Sr Front-End Engineer; React​/Web Engineer AI-assisted engineering tools

Position: Sr Front-End Engineer (React/Web) Engineer   With AI-assisted engineering tools
Job Title:

Sr Front-End Engineer (React/Web) Engineer With AI-assisted engineering tools

Location :
Jersey City, NJ

Exp: 12+ Yrs

RTTO 5 Days Onsite

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 + Type Script, 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 (Graph

QL/REST) and advocate for front-end friendly patterns (pagination, filtering, error models).
Required qualifications, capabilities, and skills

8+ 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 Type Script 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 Graph

QL 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, Git Hub 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:
Next.js / 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).

Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.