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Sr Front-End Engineer

InfiCareJersey City, NJ🇺🇸United StatesPosted 10 Sept 2026

Why This Role Stands Out

In this Sr. Front-End Engineer role at InfiCare, you'll leverage your expertise in modern JavaScript frameworks and architect cutting-edge user experiences, contributing significantly to a reputable company's innovative projects. This opportunity is ideal for experienced engineers who thrive in collaborative, on-site environments and are eager to shape front-end standards while driving impactful performance improvements. Apply today to advance your career with a leading organization!

Quick Overview

Seniority
Mid Senior
Work mode
On Site
Location
Jersey City, NJ, United States
Posted
Yesterday

Job Description

Job Title: Sr Front-End Engineer

Location: Jersey City, NJ

Job Type: Contract

Experience: 12+ years

Work Model: Onsite — 5 days/week

 

Job Overview

Key Responsibilities

  • Develop microservices and API contracts (GraphQL/REST) using Java and Spring with front-end friendly design patterns.
  • Partner with UX/Product to translate designs into polished, accessible, performant experiences.
  • Establish and evolve front-end standards: component architecture, state management, routing, code conventions, and testing practices.
  • Drive performance and quality: Core Web Vitals, bundle optimization, rendering strategies, caching, and observability.
  • Implement advanced UI capabilities including rich data visualization, real-time updates, and robust form/workflow experiences.
  • Ensure secure client-side patterns including safe auth flows, token handling, and protection against common web vulnerabilities.

 

Required Skills

  • Expert-level React: hooks, component composition, context, rendering behavior, concurrency patterns
  • Strong TypeScript: types-as-design, generics, strictness strategies
  • Modern JavaScript fundamentals
  • Java and Spring for microservices / API contracts
  • Front-end tooling: Vite/Webpack, Babel/SWC, npm/pnpm/yarn, build/release pipelines
  • CSS architecture: responsive design, CSS Modules, CSS-in-JS, utility frameworks
  • Testing: Jest/Vitest, React Testing Library, Playwright/Cypress, test strategy ownership
  • Accessibility: WCAG/ARIA, keyboard navigation, screen-reader considerations, automated a11y testing
  • Performance engineering: profiling, bundle splitting, SSR/CSR trade-offs, Core Web Vitals
  • API integration: GraphQL and REST, schema-driven development, error handling, caching
  • Security: XSS/CSRF prevention, dependency hygiene, secure auth/session patterns
  • Proficiency with AI-assisted engineering tools (e.g., GitHub Copilot, Claude Code)

 

Preferred Skills

  • SSR/meta frameworks: Next.js / Remix
  • Design system experience: Storybook, design tokens
  • Micro-frontend patterns and module federation
  • Rich UI/visualization: D3, Canvas/WebGL, advanced tables/grids, animation libraries
  • Authentication integrations: OIDC/OAuth2, enterprise SSO
  • Track record modernizing legacy front ends and improving developer experience

 

Location & Work Model

Jersey City, NJ — X days onsite per week.

 

Engagement Details

Contract engagement. 12+ years of professional software engineering experience required.

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