Senior Java Developer

Join a fast-growing energy tech company building a core data integration and processing platform for real-time algorithmic trading. You will shape scalable backend services and collaborate with product stakeholders to enable expansion into new markets. This role combines high-performance software with meaningful impact in the European energy transition. You’ll work in an international engineering team that values autonomy, collaboration, and continuous learning. A strong hook: you contribute to a mission-critical system that directly affects commercial outcomes.

• freshly prepared daily lunch
• wellness initiatives
• sports and mobility benefits
• 30 days annual leave
• flexible working hours
• childcare support

• Design and develop backend services in Java
• Build features for a highly available distributed platform
• Integrate with external APIs and real-time data sources
• Maintain reliable, scalable production systems
• Write unit and integration tests
• Participate in code reviews and technical design discussions
• Collaborate with product and business stakeholders
• Produce technical documentation and share knowledge

• 5+ years of software engineering experience
• 3+ years of professional Java development
• Strong understanding of object-oriented design and clean coding
• Experience with multithreading, concurrency, and asynchronous programming
• Experience designing efficient data processing solutions
• Unit and integration testing experience
• Strong English communication skills (B2+)
• Based in Germany with a valid work permit

• team collaboration
• effective communication
• problem-solving
• Java
• Spring Boot
• MySQL