Java Engineer - Market Data & RTSDK Migration (Hybrid)

CBSbutler Holdings Limited trading as CBSbutler; Greater London; Hybrid; GBP 85,000 - 110,000; Full time

Benefits offered by this job

Hybrid work arrangement

Job summary

CBSbutler is seeking a seasoned Java Engineer to join a London-based market data project, focusing on migrating from LSEG/Refinitiv RFA to RTSDK. You will analyse existing data usage, map features to RTSDK, and contribute to a high-performance, low-latency trading platform.

The role offers a London hybrid working pattern (3 days on-site) and a salary range of £85k–£110k, with strong emphasis on testing, code quality and collaboration with the trading desk.

Qualifications

• Experience with Futures & Options market data, especially LSEG/Refinitiv.
• Proven Java development in electronic trading environments.
• Strong understanding of market data, exchange feeds and trading workflows.

Responsibilities

• Analyse existing RFA market data usage and map functionality to RTSDK.
• Assess differences in market data fields and behaviour across 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-powered development tools to improve coding, testing and productivity.

Skills

Futures & Options market data

Java development

Low-latency processing

Market data workflows

Automated testing (TDD)

Performance & scalability

AI-assisted development tools

Tools

RTSDK

LSEG Refinitiv RFA API

Job description

CBSbutler is seeking a seasoned Java Engineer to join a London-based market data project, focusing on migrating from LSEG/Refinitiv RFA to RTSDK. You will analyse existing data usage, map features to RTSDK, and contribute to a high-performance, low-latency trading platform.

The role offers a London hybrid working pattern (3 days on-site) and a salary range of £85k–£110k, with strong emphasis on testing, code quality and collaboration with the trading desk.