Fullstack Engineer

London
5 days ago
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Full‑Stack Engineer (FX Trading Applications)

Location: London (onsite 3 days per week)
Day Rate: £700 (via Umbrella Company)
Contract: Fixed Term Contract until 31 December 2026

About the Role

Are you ready to dive into the dynamic world of FX Trading technology?
Our client is seeking a talented Full‑Stack Engineer with strong Java expertise and a passion for solving complex technical challenges. You'll play a key role in building mission‑critical components that power high‑performance trading systems-working closely with cross‑functional teams in a fast‑paced, agile environment.

Key Responsibilities

Engineering & Development

Design and develop backend and frontend features for FX Trading applications.
Write well‑designed, testable, and efficient code across the full stack.
Build automated test suites (unit, integration, contract, UI/API, performance).
Define metrics and implement automated evaluation and drift detection for AI‑related components.
Reduce technical debt while improving modularity, observability, reliability, and performance.

Architecture & Integration

Integrate software components into cohesive, production‑ready systems.
Design clear, maintainable API contracts and ensure backward‑compatible changes.
Optimise low‑latency, high‑throughput services.

Operational Excellence

Troubleshoot, debug, and enhance existing systems.
Instrument services with metrics, logs, and traces for faster incident resolution.
Participate in deployments in line with strict change‑control processes.
Champion production‑ready development through CI/CD gates, feature flags, and safe rollout/rollback strategies.

Collaboration & Continuous Improvement

Partner with Product, Sales, Trading, Operations, and Data Science teams to deliver business‑aligned features.
Participate in peer reviews while promoting secure coding and performance best practices.
Recommend improvements in architecture, tooling, developer experience, and testing strategy.
Contribute to a culture of engineering excellence and innovation.

About You

You're an engineer who thrives in agile, collaborative environments and enjoys building systems that genuinely influence business outcomes. You bring strong Java expertise, familiarity with Spring/Spring Boot, and a solid understanding of RESTful APIs and microservices. Experience with Kafka, SQL, and frontend technologies like Angular or React will help you shine.
And if you have exposure to AI or Machine Learning, even better-that's a bonus our client truly values.

Qualifications

Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience).
5-9 years of hands‑on professional software development experience.
Experience in financial services-particularly within FX Trading-is highly desirable.
Strong communication skills and proven success working in agile, cross‑functional teams.

Join the Team

Join a vibrant, forward‑thinking engineering group dedicated to pushing the boundaries of technology in financial services. If you're excited to build mission‑critical systems that elevate trading performance and user experience, we want to hear from you.

Apply now and take the next step in your engineering career!

Pontoon is an employment consultancy. We put expertise, energy, and enthusiasm into improving everyone's chance of being part of the workplace. We respect and appreciate people of all ethnicities, generations, religious beliefs, sexual orientations, gender identities, and more. We do this by showcasing their talents, skills, and unique experience in an inclusive environment that helps them thrive.

We use generative AI tools to support our candidate screening process. This helps us ensure a fair, consistent, and efficient experience for all applicants. Rest assured, all final decisions are made by our hiring team, and your application will be reviewed with care and attention.

Due to the high volume of applications we receive, we are unable to respond to everyone individually. If you do not hear from us within 48 hours of applying, please assume that your application has been unsuccessful on this occasion

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