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# Low Latency Java Developer

- **Company:** CMC MARKETS PLC
- **Location:** United Kingdom
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Clean Code Principles, Java (Programming Language), Algorithmic Trading, Software Design Patterns, Memory Management, Financial Information EXchange, High-Frequency Trading, Java Virtual Machine (JVM), Routing, Performance Tuning, Concurrency, Information Technology, Low Latency
- **Published:** November 12, 2026
- **Apply:** https://startup.jobs/senior-front-office-software-engineer-cmc-markets-10741774

## About the Role

If you thrive in performance-critical environments and want your work to have real market impact, we'd love to hear from you., * Strong hands-on Java development experience within low latency financial systems.

 * Deep understanding of performance optimisation, concurrency and JVM internals.
 * Experience working on pricing, risk or electronic trading platforms.
 * Knowledge of FIX protocol, order routing and broker connectivity highly beneficial.
 * Strong mathematical and problem-solving mindset.
 * Experience across asset classes such as FX, Equities, Commodities or Derivatives preferred.
 * Ability to operate calmly in a fast-paced, front-office trading environment.
 * Experience mentoring engineers and influencing technical direction.
 * Minimum 2:1 degree in Computer Science, Mathematics, Physics or another numerate discipline.

## Description

* Develop and optimise high-performance Java (21+) systems for pricing, risk and trading.
 * Build and enhance components within a low latency, high-throughput trading architecture.
 * Apply advanced concurrency, memory management and performance tuning techniques.

System Design & Ownership

 * Take responsibility for designing scalable, resilient and maintainable systems.
 * Contribute to architectural decisions across the trading and risk platform.
 * Build tooling to improve monitoring, maintenance and performance diagnostics.

Trading-Focused Collaboration

 * Work closely with Quants, Financial Engineering, Front Office and Business Operations.
 * Support live trading systems, troubleshooting time-critical production issues.
 * Contribute to the continuous evolution of our electronic trading infrastructure.

Mentorship & Technical Leadership

 * Provide guidance and mentorship to junior developers.
 * Champion engineering best practices, clean code principles and robust design patterns.