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  "job_description": "We have a current opportunity for a React Developer on a permanent basis. The position will be based in London. For further information about this position please apply.\n\n- 10+ years engineering; 5+ years building production React at scale - component lifecycle, rendering behaviour, and bundle architecture are instincts\n\n- TypeScript mastery in strict mode - complex generics, discriminated unions, conditional types, and type-safe API boundary design\n\n- Vite and modern build tooling; tree-shaking, chunk strategy, module federation, and build performance optimisation in CI\n\n- State management at scale: Zustand, TanStack Query, or equivalent; separation of server, client, and ephemeral UI state\n\n- High-frequency WebSocket data at tick-by-tick rates - back-pressure handling, dropped-frame detection, and reconnection strategy\n\n- Browser internals: rendering pipeline, layout/paint/composite lifecycle, memory profiling, GC pressure, and long-task detection\n\n- WebGL, Canvas, or custom rendering engine for high-density, real-time financial data visualisation\n\n- Design system ownership - token architecture, component API design, versioning strategy, and cross-team adoption at scale\n\n- Testing discipline: unit, integration, E2E (Playwright/Cypress), visual regression, and performance budget enforcement in CI\n\n- GraphQL or REST API co-design with backend teams; schema-first development and automated type generation\n\n- Track record of measurably improving engineering standards - patterns or tooling adopted org-wide\n\n- Cloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management\n\nNice to Have\n\no Trading UI experience (any asset class) - order books, depth ladders, RFQ workflows, option chains, or execution blotters\n\no Micro-frontend architecture at scale; WASM integration for performance-critical in-browser computation\n\no High-frequency streaming data; managing back-pressure and dropped-frame rendering under sustained load\n\no Financial services or capital markets front-end background; familiarity with market data normalisation\n\nWhat We're Looking For\n\nYou are the engineer others come to when they do not know what is possible - and you show them. The ETrading Terminal is seen by the world's most sophisticated market participants. You take that personally, ship things that are fast and resilient, set a standard others aspire to, and treat innovation not as a project but as how you approach every ticket.\n\nTo find out more about Huxley, please visit www.huxley.com\n\nHuxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales",
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