Senior Java Trading Systems Developer

A well-established financial markets firm is seeking a Senior Java Trading Systems Developer to support the continued development of its electronic trading technology.This is a hands-on engineering position focused on building and improving systems used to manage orders and trading activity across multiple markets and venues. The successful candidate will work closely with front-office users, quantitative specialists and technology teams to deliver reliable, scalable and high-performance solutions.The role would suit an experienced developer from an electronic trading, capital markets or market-making environment who is interested in joining a growing and technically ambitious business.

Responsibilities

• Design, build and maintain trading systems using Java
• Develop functionality supporting order management, routing and execution
• Work across the full trade lifecycle, from order entry and validation through to execution and downstream processing
• Build scalable, resilient and performance-focused infrastructure
• Collaborate with trading, quantitative and engineering teams to deliver new capabilities
• Contribute to the ongoing development and modernisation of the trading platform
• Support connectivity and workflow requirements across multiple markets and counterparties
• Improve system reliability, performance and operational resilience
• Participate in technical design and architectural decision-making while remaining hands-on

Requirements

• Strong commercial Java development experience
• Experience developing systems within electronic trading or capital markets
• Good understanding of order management and the trade lifecycle
• Background in areas such as equities, foreign exchange, market making, derivatives or digital markets
• Experience with order routing, execution workflows or trading algorithms
• Understanding of market structure and electronic execution
• Experience working closely with front-office and quantitative teams
• Ability to contribute to system design, architecture and implementation

Desirable

• Experience across more than one asset class
• Exposure to high-performance or low-latency systems
• FIX protocol or exchange connectivity experience
• Knowledge of Python, KDB or similar technologies
• Experience developing or modernising a trading platform
• Experience working in a growing, changing or build-focused environment

This is an opportunity to join a high-profile trading technology team and play an important role in the development of a significant electronic trading platform. The position offers meaningful technical ownership and the opportunity to influence future platform capabilities.

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