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Software Engineer III (Frontend)

140000.00 USD / Year · Job Posted February 21, 2026
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Job Description

We’re looking for a Frontend Software Engineer III to help build and evolve customer-facing applications across modern SPA frameworks and server-rendered systems. This role is for a strong, independent engineer who can own frontend systems end-to-end, from UX collaboration and architecture decisions through implementation, performance optimization and production support. Our frontend ecosystem includes React, Vue, Twig-based server-rendered templates and Bootstrap for styling. Experience working across both SPA and traditional rendered environments is important. You’ll work on high-visibility, revenue-impacting products where performance, usability and clarity matter. We expect engineers at this level to leverage modern tooling — including AI-assisted development — to improve velocity, test coverage and code quality while maintaining strong engineering judgment.

Job Responsibility

  • Design, build and maintain modern frontend applications using React
  • Maintain and improve Twig-rendered UI templates
  • Build and extend responsive UI components using Bootstrap
  • Collaborate with product, backend and design teams to deliver polished features
  • Own frontend architecture decisions within your domain
  • Improve application performance, accessibility and responsiveness
  • Utilize AI-assisted tools to accelerate implementation, refactoring and test creation
  • Participate in code reviews and mentor mid-level engineers
  • Contribute to shared component libraries and frontend standards
  • Support production systems and help resolve user-facing issues
  • Build reusable, well-tested UI components
  • Implement thoughtful state management patterns
  • Optimize bundle size, rendering performance and Core Web Vitals
  • Integrate frontend systems with REST and/or GraphQL APIs
  • Maintain clean separation between presentation, logic and data
  • Ensure accessibility (WCAG), cross-browser compatibility and responsive design
  • Write unit and integration tests
  • Leverage AI tools responsibly to increase development speed without sacrificing quality
  • Contribute to CI/CD and frontend build pipelines

Requirements

  • 5+ years of professional frontend engineering experience
  • Strong experience with React and/or Vue
  • Solid understanding of JavaScript fundamentals and modern ES standards
  • Experience working with server-rendered template systems (Twig or similar)
  • Strong experience with Bootstrap or similar CSS frameworks
  • Experience building production-grade UI systems at scale
  • Deep understanding of browser performance and debugging tools
  • Ability to own complex features independently
  • Experience using AI development tools to enhance productivity and testing workflows
  • Strong communication skills and product awareness

Nice to have

  • Experience with Tailwind
  • Experience migrating legacy templates to SPA frameworks
  • Experience building or maintaining design systems
  • Strong TypeScript proficiency
  • Familiarity with A/B testing frameworks
  • Experience in high-traffic, data-heavy environments
  • Exposure to backend systems (Go, PHP, Ruby, or Python)

What we offer

  • Medical, dental, vision insurance
  • Wellness and mental health benefits
  • Tax-Advantaged healthcare accounts
  • Financial and income protection benefits (life insurance, short-term disability, 401(k)
  • Paid time off (PTO), holidays and sick time off
  • Remote worker assistance for wellness and home office

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