Senior Java SWE - 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".