Java Engineer - Market Data - LSEG/RTSDK MigrationPermanentLondon - Hybrid 3 days per weekSalary - £85K - £110KWe are seeking an experienced Java Engineer with strong market data and electronic trading experience to support the modernisation of a Futures algorithmic trading platform.The role will focus on migrating from the Legacy LSEG/Refinitiv RFA API to RTSDK, analysing existing market data usage, implementing application and framework changes, and ensuring trading functionality and performance remain consistent throughout the transition.Responsibilities:* Analyse existing RFA market data usage and map functionality to RTSDK.* Assess differences in market data fields and behaviour across relevant exchanges.* Develop enhancements to Java applications and shared frameworks to support RTSDK.* Support a phased migration while maintaining compatibility and system stability.* Develop and execute automated, regression and integration testing.* Use AI-assisted development tools to improve coding, testing and productivity.Skills and Experience:* Strong experience with Futures and Options market data, particularly LSEG/Refinitiv.* Proven Java development experience within electronic trading environments.* Good understanding of market data, exchange feeds and trading workflows.* Experience working with complex existing codebases and technology migrations.* Strong focus on performance, scalability and low-latency processing.* Experience with TDD, automated testing and regression ..... full job details .....