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# UI Developer

- **Company:** Perficient
- **Location:** Denver, CO, United States (Remote available)
- **Experience:** Expert
- **Salary:** $93,000.0 - $121,000.0
- **Contract:** Permanent contract
- **Skills:** Adobe Analytics, HTML, JavaScript (Programming Language), Computer-Aided Design, Application Programming Interfaces (APIs), Artificial Intelligence, Automation of Tests, Unit Testing, Microsoft Azure, Browser Compatibility, Code Review, Continuous Integration, Custom Software, Github, OAuth, OpenID, Regression Testing, Screen Reader, TypeScript, Management of Software Versions, Web Content Accessibility Guidelines, Web Applications, Web Application Frameworks, Modern Ui, Okta, GitHub Copilot, ReactJS, Claude Code, Cypress (Programming Language), Multi-Cloud, AI Coding Agents, AngularJS, Git Flow, Information Technology, Playwright, Graphql, Front End Software Development, Cloud Migration, Devsecops, Legacy Systems
- **Published:** October 9, 2026
- **Apply:** https://www.builtincolorado.com/auth/login?destination=/job/senior-ui-developer/11585656

## About the Role

* 5+ years of front-end engineering
 * 3+ years of hands-on React (18+) with TypeScript
 * Working knowledge of Angular
 * Strong JavaScript, HTML and CSS: DOM, responsive layout, cross-browser
 * Has built a shared component library or design system that other teams used
 * React MUI, including theming and style overrides
 * Design tokens and multi-theme styling
 * Storybook
 * WCAG 2.1 AA accessibility in practice
 * Automated unit, integration and end-to-end testing
 * CI/CD and Git-based workflows
 * Daily use of AI coding tools (Claude Code, GitHub Copilot or Codex), including writing good prompts and repo instruction files
 * Bachelor's in Computer Science or equivalent experience

Nice to have

 * Micro-frontend architecture with Nx and Module Federation
 * Web components or Lit
 * Publishing npm packages with semantic versioning
 * Visual regression testing at scale
 * GraphQL

## Description

As a Senior Technical Consultant you will participate in all aspects of the software development lifecycle which includes estimating, technical design, implementation, documentation, testing, deployment and support of application developed for our clients. As a member working in a team environment you will take direction from solution architects and Leads on development activities.

Responsibilities

 * Build and maintain micro-product UIs in React (Angular where needed) that mount into a shared shell
 * Build micro-frontends using Nx and Module Federation, including more than one framework on the same page
 * Build reusable components with React MUI (and Angular Material), working from the UX team's Figma designs
 * Use and extend the shared design token layer so products pick up brand changes without rework
 * Design component APIs other teams can rely on, and own versioning and migration notes for breaking changes
 * Integrate with Okta (OAuth2/OIDC, JWT) across the shell and products, and with REST and GraphQL services
 * Write automated tests: Jest for unit tests, Playwright or Cypress for end-to-end, plus visual regression
Document components in Storybook

 * Build to WCAG 2.1 AA: keyboard navigation, screen reader support, focus management
 * Maintain CI/CD pipelines in Azure DevOps and GitHub Actions, with quality gates
 * Turn requirements into technical designs and implementation plans, using AI-assisted tools throughout
 * Mentor engineers and lead code reviews, Build and maintain production-grade React+TypeScript web interfaces for data-intensive, real-time AI products. Own end-to-end frontend features, optimize UI performance for large datasets, collaborate with design and backend teams, establish frontend best practices, improve architecture and tooling, and resolve production issues across browsers and devices.
Top Skills: Ci/CdComponent LibrariesDesign SystemsFrontend Build ToolsJavaScriptModule BundlersReactReact QueryReduxTypescriptZustand, Esri