wydajność, niezawodność i jakość tworzonego kodu. Rozwiązywanie złożonych problemów inżynieryjnych. Przekładanie technicznych zawiłości na język zrozumiały dla nietechnicznych współpracowników oraz prezentowanie efektów swojej pracy. Oczekujemy: 🎯 Około 3-5 lat komercyjnego doświadczenia w tworzeniu oprogramowania ze znajomością środowiska backendowego i frontendowego. Biegłości w pracy z technologiami takimi jak: Node.js, React.js, TypeScript, Next.js oraz Express. Praktycznego doświadczenia w korzystaniu z usług chmurowych AWS (w tym m.in . EC2, Lambda, SQS, S3). Umiejętności projektowania API oraz dobrej znajomości baz danych (MongoDB). Biegłości w korzystaniu z systemów kontroli wersji (Git) oraz znajomości praktyk DevOps i procesów CI/CD. Dobrej znajomości języka angielskiego (niezbędna do codziennej komunikacji w zespole). Samodzielności w realizacji zadań, ale też umiejętności świetnej pracy zespołowej i dbałości o detale. Oferujemy: ✨ Zatrudnienie w oparciu o Umowę o Pracę. Prywatną opiekę medyczną (z opcją rozszerzenia pakietu dla bliskich). Dofinansowanie do zajęć sportowych oraz możliwość skorzystania z ubezpieczenia na życie. Kartę lunchową (zasilaną co miesiąc) po zakończeniu okresu próbnego. Elastyczne godziny rozpoczynania pracy (pomiędzy 8:00 a 10:00) i duże zrozumienie dla prywatnych spraw w ciągu dnia. Środowisko stawiające na "learning by doing" z szerokim dostępem do materiałów edukacyjnych i platform szkoleniowych (np. Udemy). Proces rekrutacyjny: 🤝 Rozmowa wprowadzająca: weryfikacja dopasowania do projektu oraz swobody komunikacji w języku angielskim. Wyzwanie techniczne (take-home assignment): praktyczne zadanie programistyczne do wykonania (czas na realizację to 7 dni). O nas Next Technology Professionals to wyspecjalizowana agencja rekrutacyjna i firma outsourcingowa o silnym profilu technologicznym. Od ponad 10 lat wspieramy firmy w budowie zespołów IT, AI, Cybersecurity, SAP oraz w rekrutacjach dla finansów, inżynierii i marketingu. Zrealizowaliśmy ponad 1000 skutecznych procesów rekrutacyjnych dla korporacji, scale-upów i dynamicznie rosnących startupów. Przesyłając swoje CV do Next Technology Professionals, trafiasz do starannie wyselekcjonowanej bazy kandydatów realizujących projekty dla wiodących globalnych organizacji. Pracujemy wyłącznie w oparciu o aktualne, konkretne potrzeby klientów. Jeśli Twój profil będzie odpowiadał jednemu z prowadzonych procesów, skontaktujemy się niezwłocznie.

🏢 Summary: Fullstack Developer role focused on building and maintaining modern web platforms and CMS solutions using Nest.js, React, and Next.js in a hybrid Warsaw-based environment. The position involves developing new features, improving code quality, writing tests, and collaborating with cross-functional teams on scalable web solutions. Candidates will work with modern development workflows, deployment pipelines, and AI-assisted development tools. 🗂️ Requirements: 3+ years of professional web development experience, Strong knowledge of Nest.js, Strong knowledge of Node.js, Strong knowledge of React, Strong knowledge of Next.js, Experience writing clean, maintainable, and testable code, Experience with code reviews and collaborative development, Experience with version control systems, Experience with deployment pipelines, Familiarity with AI-assisted development tools, Professional proficiency in English 📃 Skills: Nest.js, Node.js, React, Next.js, JavaScript, TypeScript, Git, CI/CD, HTML, CSS 🏢 Description: Fullstack Developer Location: Warsaw, Poland (Hybrid – 3 days in the office, 2 days remote) About Consid At Consid, we believe that great technology starts with great people. As one of the fastest-growing IT consulting companies in the Nordics, we help organizations accelerate their digital transformation by delivering innovative, high-quality software solutions. Our teams work on exciting international projects, combining technical excellence with collaboration, curiosity, and continuous learning. About the role We're looking for a Developer for one of our clients to help build new features and improve code quality across a modern web platform and content management systems. In this role, you'll work within established coding patterns, contribute to feature development, participate in code reviews, and continuously grow your technical expertise through mentorship from the Tech Lead and Senior Developers. You'll play an important role in supporting the client's global brand and marketing initiatives by delivering reliable, scalable, and high-quality web solutions. Your responsibilities Build new functionality from specification through to production within established coding standards and development practices. Develop and maintain backend services using Nest.js (Node.js) and frontend applications using React and Next.js . Investigate, troubleshoot, and resolve bugs while maintaining the existing codebase. Participate in peer code reviews, learn from feedback, and contribute to improving code quality. Write unit and integration tests while following established QA and testing practices. Work with version control systems and deployment pipelines throughout the development lifecycle. Utilize AI-assisted development tools and workflows to accelerate learning, improve productivity, and enhance software quality. Collaborate closely with the Tech Lead, Senior Developers, and cross-functional teams to deliver high-quality solutions. Requirements 3+ years of professional web development experience. Strong foundation in Nest.js (Node.js) for backend development and React / Next.js for frontend development. Experience writing clean, maintainable, and testable code. Experience working within code review disciplines and collaborative development environments. Comfortable working with version control systems and deployment pipelines. Familiarity with AI-assisted development and openness to using AI tools to accelerate development and improve productivity. Strong problem-solving and communication skills. Professional proficiency in English. Recruitment Process 1.  Screening Call (30 min): A short introductory conversation with our recruitment team to discuss your background, motivation, and role expectations. 2. Cultural Fit Interview: A meeting focused on collaboration style, communication approach, and how you operate in an international environment. 3.  Technical Interview: A deeper technical discussion covering data architecture, analytics engineering, and HR data topics, including a hands-on deep dive relevant to day-to-day responsibilities. 4.  Final Interview (45 min): A concluding conversation focused on behavioural aspects, leadership and ownership mindset, and managerial alignment.