Senior Full Stack Web Developer (Node.js/React)We are looking for an experienced Senior Full Stack Web Developer to join our team and contribute to the development of modern web applications. The ideal candidate has a strong technical background and hands-on experience with both backend and frontend technologies.This is a full-time, on-site position based in our office in Kraków, Warsaw or Gdańsk. Work schedule: 5 days a week.Responsibilities Design, develop, and maintain scalable web applications using Node.js and React Implement and integrate APIs (REST, GraphQL, WebSockets) and work with high-loaded databases (MongoDB, MySQL, Redis) Apply best practices in coding, testing (TDD), and microservice architecture Collaborate with cross-functional teams to deliver new features and ensure code quality through code reviews Manage version control (Git) and integrate message brokers (RabbitMQ) and containerized environments (Docker, Kubernetes) Requirements 5+ years of commercial experience in web development 3+ years of commercial experience with Node.js 3+ years of commercial experience as a Frontend Engineer (React) Experience with NextJS, NestJS, Apollo, Material UI Knowledge of TypeScript Commercial experience with high-loaded SQL or NoSQL databases Familiarity with REST, GraphQL, WebSockets Understanding of TDD principles and ability to write tests Knowledge of microservice architecture principles Experience with Git version control system Background in RabbitMQ Skills in Redis Experience with MongoDB and MySQL databases At least an upper-intermediate level of English We offer We gather like-minded people: Engineering community of industry professionals Friendly team and enjoyable working environment Flexible schedule and opportunity to work remotely within Poland Chance to work abroad for up to 60 days annually Business-driven relocation opportunities We provide growth opportunities: Outstanding career roadmap Leadership development, career advising, soft skills, and well-being programs Certification (GCP, Azure, AWS) Unlimited access to LinkedIn Learning, Get Abstract, Cloud Guru English classes We cover it all: Stable income (Employment Contract or B2B) Participation in the Employee Stock Purchase Plan Benefits package (health insurance, multisport, shopping vouchers) Strategically located offices featuring entertainment and relaxation zones, table tennis and football, free snacks, fantastic coffee, and more Referral bonuses Corporate, social and well-being events Please, note: The set of bonuses might vary based on the role you apply for – specifics will be discussed with our recruiter during the general interview We will reach out to selected candidates exclusively EPAM is a leading global provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.