Market Data Engineer - Java - Futures and Options - RFA to RTSDKPermanentBased in the CitySalary: 80K - 115K depending on experienceWe are looking for an experienced Market Data Engineer with strong Java development skills and a background in electronic trading to support the modernisation of a Futures Algorithmic Trading platform.This is a hands-on engineering role focused on migrating market data integration from the legacy LSEG/Refinitiv Robust Foundation API (RFA) to the Real-Time SDK (RTSDK), ensuring performance, reliability and existing trading functionality are maintained throughout the transition.Responsibilities: Analyse existing RFA integrations and map market data fields and functionality to RTSDK. Develop and enhance Java applications and shared frameworks to support the migration. Work with Futures and Options market data across supported exchanges. Maintain backward compatibility and ensure minimal disruption to trading workflows. Implement performance optimisation, automated testing, TDD and regression testing. Collaborate with development, QA and business stakeholders to deliver a controlled migration. Explore AI-assisted development tools to improve engineering and testing efficiency.Skills and Experience: 4-8 years hands-on Java development experience. Strong experience with LSEG/Refinitiv market data. Knowledge of Futures and Options market data and electronic trading systems. Experience with real-time market data processing and exchange feeds. Strong ..... full job details .....