Sr Front-End Engineer (ReactWeb)

Role summary

Lead the design and development of modern high-performance web experiences using React and the broader front-end ecosystem. This role is front-end focused partnering closely with Product UX and backend/platform teams to deliver cutting-edge UI capabilities and set engineering standards.

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 JPMC s 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).

Required qualifications capabilities and skills

• 10 years professional software engineering experience with significant depth in front-end web development; experience leading projects and mentoring engineers.

• Expert-level React proficiency (hooks component composition context rendering behavior concurrency-related patterns where applicable).

• Strong TypeScript skills (types-as-design generics strictness strategies) and modern JavaScript fundamentals.

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

• Strong CSS skills: responsive design CSS architecture (CSS Modules CSS-in-JS or utility frameworks) theming and consistent styling at scale.

• Advanced testing practices: Jest/Vitest React Testing Library Playwright/Cypress for E2E; test strategy ownership.

• Accessibility expertise: WCAG/ARIA keyboard navigation screen-reader considerations and automated manual a11y testing.

• Performance engineering: profiling bundle splitting SSR/CSR trade-offs caching strategies and Core Web Vitals optimization.

• API integration expertise with GraphQL and REST (schema-driven development error handling pagination caching and client state strategies).

• Security awareness for web apps: XSS/CSRF prevention dependency hygiene secure auth/session patterns (OIDC awareness a plus).

• Observability for the front end: client-side logging/metrics error reporting and debugging production issues.

• MUST: Proficiency using AI-assisted engineering tools (e.g. Claude Code GitHub Copilot) to accelerate implementation refactoring test creation and debugging while validating correctness and adhering to secure handling practices.

Preferred qualifications

• 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).

Donato Technologies Inc. is a trusted IT staffing consulting and software development partner headquartered in Dallas Texas. We support clients across industries by understanding their unique business needs and delivering tailored technology and workforce solutions. Our focus is on connecting the right talent with the right opportunity-ensuring clients receive dependable skilled professionals and candidates receive meaningful career growth and support. We work closely with small to mid-sized organizations to provide flexible high-quality services that drive performance innovation and long-term success.