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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\nThe Opportunity\n\nThe ETrading Terminal is the interface through which professional traders and institutions access the world's most important commodity market - live, with depth and precision no competitor can match. You will own the architecture of that experience. This is not a UI layer on top of a data API. It is a real-time, high-throughput trading interface used by some of the most demanding users in financial markets. You will define how it is built, set the patterns the team follows, and push the boundaries of what a browser-based trading platform can do.\n\nRequirements\n\n10+ years engineering; 5+ years building production React at scale - component lifecycle, rendering behaviour, and bundle architecture are instincts\nTypeScript mastery in strict mode - complex generics, discriminated unions, conditional types, and type-safe API boundary design\nVite and modern build tooling; tree-shaking, chunk strategy, module federation, and build performance optimisation in CI\nState management at scale: Zustand, TanStack Query, or equivalent; separation of server, client, and ephemeral UI state\nHigh-frequency WebSocket data at tick-by-tick rates - back-pressure handling, dropped-frame detection, and reconnection strategy\nBrowser internals: rendering pipeline, layout/paint/composite lifecycle, memory profiling, GC pressure, and long-task detection\nWebGL, Canvas, or custom rendering engine for high-density, real-time financial data visualisation\nDesign system ownership - token architecture, component API design, versioning strategy, and cross-team adoption at scale\nTesting discipline: unit, integration, E2E (Playwright/Cypress), visual regression, and performance budget enforcement in CI\nGraphQL or REST API co-design with backend teams; schema-first development and automated type generation\nTrack record of measurably improving engineering standards - patterns or tooling adopted org-wide\nCloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets managementNice to Have\n\nTrading UI experience (any asset class) - order books, depth ladders, RFQ workflows, option chains, or execution blotters\nMicro-frontend architecture at scale; WASM integration for performance-critical in-browser computation\nHigh-frequency streaming data; managing back-pressure and dropped-frame rendering under sustained load\nFinancial services or capital markets front-end background; familiarity with market data normalisationWhat 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\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 | OC(phone number removed) England and Wales",
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  "job_posted_at_datetime_utc": "2026-03-12T00:00:00.000Z"
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