UI Engineer, React/Typescript - Optum Tech Consumer Engineering

UnitedHealth Group•Schaumburg, IL

1d•Remote

About The Position

Optum Tech is a global leader in health care innovation. Our teams develop cutting-edge solutions that help people live healthier lives and help make the health system work better for everyone. From advanced data analytics and AI to cybersecurity, we use innovative approaches to solve some of health care’s most complex challenges. Your contributions here have the potential to change lives. Ready to build the next breakthrough? Join us to start Caring. Connecting. Growing together. You’ll enjoy the flexibility to work remotely from anywhere within the U.S. as you take on some tough challenges.For all hires in the Minneapolis or Washington, D.C. area, you will be required to work in the office a minimum of four days per week.

Requirements

Undergraduate degree or equivalent experience
Proven front-end experience building scalable React applications and component libraries
Solid proficiency in TypeScript 5 (typing props, generics, utility types, type guards) and modern React patterns (hooks, memoization, context when appropriate)
Hands-on experience with Redux Toolkit and React Redux; comfortable designing slices/selectors and handling async flows
Proficiency with React Router (v7) for routing, guarded flows, and navigation patterns
Solid understanding of web accessibility (WCAG AA), semantic HTML, and keyboard navigation
Comfort with build tools, CI/CD, and version control (Git), plus Agile collaboration
Excellent communication skills, attention to detail, and a collaborative mindset

Nice To Haves

Experience with analytics instrumentation, internationalization, and performance profiling
Experience maintaining a living design system and documenting components in Storybook 8
Solid testing discipline: Jest 29 and Testing Library for unit/integration tests; Playwright for E2E; familiarity with mock strategies and test isolation
Familiarity with Nx monorepos, modular libraries, and performance optimization within large codebases
Expertise in SCSS for styling (variables, mixins, responsive layouts), with a focus on maintainable, mobile-first design

Responsibilities

Build accessible, reusable UI components in React 19 with TypeScript 5, following industry best practices
Translate dynamic mockups into production-ready components and pages, ensuring WCAG AA compliance, keyboard accessibility, and semantic HTML
Implement application flows using React Router 7 and state management with Redux Toolkit and React Redux
Maintain and evolve our SCSS-based design system; document and showcase components in Storybook 8
Optimize rendering, bundle size, and runtime performance using memoization, hooks, and Nx workspace tooling
Write and maintain unit and integration tests using Jest 29 and Testing Library; contribute to E2E coverage with Playwright
Collaborate with shared libraries, strict typing, and CI pipelines; follow code review and git workflows
Contribute to internationalization and runtime translation patterns and ensure robust error handling and analytics instrumentation where needed
Participate in Agile ceremonies; partner with design and product to plan features, refine requirements, and evaluate technical trade-offs
Write high-quality, accessible UI shipped with strong test coverage and documented in Storybook
Create reusable components and hooks that reduce duplication and accelerate feature delivery
Wrote maintainable code that fits industry standards: typed, readable, and well-tested
Contribute measurable improvements in performance, reliability, and developer experience across our codebase