> Markdown version of [/jobs/48423-founding-engineer-front-end](https://www.wearedevelopers.com/jobs/48423-founding-engineer-front-end). 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). --- # Founding Engineer (Front End) - **Company:** Momentic - **Location:** San Francisco, United States - **Experience:** Expert - **Salary:** €180,000.0 - €220,000.0 - **Skills:** JavaScript, TypeScript, React, Next.js - **Published:** August 22, 2026 - **Apply:** https://jobs.ashbyhq.com/momentic/c5940610-eec6-43c1-8e2f-b9bf6c992124 ## About the Role - 5+ years of professional software engineering experience - Hands-on and extensive TypeScript proficiency - Proficiency with React. - Proficiency with Next.js - Have great written and verbal communication. ## Description - Own the front end of the product end to end in a fast paced environment - Take on a high volume of UI work, implementing a strong, unique design language: unique UIs to display and enable human interaction with complex teams of AI browser agents - Partner with our Designer as a real creative collaborator: brainstorm UI directions together, give feedback on work in progress, and prototype in code to figure out what actually works. We want someone with opinions about interfaces, not someone waiting on a handoff - Bring modern front end framework expertise to raise the bar on UI quality and consistency (Part of front end our stack today includes Shadcn, Tailwind, and Next.js) - As a senior hire, help establish front end best practices and structure for the team going forward ## About Momentic Momentic is the AI QA for web, iOS, or Android. Engineering teams use Momentic to create, run, triage, and maintain end-to-end tests with AI agents. Tests are written in plain English, run in CI, and catch regressions before they reach users. Trusted by Notion, Bilt, Xero, Retool, Runway and 100+ more.  [Company profile](https://www.wearedevelopers.com/companies/4288-momentic) ## Related Videos - [How to Stop Choosing JavaScript Frameworks and Start Living](https://www.wearedevelopers.com/videos/118-how-to-stop-choosing-javascript-frameworks-and-start-living) - [Challenges of building React and React Native apps](https://www.wearedevelopers.com/videos/448-challenges-of-building-react-and-react-native-apps) - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Building Interactive Async UI with React 19 and Ariakit](https://www.wearedevelopers.com/videos/1589-building-interactive-async-ui-with-react-19-and-ariakit) - [Microfrontends at Scale](https://www.wearedevelopers.com/videos/236-microfrontends-at-scale) ## Related Articles - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front) - [Top 5 React Form Libraries for Developers](https://www.wearedevelopers.com/magazine/399-top-5-react-form-libraries-for-developers) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn)