Junior / Mid Full Stack Developer (Java) | Buy-Side Trading

Mayfair, London (Hybrid – 2–3 days onsite)

£60,000–£65,000 + Discretionary Bonus

The Opportunity

We’re working exclusively with a high-growth buy-side quantitative fund building a next-generation electronic FX (eFX) trading engine.

This is a rare chance to join at a critical stage — their proprietary trading platform is going live, with £100m+ AUM already committed, and they’re looking for a developer to help push it over the line and scale it further.

You’ll be joining a small, highly experienced team (ex-tier 1 investment banks) where your work will directly impact live trading systems from day one.

The Role

This is a hands-on full stack position with a strong backend focus in Java.

You’ll contribute to core trading infrastructure while also gaining exposure across cloud, DevOps, and frontend components — ideal for someone early in their career looking to accelerate quickly in a high-performance environment.

What You’ll Be Doing

• Developing core components of a live trading system (order management, execution, strategy tooling)
• Contributing across backend and frontend development
• Building dashboards and analytics tools
• Working on AWS cloud infrastructure and deployment pipelines
• Collaborating closely with a Senior Developer and Head of Electronic Trading
• Owning meaningful parts of the system as it scales

Tech Stack

• Java (core language)
• Spring Boot, REST APIs
• AWS (EC2, S3, CodeDeploy)
• Docker, Kubernetes, Terraform
• CI/CD pipelines
• Monitoring: Prometheus, Grafana

What We’re Looking For

• Strong foundation in Java (non-negotiable)
• ~1–3+ years commercial experience (or strong junior profile)
• Experience with Spring Boot and APIs
• Exposure to cloud / DevOps tooling
• Strong problem-solving ability and curiosity
• Interest in financial markets or trading systems

Nice to have:

• Exposure to low-latency or real-time systems
• Any experience within FX, trading, or fintech environments

Why Join?

• Work on a live trading system from day one
• Direct exposure to buy-side trading and eFX infrastructure
• High ownership in a lean, elite team
• Fast progression as the fund scales
• Bonus directly linked to impact (especially infrastructure delivery)
• Private healthcare + gym membership

If you’re looking to break into buy-side trading and work on genuinely impactful systems early in your career, this is a standout opportunity.