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Senior UI Developer
Role: Senior UI Engineer – Front‑Office Rates Trading Type: Contract - Compensation sits firmly at the top end of the market for this skillset Duration: 6 months rolling contract (Long‑term programme with first major delivery targeted for mid‑2027) Location: London Office requirement: 2 days per week Industry: Financial Services
Takeaway: This is a senior, front‑office‑aligned UI engineering role driving the creation of a brand‑new trading UI layer for G10 Rates. It sits inside a high‑visibility strategic programme with long‑term runway, deep technical complexity, and direct engagement with traders. You’ll shape architecture, build real‑time trading applications, and operate with significant autonomy.
The Opportunity You’ll join a newly forming engineering group building a next‑generation UI framework and trading applications for G10 Rates. This is a front‑office, high‑impact role where you’ll work closely with traders, quants and senior technologists to deliver ultra‑low‑latency, event‑driven UIs used in live markets.
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The programme is early‑stage, strategically important, and backed at senior level. Expect autonomy, ambiguity, and the chance to influence architecture from day one.
What You’ll Work On Building a new modular UI layer for Rates trading Developing real‑time trading applications using WebSockets and event‑driven patterns Contributing to a long‑term architectural shift toward smaller, decoupled applications Integrating with existing services while progressively replacing performance bottlenecks Working directly with front‑office stakeholders to iterate quickly Using AI‑assisted development to accelerate delivery across UI and supporting backend components
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Tech Stack React, TypeScript, AG Grid Event‑driven UI (WebSockets, streaming) OpenFin or similar desktop interoperability layer Modern state‑management patterns (moving away from legacy approaches) Strong preference for full‑stack‑capable engineers
What Success Looks Like You operate confidently in ambiguous, evolving environments You make strong technical decisions without waiting for perfect patterns You collaborate directly with traders and front‑office teams You deliver high‑quality UI components that perform under real‑time load You onboard quickly into complex systems and “hit the ground running”
Domain Advantage Not essential, but highly valued: Rates or interest rate derivatives knowledge Experience with electronic trading systems Exposure to quantitative finance or pricing Prior involvement in trading platform build‑outs
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