Senior Java Developer | Trading Platform

Senior Java Developer– Commodities Trading B2B | Hybrid | Kraków | 2 days per week | Global Investment Bank We are supporting a global financial institution in hiring an experienced Senior Java Engineer for its Commodities technology team. The role focuses on building and improving front‑office trading systems used across global markets, with an emphasis on performance, reliability, and real‑time processing. Role Overview • Develop and support front‑to‑back trading systems, including exchanges, client portals, and trade lifecycle components • Build high‑performance Java services used across Commodities and FX trading • Enhance and maintain low‑latency, high‑throughput electronic trading applications • Deliver cross‑product front‑office platforms for pricing, execution, and risk management • Contribute to real‑time risk capabilities across global trading workflows Required Experience • 5+ years’ experience in Java back‑end development • Strong knowledge of HTTPS, REST APIs, microservices, and MQ • Proficiency in SQL and experience with Postgres or Sybase • Understanding of high‑availability service architecture • Experience owning or leading the delivery of Java‑based services • Strong communication skills and ability to work with global teams • Analytical approach, fast learner, and proactive in keeping technical skills current • Ability to remain calm and effective in time‑sensitive situations Preferred Experience • Exposure to production support • Experience with Agile, CI/CD environments • Domain knowledge in trade lifecycle, post‑trade, or FX/Commodities