UI/UX Developer – ReactJS + Java – Onsite in Berkeley Heights, NJ-mandatory face‑to‑face interview

Job Title: UI/UX Developer – ReactJS + Java

Location: Berkeley Heights, NJ – Onsite-Local preferred here

Contract Type: Contract (C2C/W2)

Experience Level: 8 -10+ years

Job Description

Role Summary

We are seeking a UI/UX Developer with strong frontend engineering experience in ReactJS, Next.js, TypeScript, and Java, combined with expertise in accessibility, security, and AWS deployment. The role involves building reliable web applications that run inside iOS/Android webviews, ensuring ADA/WCAG compliance, and collaborating with cross‑platform teams to deliver secure, scalable solutions.

Key Responsibilities

• Build and maintain React/Next.js components for iOS/Android webviews
• Ensure ADA/WCAG 2.1 AA accessibility compliance (semantic markup, ARIA, screen‑reader compatibility, keyboard navigation)
• Author and maintain shell scripts for build/deployment; integrate with AWS CLI and CI/CD pipelines
• Collaborate with iOS/Android engineers on webview bridges, intents, and native callbacks
• Manage Redux state flows for secure token handling, session management, PCI compliance
• Write unit/integration/e2e tests (Jest, React Testing Library) and instrument observability with Datadog
• Optimize performance for low‑power devices and constrained networks
• Enforce code quality with ESLint, Prettier, Husky, SonarQube, and CI checks

Mandatory Skills

• 5-8+ years frontend engineering with React 18+, Next.js, TypeScript
• Deep knowledge of Redux (thunks/sagas/observables)
• Practical experience with Apple Wallet/Google Wallet Passes or equivalent token provisioning
• Proven ability to deliver WCAG 2.1 AA compliant applications
• Proficiency in shell scripting (Bash/zsh), AWS CLI, CI/CD automation
• Experience with WebView‑based apps and native‑web interactions
• Strong knowledge of secure token handling, CORS, CSRF, PCI compliance
• Testing expertise: Jest, React Testing Library, Docker basics
• Styling: Material‑UI v4/v5, Emotion/Styled Components, responsive design

Nice‑to‑Have

• Familiarity with native iOS/Android development
• Experience generating/signing wallet passes, JWT workflows, HSM integrations
• Prior fintech/payments domain experience

Technical Environment

• Frontend: React 18, Next.js, TypeScript, Redux
• Styling: Material‑UI, Emotion/Styled Components
• Testing: Jest, React Testing Library
• CI/Deployment: Docker, shell scripts, AWS CLI, GitHub Actions/Jenkins, SonarQube
• Monitoring: Datadog