Java Developer
Summary
Build and maintain a high-performance trading data platform, integrating systems and optimizing performance with Java, Kafka, and cloud migration to AWS.
Java Developer – Trading Data| Hybrid 4 days in office | Warsaw
You will:
Develop and maintain scalable, high-performance solutions for trading data platform and trade booking/control systems
Scale the platform and build dashboards to increase platform usage
Collaborate with stakeholders, integrate systems and optimize performance
Work with AI-driven development tools and AI agents
Contribute to the platform's move to the cloud (AWS)
You bring:
5+ years of commercial Java experience (Java 21, moving to Java 25)
Familiarity with other languages such as C++ and Python
Experience with Kafka, Gitlab and monitoring tools (Prometheus/SRE principles)
Database experience (Hazelcast, MongoDB, SingleStore, Spanner)
Experience with Java frameworks (in-house Boltweb; Spring experience beneficial)
Strong verbal and written communication skills