Java Software Engineer - Financial Markets

Java Software Engineer - Financial Markets

ING Group

Katowice or Warsaw, Poland

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).