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Mid Level Frontend Web Developer Jobs in New Jersey

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Mid Level Frontend Web Developer information

What is the difference between Mid Level Frontend Web Developer vs Junior Frontend Web Developer?

AspectMid Level Frontend Web DeveloperJunior Frontend Web Developer
Experience2-4 years of experience0-1 year of experience
SkillsProficient in HTML, CSS, JavaScript, frameworks like React or Angular, and basic debuggingBasic understanding of HTML, CSS, JavaScript, and learning frameworks
ResponsibilitiesDeveloping features, collaborating with designers, troubleshooting issuesAssisting in coding, learning project workflows, fixing minor bugs
Work EnvironmentIndependent task handling, team collaborationSupervised tasks, mentorship, learning-focused

The Mid Level Frontend Web Developer typically has more experience and handles complex tasks independently, while the Junior Frontend Web Developer is still developing skills and works under supervision. Both roles are essential in web development teams, with the mid-level role requiring a deeper understanding of frameworks and project workflows.

What are the most commonly searched types of Frontend Web Developer jobs in New Jersey?

The most popular types of Frontend Web Developer jobs in New Jersey are:

What cities in New Jersey are hiring for Mid Level Frontend Web Developer jobs?

Cities in New Jersey with the most Mid Level Frontend Web Developer job openings:

Mid Level Frontend Web Developer jobs near you

Front-End Architect (React/Web)

Long Finch Technologies

Demarest, NJ

Full-time

Posted 3 days ago

New

Job description

Required Skills:

  • 15+ 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: 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).

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).

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