> Markdown version of [/jobs/ext/3008031-lead-ui-developer-single-dealer-platform-typescript-rxjs-react](https://www.wearedevelopers.com/jobs/ext/3008031-lead-ui-developer-single-dealer-platform-typescript-rxjs-react). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Lead UI Developer - Single Dealer Platform (TypeScript / RxJS / React) - **Company:** Bank of America Corporation - **Location:** Bromley, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Automation of Tests, Code Review, Continuous Integration, Cross-Site Request Forgery, Web Development, Event-Driven Programming, Fault Tolerance, Protocol Buffers, OAuth, OpenID, Phishing, Data Streaming, TypeScript, Web Content Accessibility Guidelines, WebSocket, Web Usability, WebRTC, Data Logging, RxJS, ReactJS, Cross-Site Scripting (XSS), Low Latency, Playwright, Npm(Software), Reactive Programming, Graphql, React Testing Library, Api Design, JestJS, Restful APIs - **Published:** September 20, 2026 - **Apply:** https://ghr.wd1.myworkdayjobs.com/lateral-emea/job/Bromley/Lead-UI-Developer---Single-Dealer-Platform--TypeScript---RxJS---React-_26027274 ## About the Role * Solid years building web applications with TypeScript and React; 3+ years in a senior/lead role. * WebSockets, Server-Sent Events, WebRTC or other high performance bidirectional data streaming experience. * GraphQL, Protobuf, Flatbuffers or other schema-driven API design tools. * Strong RxJS (or equivalent observables experience) and reactive architecture in production systems. * Proven experience with real time UIs (market data streams, pricing, RFQ/execution, dashboards) and low latency rendering. * Deep knowledge of state management (RxJS, or React Query + custom streams) and data flow patterns for streaming + request/response. * Testing: Jest/Vitest, React Testing Library, Playwright; strong mock/contract testing. * Security: XSS mitigation, CSP, auth flows (OAuth), secure storage, anti phishing UX. * CI/CD and feature flagged rollout in regulated environments. * Excellent communication; ability to drive consensus across engineering, product, and trading desks. ## Description You will be joining a highly collaborative, cross-functional team responsible for delivering a world-class Single Dealer Platform used by Sales, Trading, and institutional clients globally. The team works closely with product, UX, quantitative, pricing, execution, and infrastructure teams to build low-latency, real-time trading applications that power critical front-office workflows, We're looking for a hands on Lead UI Developer to drive the front end architecture, delivery, and quality of our Single Dealer Platform used by Sales/Trading and institutional clients. You'll own the React/TypeScript codebase, bring reactive programming best practices (RxJS), and build low latency, event driven UI features for real time market data, pricing, RFQ, order entry, and trade capture. You will collaborate closely with product, UX, and server side teams (pricing/MD feeds, execution, and risk) to ship performant, resilient, and accessible interfaces, * Lead the UI roadmap, architecture decisions, coding standards, and code reviews for the SDP. * Partner with product owners and UX to shape requirements into pragmatic, iterative delivery plans. * Own the front end architecture (React + TypeScript + RxJS), including state management, observables, and data flow design for live market data (WebSockets/Server Sent Events). * Design and implement modular, testable, and reusable components and design system primitives aligned to accessibility (WCAG 2.1 AA+). * Drive performance engineering: rendering optimization, virtualization for large grids/blotters, memoization, Suspense/Concurrent features, and profiling. * Champion resilience: graceful degradation, offline/slow network fallbacks, retry/backoff for streaming and REST, circuit breaker patterns at the UI edge. * Enforce automated testing (unit, integration, and UI E2E) and CI/CD with quality gates. * Instrument analytics, logging, and front end observability (e.g., Web Vitals, error tracking). * Ensure secure front end practices (XSS/CSRF protection, content security policy, secrets handling, auth flows with OAuth/OIDC/JWT)., * Streaming price tiles with RFQ/quote negotiation, inline hedging hints, and instantaneous trade tickets. * Blotters & position views capable of handling 100k+ rows with virtualization and multi column filters. * Risk & PnL dashboards with real time recalculation indicators and snapshot comparisons. * Workflow panels for allocations, confirmations, and exception handling with audit friendly UX. Skills that will help: * Capital markets domain: FX, Rates, Credit, Equities, Commodities-pricing conventions, market conventions, RFQ lifecycle, OMS/EMS, STP. * Micro frontends (Module Federation, single-spa) and shared design systems across multiple pods. * Data heavy UIs: grid ecosystems (AG Grid), complex filtering, pinning, pivoting. * Publishing and maintaining NPM packages. ## Related Videos - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [Keeping applications secure by evolving OAuth 2.0 and OpenID Connect](https://www.wearedevelopers.com/videos/100152-keeping-applications-secure-by-evolving-oauth-2-0-and-openid-connect) - [Microservices architecture as a key element in building trading systems for global finance markets](https://www.wearedevelopers.com/videos/1196-microservices-architecture-as-a-key-element-in-building-trading-systems-for-global-finance-markets) - [Practice makes perfect - when it comes to RxJS](https://www.wearedevelopers.com/videos/1-practice-makes-perfect-when-it-comes-to-rxjs) - [Breaking Down Silos Between Design and Development ](https://www.wearedevelopers.com/videos/194-breaking-down-silos-between-design-and-development) - [Delay the AI Overlords: How OAuth and OpenFGA Can Keep Your AI Agents from Going Rogue](https://www.wearedevelopers.com/videos/1637-delay-the-ai-overlords-how-oauth-and-openfga-can-keep-your-ai-agents-from-going-rogue) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)