Senior Node.js Developer w Poland, Kraków

We're looking for a Senior https://jobeax.com/link/JSd7UYCSg572jJDY Developer to join our team in Gdansk/Krakow, Poland, in a hybrid working mode (3 days from the office). In this role, you will contribute to the design and development of front-end solutions, microservices, and REST APIs, leveraging modern technologies and best practices. You will also play a key role in analyzing legacy systems, defining architecture for transformation projects, and collaborating with cross-functional teams to drive business value. Responsibilities Design and develop scalable front-end applications, microservices, and REST APIs Analyze existing legacy applications and define a target state architecture for modernization Implement and optimize solutions within a cloud environment using AWS services Ensure performance, security, and reliability across applications and services Work collaboratively in an Agile setting, engaging with cross-functional teams and stakeholders Contribute to code reviews and establish engineering best practices Use testing frameworks and monitoring tools to maintain product quality and stability Communicate effectively with clients and internal teams, providing technical insights and recommendations Requirements 5+ years of experience in software engineering, including https://jobeax.com/link/JSd7UYCSg572jJDY development Strong expertise in JavaScript with practical experience in https://jobeax.com/link/JSd7UYCSg572jJDY Demonstrated experience in designing microservices architecture and building REST APIs Solid hands-on experience with AWS cloud services such as EC2, S3, Lambda, Kinesis, Firehose, DynamoDB, and CloudWatch Knowledge of database technologies including DynamoDB and PostgreSQL (DB2 legacy experience is a plus) Familiarity with TypeScript and Java Understanding of CI/CD, testing practices, and tools such as Cucumber and API testing frameworks Experience working in Agile development environments Excellent communication, client-facing skills, and the ability to manage ambiguity We offer We gather like-minded people:Top tech minds driving innovation in AI, cloud and digital platform modernizationSupportive team and an agile, startup-like cultureHybrid by design mode and opportunity to work remotely within PolandChance to work abroad for up to 60 days annuallyBusiness-driven relocation opportunitiesWe provide growth opportunities:Career development programsThought leadership, mentoring, soft skills and well-being programsCertification (Anthropic, Gemini, GCP, Azure, AWS)English classesWe cover it all:Stable payParticipation in the Employee Stock Purchase Plan with a 15% discountBenefits package (health insurance, multisport, shopping vouchers)Referral bonuses up to $2,000Offices featuring entertainment and relaxation zones, table tennis and football, free snacks, coffee and moreCorporate, social and well-being eventsPlease, note:We will reach out to selected candidates exclusively EPAM is global leader in AI transformation engineering and integrated consulting, serving Forbes Global 2000 companies and ambitious startups. With over thirty years of expertise in custom software, product and platform engineering, we empower our clients to become AI-Native enterprises, driving measurable value from innovation and digital investments.