Java Engineer - Market Data
CBS Butler · London, United Kingdom ·
- Employment
- Contract
- Category
- Software engineering
- Salary
- GBP 85,000 – 110,000 / year
Java engineer on a futures algorithmic trading platform, migrating market data code from the legacy LSEG/Refinitiv RFA API to RTSDK. Day to day: analysing existing RFA usage, updating Java applications and shared frameworks, running regression/automated tests. London-based, hybrid 3 days per week.
Java Engineer - Market Data - LSEG/RTSDK Migration
Permanent
London - Hybrid 3 days per week
Salary - £85K - £110K
We 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 & 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 testing.
- Familiarity with AI-powered development tools.
- Strong analytical, problem-solving and communication skills.
It would be an added advantage if you had any of the following:
- Previous RFA-to-RTSDK migration experience.
- Experience with low-latency trading and Real Time market data systems.
- Knowledge of Futures market structure, exchange connectivity and market data normalisation.
- Experience developing shared frameworks or platform libraries.
CBSbutler is operating and advertising as an Employment Agency for permanent positions and as an Employment Business for interim/contract/temporary positions. CBSbutler is an Equal Opportunities employer and we encourage applicants from all backgrounds.