Devonshire Hayes Recruitment Specialists Limited
May 19, 2026
Contractor
If you are a Full Stack Developer with strong UI experience, we have a new 1-year FTC we'd like to discuss with you. This role would be ideal for someone with 3-5 years' experience and requires 3 days per week onsite in The City of London. About the Company A leading global financial services firm specialising in electronic trading and liquidity solutions is undergoing a significant technology transformation. With an established presence across major financial hubs, the business works with top-tier institutional clients and is investing heavily in modernising its trading platforms and infrastructure. This is an opportunity to join a high-performing, collaborative technology team working on cutting-edge, real-time systems within a fast-paced environment. The Role We're looking for a mid-level Full Stack Developer with strong front-end expertise to play a key role in delivering next-generation trading applications. You'll join a small Agile team, working closely with both technology and business stakeholders on greenfield and enhancement projects, with a particular focus on real-time UI development. This role would suit someone who thrives in a dynamic environment and enjoys building high-performance, user-centric applications. Key Responsibilities Translate user stories into scalable, high-quality technical solutions Contribute to Agile ceremonies including sprint planning, stand-ups, and retrospectives Design, build, test, and deploy applications within a microservices architecture Develop responsive, real-time front-end interfaces for trading workflows Build proof-of-concepts (PoCs) and UI prototypes to support business requirements Write and maintain integration tests as part of the development lifecycle Collaborate with cross-functional teams to deliver key milestones Provide support for production systems when required Technical Skills & Experience Essential: Strong experience with Next.js, React, and TypeScript Solid front-end engineering experience, ideally within real-time or trading environments Experience with WebSockets or SignalR for real-time communication Backend development experience with .NET (C#) and/or Python Strong understanding of REST APIs and microservices architecture Experience with message brokers (e.g. RabbitMQ or Kafka) Knowledge of caching technologies (e.g. Redis) Experience with Azure DevOps / CI/CD pipelines / Git Working knowledge of SQL and NoSQL databases Experience with cloud platforms (Azure or AWS) Desirable: Experience with containerisation (Docker, Kubernetes) Knowledge of financial systems or trading platforms Exposure to FIX protocol Understanding of asset classes such as FX, derivatives, or similar Qualifications & Experience Degree in Computer Science, Engineering, or a related field 2-3 years' experience in full stack or front-end development Prior experience working on data-driven or real-time UI applications preferred Exposure to Agile delivery environments Key Attributes Proactive and self-motivated, with the ability to work independently Comfortable working in a fast-paced, evolving environment Strong attention to detail and quality Effective problem solver with a pragmatic approach Collaborative team player with strong communication skills