Senior React Architect & Front-End Lead (TypeScript)

Saransh Inc; Jersey City (NJ); On-site; USD 160,000 - 210,000; Full time

Job summary

Saransh Inc. is seeking a React Architect / Lead Front-End Engineer to steer front‑end architecture in Jersey City, NJ. You will own complex, user‑facing web applications and drive high‑quality experiences with performance, accessibility, and secure client‑side practices.

Lead collaboration with UX/Product, establish standards, and build atop modern UI foundations, including design systems and cross‑browser support, while leveraging AI‑assisted tooling for development and testing.

Qualifications

• 12+ years of software engineering experience with deep expertise in front‑end web development.
• Expert-level proficiency in React, including hooks, component composition, context, and rendering optimization.
• Strong TypeScript and modern JavaScript skills.
• Experience with modern front‑end tooling including Vite, Webpack, Babel/SWC, npm/pnpm/yarn, and build/release pipelines.
• Strong CSS expertise, including responsive design, theming, and scalable styling approaches.
• Experience with testing frameworks such as Jest/Vitest, React Testing Library, Playwright, and Cypress.
• Strong knowledge of accessibility standards (WCAG/ARIA) and accessibility testing practices.
• Experience optimizing application performance, including Core Web Vitals, bundle splitting, SSR/CSR strategies, and caching.
• Strong GraphQL and REST API integration experience.
• Knowledge of web security best practices, including XSS/CSRF prevention and secure authentication/session management.
• Experience with front‑end observability, logging, monitoring, and production debugging.
• Required: Hands‑on experience using AI‑assisted engineering tools such as GitHub Copilot or Claude Code for development, testing, refactoring, and debugging.

Responsibilities

• Lead development of complex, user-facing web applications using React and TypeScript, owning front-end architecture and delivery.
• Partner with UX and Product teams to translate designs into high-quality user experiences while considering performance, accessibility, and feasibility.
• Establish and evolve front-end standards including component architecture, state management, routing, coding conventions, and testing practices.
• Build using JPMC's EXDS UI foundations, including design systems, component libraries, theming, responsive layouts, and cross-browser compatibility.
• Drive performance and quality through Core Web Vitals optimization, bundle optimization, rendering strategies, caching, and observability.
• Implement advanced UI capabilities including data visualization, real‑time updates, offline‑friendly applications, and complex forms/workflows.
• Ensure secure client‑side development practices, including authentication flows, token handling, secure storage, and protection against common web vulnerabilities.
• Collaborate with backend teams on GraphQL and REST API contracts, advocating for front‑end friendly designs including pagination, filtering, caching, and error handling.

Skills

React

Next.js

TypeScript

GraphQL

AI Tools (GitHub Copilot / Claude Code

Tools

Vite

Webpack

Babel/SWC

npm/pnpm/yarn

Jest/Vitest

React Testing Library

Playwright

Cypress

Storybook

Job description

Saransh Inc. is seeking a React Architect / Lead Front-End Engineer to steer front‑end architecture in Jersey City, NJ. You will own complex, user‑facing web applications and drive high‑quality experiences with performance, accessibility, and secure client‑side practices.

Lead collaboration with UX/Product, establish standards, and build atop modern UI foundations, including design systems and cross‑browser support, while leveraging AI‑assisted tooling for development and testing.