Senior Node.js Backend Developer

3 dni temu


Warsaw, Polska GB2B sp. z o.o. Pełny etat

Senior Node.js Backend Developer Miejsce pracy: Warszawa Technologies we use Expected Node.js MongoDB PostgreSQL Redis Kubernetes Docker Kafka AWS Operating system Windows macOS Linux Your responsibilities Develop and maintain high-performance backend services using Node.js (especially Nest.js or Express.js) Design and implement microservice architectures and distributed systems Work on database design, optimization, and performance tuning Efficiently use and manage PostgreSQL, MongoDB, and other relational/NoSQL databases Implement Redis, workers, queues, and caching mechanisms to enhance system efficiency Contribute to load balancing, scalability, and system performance strategies Maintain code quality, perform testing, and ensure solid documentation standards Our requirements Minimum 4 years of professional experience with Node.js (Nest.js / Express.js) Strong knowledge of PostgreSQL and MongoDB Hands-on experience with Redis, workers, and message queues (e.g., Bull, RabbitMQ) Solid understanding of API design, system performance, and scalable architectures Excellent analytical thinking and problem-solving skills Strong team player with good communication skills (Nice to have) Experience in iGaming, fintech, or high-traffic systems English Level has to be B2 What we offer Be part of a growing and innovative iGaming infrastructure company Work with modern technologies and continuously improve your skills Join a motivated, professional, and solution-driven team Competitive salary and benefits package Full-time on-site position – collaborate closely with your team in our office environment About Us At GB2B, we provide cutting-edge infrastructure services for the iGaming industry. We build reliable, high-performance, and scalable systems that power modern gaming experiences. We are expanding our team and looking for solution-oriented, analytical, and collaborative professionals to join us in shaping the future of iGaming technology.


  • Backend Developer

    7 dni temu


    Warsaw, Polska KYOTU Technology sp. z o.o. Pełny etat

    Backend Developer (Node.js/Typescript) Miejsce pracy: Warszawa Technologies we use Expected AWS TypeScript Node.js SQL JavaScript NoSQL About the project We're looking for a Node.js Developer to join our international, cross-functional team. You'll work closely with product managers, designers, and engineers to develop and maintain backend services that...


  • Warsaw, Polska GOLDENORE ITC sp. z o.o. Pełny etat

    technologies-expected : - Java - Node.js - Spring Boot - JavaScript - TypeScript technologies-optional : - React.js about-project : - Dołączysz do zespołu, który buduje i rozwija krytyczne komponenty platformy finansowej działającej globalnie, pracując jednocześnie nad backendem w Javie i TypeScripcie. To rola dla doświadczonych fullstack...


  • Warsaw, Polska Solvd Inc. Pełny etat

    technologies-expected : - Python - PySpark - SQL - PostgreSQL technologies-optional : - Microsoft Azure - MLflow - Databricks Jobs about-project : - We are looking for a Senior Python Backend Developer (MLFlow) to join our team. - Project description - The project consists of building a scalable backend platform that runs data-driven analytical models...


  • Warsaw, Polska BlockyDevs sp. z o.o. Pełny etat

    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...


  • Warsaw, Polska Intent Pełny etat

    We're currently seeking a passionate freelance Senior Backend Developer to join our team ASAP. As a freelancer cooperating with intent, you'll have the opportunity to work on diverse IoT projects, leveraging your expertise in backend and cloud technologies. About intent intent has over 15 years of experience in conceptualizing, designing, and building apps...

  • Senior Node Developer

    4 tygodni temu


    Warsaw, Polska DCG Pełny etat

    Jako firma rekrutacyjna DCG rozumie, że każde przedsiębiorstwo napędzane jest przez doświadczonych specjalistów. Nasz styl zarządzania oraz partnerskie podejście pozwalają nam spełniać Twoje potrzeby i zapewniać ciągłe wsparcie. W związku z naszym nieustającym rozwojem oraz dużą liczbą projektów rekrutacyjnych realizowanych dla naszych...

  • TypeScript Developer

    3 tygodni temu


    Warsaw, Polska MUDITA SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ Pełny etat

    technologies-expected : - Node.js - Nest.js - JavaScript - TypeScript - PostgreSQL - REST - GraphQL - WebSockets - TypeORM - OpenID - Auth0 - Git about-project : - The project scope includes developing a system for publishing and distributing e-ink applications to mobile devices — the Mudita App Store — along with a dedicated developer portal (a...


  • Warsaw, Polska Espeo Software Pełny etat

    Senior Fullstack Developer - Freelancer SKILLS: Node.js | Angular | Auth0 | B2B: PLN 140 - 160 / Hour LOCATION: REMOTE (POLAND) START DATE: 01.12.2025 DURATION: 1 month Key Duties and Requirements: A Roadmap to Your Professional Success Scope of responsibilities: Design, build, and maintain scalable backend services using Node.js Develop APIs and...


  • Warsaw, Polska BSH SPRZĘT GOSPODARSTWA DOMOWEGO sp. z o.o. Pełny etat

    Senior Typescript developer– Node.js / AWS (Home Connect Ecosystem, IoT) Miejsce pracy: Warszawa Technologies we use Expected TypeScript AWS Node.js React.js Docker Optional Go Operating system macOS Linux About the project We are looking for a developer mostly focused on backend working on the Home Connect IoT platform — a mature and widely adopted...

  • Senior Nodejs Developer

    4 tygodni temu


    Warsaw, Polska Lumicode Sp. z o.o. Pełny etat

    Kim jesteśmy? Lumicode Sp. z o.o. należy do Grupy Pentacomp , która jest producentem rozwiązań informatycznych i dostawcą profesjonalnych usług IT dla dużych przedsiębiorstw i sektora publicznego. Jako Pentacomp tworzymy rozwiązania IT łączące innowacyjność z latami doświadczeń - a ich mamy całkiem sporo. Istniejemy na rynku prawie 30 lat i...