Senior Java Engineer – Financial Markets Trading

ING Hubs Poland; Katowice; On-site; PLN 107,136 - 245,520; Full time

Job summary

ING Hubs Poland is seeking an experienced software engineer to design and develop robust backend services for financial markets. You will work on high-impact platforms, implement REST APIs, and improve scalability and CI/CD pipelines in a dynamic, global team across London, Amsterdam, Brussels, New York, and Singapore.

The role requires an MSc in CS or equivalent, 5+ years production-grade software experience, strong Java and Spring Boot skills, and good English.

Qualifications

• 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.

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.

Skills

Java

Spring Boot

Git

SQL

Algorithms & DS

Concurrency

English communication

Education

MSc in Computer Science

Tools

CI/CD

Job description

ING Hubs Poland is seeking an experienced software engineer to design and develop robust backend services for financial markets. You will work on high-impact platforms, implement REST APIs, and improve scalability and CI/CD pipelines in a dynamic, global team across London, Amsterdam, Brussels, New York, and Singapore.

The role requires an MSc in CS or equivalent, 5+ years production-grade software experience, strong Java and Spring Boot skills, and good English.