Senior Java Software Engineer - Financial Markets

ING Hubs Poland is hiring! The expected salary for this position: 9 600 - 16 000 PLN - Engineer III 13 000 - 22 000 PLN - Engineer IV The financial ranges specified in the announcement are adjusted and may differ from the range specified in the remuneration regulations. Work environment Join a high-impact engineering team delivering cutting-edge solutions for Financial Markets . We build systems used daily by sales teams, traders, and risk managers across global hubs: London, Amsterdam, Brussels, New York, and Singapore . Our focus is on derivative products across multiple asset classes (equities, commodities, interest rates). You will contribute to platforms that automate the full trading lifecycle - from client quote requests to pricing, booking, and risk management - in highly dynamic, real-time environments. This is a unique opportunity to work at the intersection of technology, finance, and global collaboration , where your work directly influences business decisions. Your responsibilities: Design and develop robust backend services and expose them via modern REST APIs Continuously improve architecture, scalability, and infrastructure , including CI/CD pipelines Enhance performance, reliability, and system resilience in production environments Collaborate closely with business experts, traders, and quants to deliver complex features Apply and promote high-quality engineering practices , including automated testing Proactively identify, troubleshoot, and resolve issues , ensuring long-term stability We are looking for you, if you have: MSc in Computer Science or equivalent practical experience 5+ years of experience building and maintaining production-grade software Strong foundations in algorithms, data structures, design patterns, and concurrency Proven ability to build modular, testable, and maintainable systems Hands-on expertise in Java, Spring Boot, Git, and SQL Strong analytical thinking and a problem-solving mindset Good command of English (written and spoken) readiness to travel to Belgium You'll get extra points for: Knowledge of equity derivatives or trading concepts Experience in financial markets or fintech environments Familiarity with market data providers and APIs (e.g., LSEG / RFA, Bloomberg B-Pipe) The role naming convention in the global ING job architecture will be “Engineer III" or "Engineer IV".