Senior FX e Trading Java Developer

Role Overview

Job Title: Senior FX e-Trading Java Developer

Location: Hybrid - 4 days onsite per week in London

Contract Type: Contract

Duration: 12 months initial

Rate: £ per day Inside IR35

About the role

• Contribute to a new, cutting-edge, low-latency FX e-trading platform - delivering high-performance, resilient, and secure systems.
• Partner closely with product, trading, and infrastructure teams to deliver features end-to-end-from UI and desktop container experiences to low-latency Back End services.
• Lean into the latest AI coding tools to accelerate delivery, strengthen code quality, and enhance developer experience.

What you'll do

• Architect and implement scalable, event-driven, and microservices-based Back End components, including APIs, market data, order/risk workflows, and Real Time streaming.
• Optimize latency, throughput, and reliability across the stack; instrument observability (metrics, tracing, logging) and performance profiling.
• Establish engineering best practices: code standards, testing strategies (unit/integration/E2E), CI/CD, secure coding, and release management.
• Mentor engineers through code reviews, design sessions, and hands-on pairing-encouraging thoughtful abstractions, clean architecture, and pragmatic delivery.
• Use AI development tools for assisted coding, refactoring, test generation, secure code analysis, documentation, and knowledge search-evaluating where AI accelerates while maintaining human oversight.
• Collaborate with stakeholders to translate trading requirements into robust technical designs; write clear specs and implementation plans.

What we're looking for

• Professional software engineering experience, with deep expertise in:
• Core Java, multithreading/concurrency, performance tuning.
• Experience with low-latency design and patterns.
• Designing and operating distributed systems (microservices, event-driven architectures, messaging/streaming).
• Strong understanding of computer science fundamentals (data structures, algorithms, concurrency, networking, OS).
• Proven experience in e-trading or Real Time financial systems (FX highly desirable), including familiarity with market data, order flows, and execution workflows.
• Hands-on with CI/CD, containerization, cloud/on-prem deployments, and observability.
• Comfortable integrating AI coding tools into daily development workflows.
• Excellent communication and stakeholder engagement; able to lead initiatives and mentor others.

Nice to have

• Solace