Java Engineer

Runtime Group are currently recruiting for a Java (Low Latency Connectivity) Developer to join an Algorithmic Market Making business, who build high‑performance connectivity and trading systems within the digital assets / low‑latency trading space. You’ll work on ultra‑efficient Java components, real‑time market data feeds, and execution workflows - running in a highly optimised Linux environment.

• Build and maintain FIX protocol sessions, market data streams, and order management flows
• Integrate with crypto exchanges via Web Socket and REST APIs
• Design and optimise real‑time market data pipelines
• Support and troubleshoot production systems running on Linux
• Collaborate with engineering, trading, and platform teams on system performance improvements
• Contribute to continuous optimisation, tooling, and architectural enhancements
• Low‑latency Java development with zero‑allocation / minimal‑GC techniques
• Strong knowledge of the FIX protocol
• Web Socket & REST integration for crypto market data and trading
• Json
• Development and application support in Linux
• GIT, JIRA, Agile
• Gradle build tool
• Python
• Parquet
• Event‑sourcing or distributed trading architectures