> Markdown version of [/jobs/ext/3871493-ui-engineer](https://www.wearedevelopers.com/jobs/ext/3871493-ui-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # UI Engineer - **Company:** Alltech Consulting Services - **Location:** Jersey City, NJ, United States - **Contract:** Contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Artificial Intelligence, Application Testing, Cross-Site Request Forgery, Data Visualization, Software Debugging, Software Design Patterns, Spring Framework, Routing, OpenID, Software Tools, Screen Reader, Software Engineering, Strategies of Testing, TypeScript, Web Content Accessibility Guidelines, Web Applications, Web Usability, Data Logging, Apache Yarn, GitHub Copilot, ReactJS, Delivery Pipeline, Claude Code, Concurrency, Cypress (Programming Language), Caching, Cross-Site Scripting (XSS), Backend, Webpack, Playwright, Graphql, Front End Software Development, React Testing Library, JestJS, Pagination, Api Management, Microservices - **Published:** October 22, 2026 - **Apply:** https://www.dice.com/job-detail/e856a38b-ab16-4601-b0ca-69543d6279a0 ## About the Role * 12+ 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. * Strong Java and Java Spring skills to develop microservices / API contracts (GraphQL/REST) using Java and Spring technologies and front-end friendly design patterns (pagination, filtering, error models). * Deep experience with modern front-end tooling: Vite/Webpack, Babel/SWC, npm/pnpm/yarn, monorepos (optional), and build/release pipelines. * 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. ## Description Lead the design and development of modern, high-performance web experiences using React and the broader front-end ecosystem. This role is front-end (React) 60% and backend (Java Spring) 40% focused skills to deliver cutting-edge UI & Microservices capabilities and set engineering standards., * Lead development of complex, user-facing web applications using React, owning the front-end architecture and delivery approach. * Develop microservices / API contracts (GraphQL/REST) using Java and Spring technologies and front-end friendly design patterns (pagination, filtering, error models). * 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 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.