Back to SearchSenior Fullstack Developer (JS)
Office in Poland: Krakow
JavaScript (Fullstack)
& 7 others
We are looking for a Senior Fullstack Developer (JS) to join our innovative team. This role involves working on projects that propel our business forward and contribute to shaping our tech stack's future. You'll thrive in a cooperative setting where your expertise directly influences our success and product quality.
Responsibilities
- Maintain and develop internal fintech platforms supporting operational workflows
- Design and build new features and improve existing ones from the ground up
- Connect third-party APIs and internal services to ensure integrated and efficient data exchange
- Work in partnership with backend, DevOps, and product teams to deliver high-quality solutions
- Participate actively in SCRUM processes including sprint planning, grooming, and retrospectives
Requirements
- At least 3 years of solid web development experience with a record of launching production-ready apps
- Hands-on backend development experience with Node.js in production
- Proven frontend development skills using React for dynamic interfaces
- Experience with Next.js for server-side rendering and NestJS for backend scalability
- Proficient with Apollo for GraphQL data handling and Material UI for responsive design
- Strong TypeScript skills for writing maintainable, robust code
- Experience managing SQL or NoSQL databases under load with focus on data integrity and speed
- In-depth knowledge of REST, GraphQL, and WebSockets for building APIs and real-time features
- Practiced in Test-Driven Development (TDD) and automated testing to ensure code quality
- Familiarity with microservices architecture to build scalable, maintainable systems
- Experienced user of Git, RabbitMQ, Redis, MongoDB, and MySQL
- Good English communication skills at B2+ level with client and stakeholder interaction experience
Nice to have
- Experience with CI/CD tools, Kubernetes, and Docker for automated deployments and container management
- Background in building microservices and container-based applications for scalable solutions
- Knowledge of queue brokers such as RabbitMQ, Kafka, or similar for asynchronous communication and processing