Mid / Senior Backend Developer (Java)
- Develop and maintain backend services using Java
- Design and optimize SQL-based data models and queries
- Build and expose APIs for data access and integration
- Work with large volumes of structured and unstructured data
- Write unit and integration tests; participate in code reviews
- Collaborate with DevOps and frontend teams to ensure end-to-end reliability
- Contribute to architectural decisions and technical planning
- 5+ years of backend development experience with Java
- You write high-quality code and take pride in doing things properly — youre not afraid to go deep and push for engineering excellence
- Solid knowledge of SQL and relational databases
- Solid knowledge and experience working with Kafka
- Experience with API design and microservices architecture
- Familiarity with cloud platforms and containerization
- Fluent English and a proactive, problem-solving mindset
- Experience with serverless frameworks (e.g., AWS Lambda)
- Exposure to financial or insurance domains is a plus
- Hybrid work model (2 office days/week in a modern workspace in Mokotów are recommended)
- Social benefits (private healthcare, Multisport)
- Flexible working hours and a supportive, collaborative culture
- Join the company at an early stage and grow with it — shaping both the product and your own career path
- Work with passionate experts on a product with real-world impact
- Enjoy a flexible, modern work culture in one of Warsaw’s best districts
- Influence the technology and architecture from an early stage
