Sr Front-End Engineer

Job Title :: Sr Front-End Engineer

Location :: Jersey City ,NJ

Type:- Contract

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 responsibilitie

• sLead 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 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 skil

• ls8 years professional software engineering experience with significant depth in front-end web development; experience leading projects and mentoring engineer
• s.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 fundamental
• s.Deep experience with modern front-end tooling: Vite/Webpack, Babel/SWC, npm/pnpm/yarn, monorepos (optional), and build/release pipeline
• s.Strong CSS skills: responsive design, CSS architecture (CSS Modules, CSS-in-JS, or utility frameworks), theming, and consistent styling at scal
• e.Advanced testing practices: Jest/Vitest, React Testing Library, Playwright/Cypress for E2E; test strategy ownershi
• p.Accessibility expertise: WCAG/ARIA, keyboard navigation, screen-reader considerations, and automated manual a11y testin
• g.Performance engineering: profiling, bundle splitting, SSR/CSR trade-offs, caching strategies, and Core Web Vitals optimizatio
• n.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 issue
• s.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 practice

s.
Preferred qualificati

• onsExperience with SSR/meta frameworks: Next.js / Remix and SEO consideratio
• ns.Experience leveraging a design system (Storybook, token
• s).Experience with micro-frontend patterns and module federation (where relevan
• t).Experience with visualization and rich UI: D3, Canvas/WebGL, advanced tables/grids, animation librari
• es.Familiarity with authentication integrations (OIDC/OAuth2) and enterprise SSO constrain
• ts.Proven track record modernizing legacy front ends and improving developer experience (