> Markdown version of [/jobs/ext/2500395-lead-ui-developer-single-dealer-platform-typescript-rxjs-react](https://www.wearedevelopers.com/jobs/ext/2500395-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:** Job Bank - **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:** August 3, 2026 - **Apply:** https://dejobs.org/x/x/51B10DAF5BC84A7BA3C4C00EFD4961C0/job/ ## 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., * At Bank of America, we strive to prioritise employees' health and wellbeing - it's what makes us a Great Place to Work. * Private healthcare for you and your family plus an annual health screen to help you manage your physical wellness with the option to purchase a screen for your partner. * Competitive pension plan, life assurance and group income protection cover if you become unable to work as a result of a disability or health reasons. * We offer 26-weeks paid maternity leave, 16-weeks paid paternity leave and inclusive family leave arrangements for working parents and carers including 20 days of back-up childcare including access to school holiday clubs and 20 days of back-up adult care per annum. * 20 days of back-up childcare including access to school holiday clubs and 20 days of back-up adult care per annum. * The ability to change your core benefits as well as the option of selecting a variety of flexible benefits to suit your personal circumstances including access to a wellbeing account, travel insurance, critical illness, cycle to work etc. * Access to free counselling through the Employee Assistance Program and virtual GP services through our private health care plan. * Access to an Employee Assistance Program for confidential support and help for everyday matters. * Ability to donate to charities of your choice directly through payroll and the bank will match your contribution. * Opportunity to access our Arts & Culture corporate membership program and receive discounted entry to some of the UK's most iconic cultural institutions and exhibitions. * Opportunity to give back to your community, develop new skills and work with new groups of people by volunteering in your local community. Bank of America: Good conduct and sound judgment is crucial to our long term success. It's important that all employees in the organisation understand the expected standards of conduct and how we manage conduct risk. Individual accountability and an ownership mind-set are the cornerstones of our Code of Conduct and are at the heart of managing risk well. We are an equal opportunities employer and ensure that no applicant is subject to less favourable treatment on the grounds of sex, gender identity or gender reassignment, marital or civil partner status, race, religion or belief, colour, nationality, ethnic or national origins, age, sexual orientation, pregnancy or maternity, socio-economic background, responsibility for dependants or physical or mental disability. The Bank selects candidates for interview based on their skills, qualifications and experience. We strive to ensure that our recruitment processes are accessible for all candidates and encourage any candidates to tell us about any adjustment requirements. Bank of America and its affiliates consider for employment and hire qualified candidates without regard to race, religious creed, religion, color, sex, sexual orientation, genetic information, gender, gender identity, gender expression, age, national origin, ancestry, citizenship, protected veteran or disability status or any factor prohibited by law, and as such affirms in policy and practice to support and promote the concept of equal employment opportunity, in accordance with all applicable federal, state, provincial and municipal laws. The company also prohibits discrimination on other bases such as medical condition, marital status or any other factor that is irrelevant to the performance of our teammates. View your "Know your Rights (https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12.pdf) " poster. View the LA County Fair Chance Ordinance (https://dcba.lacounty.gov/wp-content/uploads/2024/08/FCOE-Official-Notice-Eng-Final-8.30.2024.pdf) . ## Related Videos - [How to Create New RxJS Operators](https://www.wearedevelopers.com/videos/683-how-to-create-new-rxjs-operators) - [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) - [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) - [Rethinking Reactive Architectures with GraphQL ](https://www.wearedevelopers.com/videos/121-rethinking-reactive-architectures-with-graphql) - [Practice makes perfect - when it comes to RxJS](https://www.wearedevelopers.com/videos/1-practice-makes-perfect-when-it-comes-to-rxjs) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) ## 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) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)