April 8, 2026

Senior Java Developer – Trading / Financial Platform

Senior • Hybrid

200 - 230 PLN

Warsaw, Poland

About the Role:

We are looking for a Senior Software Developer to join a growing team focused on enhancing and maintaining a high -performance electronic trading platform. You will work on backend components, implement new features, and provide Level 3 production support on a rotational basis. The role offers direct collaboration with trading teams and opportunities to influence platform design and improvements.

Responsibilities:

  • Analyze, design, develop, and document Core Java server-side components

  • Write automated functional and performance tests using Cucumber

  • Provide L3 production support in a rotational schedule (mostly aligned with London business hours)

  • Collaborate with a global team and trading stakeholders

Must Have:

  • 10+ years of experience with Core Java development

  • Experience working on trading platforms or similar real-time systems

  • Java certification preferred or a degree in Computer Science

  • Strong communication skills and ability to work with business stakeholders

  • Experience writing automated functional and performance tests with Cucumber

Nice to Have:

  • Knowledge of ION MarketView Java API

  • Understanding of Fixed Income trading (Dealer-to-Client eTrading of Bonds)

  • Experience with Spring Boot

  • Familiarity with ADO pipelines for build and deployment

  • Experience with REST APIs

Technology Stack:

  • Backend: Core Java, Spring Boot

  • Messaging: Solace

  • Database: Oracle

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