Software Engineer III-Front End (ReactWeb)

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level.

As a Software Engineer III at JPMorganChase within the Employee platform you serve as a seasoned member of an agile team to design and deliver trusted market-leading technology products in a secure stable and scalable way. You are responsible for carrying out critical technology solutions across multiple technical areas within various business functions in support of the firms business objectives.

Job responsibilities

• Lead development of complex user-facing web applications using React TypeScript owning the front-end architecture and delivery approach.
• Partner with UX/Product to translate designs into polished experiences; influence requirements with feasibility performance and accessibility considerations.
• Establish and evolve front-end standards: component architecture state management routing code conventions and testing practices.
• Build using JPMCs EXDS UI foundations: design system / component library theming responsive layouts and cross-browser compatibility.
• Drive performance and quality: Core Web Vitals bundle optimization rendering strategies caching and runtime observability.
• Implement advanced UI capabilities such as rich data visualization real-time updates offline-friendly patterns and robust form/workflow experiences.
• Ensure secure client-side patterns: safe auth flows token handling guidance secure storage and protection against common web vulnerabilities.
• Collaborate with backend teams on API contracts (GraphQL/REST) and advocate for front-end friendly patterns (pagination filtering error models).

• Leverages enterprise-authorized AI coding assist tools within the work environment to improve code quality delivery speed and productivity across complex deliverables (e.g. code generation/refactoring unit test creation documentation) while validating outputs through peer review automated testing and secure coding standards; contributes learnings and reusable patterns to improve broader team effectiveness.

• Applies knowledge of tools within the Software Development Life Cycle toolchain including enterprise-authorized AI-assisted development and automation capabilities to improve the value realized by automation.

Required qualifications capabilities and skills

• 4 years of professional software engineering experience with strong front-end focus; experience leading projects and mentoring engineers.

• Expert-level React (hooks component composition context rendering behavior concurrency patterns where applicable).Strong TypeScript (types as design generics strictness) and modern JavaScript fundamentals.

• Deep experience with front-end tooling (Vite/Webpack Babel/SWC npm/pnpm/yarn monorepos) and build/release pipelines.

• Strong CSS skills (responsive design CSS architecture theming scalable styling).

• Advanced testing practices (Jest/Vitest React Testing Library Playwright/Cypress) with ownership of test strategy.

• Accessibility expertise (WCAG/ARIA keyboard navigation screen readers automated and manual testing).

• Performance engineering and API integration (profiling bundle splitting SSR/CSR trade-offs caching Core Web Vitals; GraphQL/REST error handling pagination client state).

• Security and observability awareness (XSS/CSRF prevention dependency hygiene secure auth/session patterns client-side logging/metrics debugging production issues) plus MUST: proficiency with AI-assisted engineering tools (e.g. Copilot Claude) with validation and secure practices.

• Hands-on experience using enterprise-authorized AI-assisted software development tools within the work environment (e.g. for coding test creation troubleshooting or documentation) with demonstrated ability to critically evaluate validate and refine AI-generated outputs for correctness performance and security.

• Understanding of responsible AI use in engineering workflows including data sensitivity considerations secure handling of inputs/outputs and adherence to resiliency and security expectations; ability to guide peers on safe and effective usage within team practices.

Preferred qualifications capabilities and skills

• Experience with SSR/meta frameworks: / Remix and SEO considerations.
• Experience leveraging a design system (Storybook tokens).
• Experience with micro-frontend patterns and module federation (where relevant).
• Experience with visualization and rich UI: D3 Canvas/WebGL advanced tables/grids animation libraries.
• Familiarity with authentication integrations (OIDC/OAuth2) and enterprise SSO constraints.
• Proven track record modernizing legacy front ends and improving developer experience (DX).