Senior Java Backend Engineer – Derivatives Trading Platform

ING Hubs Poland; Warszawa; On-site; PLN 60,000 - 90,000; Full time

Job summary

ING Hubs Poland is seeking an experienced engineer to join their high-impact team focused on delivering innovative solutions for Financial Markets. The selected candidate will design robust backend services and enhance system resilience, collaborating with traders and quants in a fast-paced environment.

A minimum of 5 years of experience in software development is required, with strong skills in Java and Spring Boot. This position offers a chance to work at the intersection of technology and finance in Warsaw, alongside industry experts.

Qualifications

• 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.
• Good command of English (written and spoken).

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

Data structures

Design patterns

Concurrency

Analytical thinking

Problem-solving

Education

MSc in Computer Science or equivalent practical experience

Tools

Java

Spring Boot

Git

SQL

APIs

Job description

ING Hubs Poland is seeking an experienced engineer to join their high-impact team focused on delivering innovative solutions for Financial Markets. The selected candidate will design robust backend services and enhance system resilience, collaborating with traders and quants in a fast-paced environment.

A minimum of 5 years of experience in software development is required, with strong skills in Java and Spring Boot. This position offers a chance to work at the intersection of technology and finance in Warsaw, alongside industry experts.