Lead Software Engineer for Digital Platforms Team in London

We have an opportunity to impact your career and provide an adventure where you can push the limits of what’s possible. As a Lead Software Engineer at JPMorgan Chase within the Digital Platforms Team, you are an integral part of an agile team that works to enhance, build, and deliver trusted market‑leading technology products in a secure, stable, and scalable way. As a core technical contributor, you are responsible for conducting critical technology solutions across multiple technical areas within various business functions in support of the firm’s business objectives.

Job Responsibilities

• Architect scalable, resilient UI platforms – Define and evolve clean, modular React architectures (state management, routing, SSR/SSG, hydration) that scale across teams and products, emphasizing maintainability, resiliency, and long‑term sustainability.
• Lead performance engineering – Set and enforce performance budgets and Web Vitals targets; drive bundle strategy (code splitting, lazy loading), caching/CDN policies, image optimization, profiling, and regression monitoring to ensure consistently fast, reliable experiences.
• Build and govern reusable component libraries and design systems – Develop typed, accessible, and themeable React component libraries; establish versioning, documentation, and adoption guidelines to promote reuse, consistency, and platform‑wide efficiency.
• Enforce code quality, testing, and accessibility – Establish coding standards and review practices; implement robust testing (unit/integration/E2E) and CI coverage; ensure WCAG‑compliant accessibility and front‑end security hygiene throughout the platform.
• Provide cross‑functional leadership and mentorship – Translate product and UX requirements into technical roadmaps; collaborate tightly with product, design, and backend teams; mentor engineers in platform‑thinking and React best practices; use data and observability to guide decisions and drive continuous improvement.

Required Qualifications, Capabilities, And Skills

• 10+ years in UI and front‑end development with React – Proven track record building and scaling complex, production‑grade React applications across multiple products and teams.
• Demonstrated platform mindset with strong focus on performance – Emphasis on clean architecture, robustness, resiliency, reusability, and measurable improvements to Core Web Vitals.
• Advanced React and TypeScript expertise – Deep knowledge of hooks, context, Suspense/concurrent features, SSR/SSG patterns (e.g., Next.js), and strict typing for safety and maintainability.
• UI architecture and systems design – Ability to define scalable component architectures, design systems, modular libraries, and (where appropriate) micro frontends or module federation.
• State management and data layer proficiency – Experience with Redux Toolkit, Zustand, React Query/TanStack Query, and GraphQL, including caching, synchronization, and error handling strategies.
• Accessibility and standards compliance – WCAG compliance, semantic HTML, keyboard navigation, screen‑reader support, and inclusive design integrated into the development workflow.
• Testing, tooling, and CI/CD excellence – Strong in unit/integration/E2E testing (Jest, Testing Library, Playwright/Cypress), code quality gates, linting, type checks, and modern bundlers/dev servers (Webpack, Vite) with automated, reliable release pipelines.

About Us

J.P. Morgan is a global leader in financial services, providing strategic advice and products to the world’s most prominent corporations, governments, wealthy individuals and institutional investors. Our first‑class business in a first‑class way approach to serving clients drives everything we do. We strive to build trusted, long‑term partnerships to help our clients achieve their business objectives.

We recognize that our people are our strength and the diverse talents they bring to our global workforce are directly linked to our success. We are an equal opportunity employer and place a high value on diversity and inclusion at our company. We do not discriminate on the basis of any protected attribute, including race, religion, color, national origin, gender, sexual orientation, gender identity, gender expression, age, marital or veteran status, pregnancy or disability, or any other basis protected under applicable law. We also make reasonable accommodations for applicants’ and employees’ religious practices and beliefs, as well as mental health or physical disability needs.