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Senior React Engineer

Juxt Juxt Pro — United Kingdom · Posted ~3 hours ago

Senior Full-time Hybrid

Skills

React TypeScript WebSockets real-time applications browser performance testing frontend development Playwright Cypress Selenium Kafka Aeron Solace AG Grid Protobuf FlatBuffers SBE

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Summary ✨ AI‑Generated

A financial technology team is seeking a senior React engineer to build high-performance, data-intensive applications. The role requires deep expertise in React and TypeScript, browser rendering and optimization, real-time streaming, and event-driven architectures. You will collaborate closely with backend engineers and work across the stack, with experience in low-latency financial systems considered advantageous.

Highlights

Senior hybrid engineering role focused on high-performance, real-time applications, with challenging frontend work, strong testing practices, and opportunities to collaborate across the stack.

Description

Senior React Engineer | Electronic Trading Technology | London Hybrid We're hiring a Senior React Engineer to join a leading financial markets technology team building high-performance trading and market data applications used globally. We're looking for engineers with: ✅ Strong React & TypeScript expertise ✅ Experience building real-time, data-intensive applications ✅ Deep understanding of browser performance, rendering, virtualisation and optimisation ✅ Experience with WebSockets, streaming data and event-driven architectures ✅ Strong testing practices (Playwright, Cypress, Selenium etc.) ✅ Ability to work across the stack and collaborate closely with backend teams Desirable experience: 🔹 Electronic Trading, Market Data or Low-Latency Systems 🔹 Solace, Kafka, Aeron or similar messaging technologies 🔹 AG Grid, Protobuf, FlatBuffers or SBE 🔹 FX, RFQ/RFS, Single Dealer Platforms or Order Management Systems This is an opportunity to work on complex front-office systems where performance, scalability and user experience are critical. Company Benefits Private PensionPrivate healthcareHybrid working25 days holiday Interview Process x1 Client Testx2 Tech Interviews