Sr Software Engineer; UI

Sr Software Engineer(UI) (2357444)

Optum is a global organization that delivers care, aided by technology, to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data, and resources they need to feel their best. Here, you will find a culture guided by diversity and inclusion, talented peers, comprehensive benefits, and career development opportunities.

Come makes an impact on the communities we serve as you help us advance health equity on a global scale.

• Build accessible, reusable UI components in React 19 with Type Script 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.
• Write maintainable code that fits industry standards: typed, readable, and well-tested.
• Contribute measurable improvements in performance, reliability, and developer experience across our codebase.
• Design, develop, and deploy AI-powered solutions to address complex business challenges with emphasis on responsible use of AI.

• 5+ years proven front‑end experience building scalable React applications and component libraries.
• 3+ years of hands‑on experience with Type Script 5 (typing props, generics, utility types, type guards) and modern React patterns (hooks, memoization, context when appropriate).
• 2+ years of experience with Redux Toolkit and React Redux; comfortable designing slices/selectors and handling async flows.
• 2+ years of experience with React Router (v7) for routing, guarded flows, and navigation patterns.
• 2+ years of experience with SCSS for styling (variables, mixins, responsive layouts), with a focus on maintainable, mobile‑first design.
• 2+ years of experience maintaining a living design system and documenting components in Storybook 8.
• 2+ years of experience with Jest 29 and Testing Library for unit/integration tests;
  Playwright for E2E; familiarity with mock strategies and test isolation.

• Experience with analytics instrumentation, internationalization, and performance profiling.
• Familiarity with Nx monorepos, modular libraries, and performance optimization within large codebases.
• Strong 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.

Pay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). No matter where or when you begin a career with us, you’ll find a far‑reaching choice of benefits and incentives.

The salary for this role will range from $91,700 to $163,700 annually based on full‑time employment. We comply with all…