Frontend Engineer / Design Engineer

⚡ We're winning quickly: Backed by Accel, by the same partner who led the first round for Scale, Vercel, and Sentry, plus Sheryl Sandberg's fund SBVP and Neo. We launched in February 2026 (announced here), and are already powering pages that generate hundreds of thousands of dollars in pipeline + featured on CNBC.

⚡ Recognized names that turn heads: We've earned the trust of customers like Cognition, Glean, Langchain, Tandem, 11x, + more we don't publicly reference. (Our gong has been put to great use!)

Flint is the agentic platform that ships pages from your brand and ad campaigns. AI doesn't replace marketers. It removes the work that should never have been theirs: building a one-off landing page for every keyword, every campaign change, every A/B test, then waiting on design and engineering to do it. Today we deliver on-brand pages on your own domain in minutes, with no rebuilds and no engineers. We're backed by Accel, Sheryl Sandberg (former Meta COO)'s venture fund SBVP, and Neo.

Sandberg instantly understood Flint's vision. "I was sharing how it took (me) five teams three months to build one A/B test just to increase conversion by 10% on our Google ad," Lim said. "And then she stopped me, [and] said, 'Michelle, it was 140 people at Meta who had to do this'." — TechCrunch

Imagine a website that builds new pages, tests creative, and optimizes performance in response to real-world signals: competitive shifts, user behavior, trending search queries, the way an autonomous vehicle responds to road conditions and traffic. The marketer still owns the work that compounds and the work that requires taste: strategy, audience, creative direction, brand judgment. Flint takes the manual production off their plate so they get those hours back.

"One of the most talent-dense AI startups... each member of the early Flint team has a track record, and as a team, they perform like athletes. Amazing to watch." - Dan Levine, Accel

Flint is led by co-founders Michelle Lim, Engineer #1 turned Head of Growth and Product at Warp, and Max Levenson, engineering leadership at autonomous vehicle startup Nuro, then Engineer #2 at Vooma (YCS23).

Every single member of the Flint team has been a founding engineer / founder. Early stage best practices are in our team's DNA. Because of that, our team knows how to catalyze hockey stick growth, but just as critically, how to navigate it sustainably to create $XB valued companies. After all, we've done it before. We are alums of Netflix, Scale, and Shepherd (YC W21), and work together in-person out of historic Jackson Square.

Companies have used Flint to hit goals like…

• Ranking #1 on AI answer engines like ChatGPT, Perplexity and Google AI Overview

• Lifting ad conversion rates

• Generating hundreds of thousands of dollars in pipeline revenue

This is a role for the consummate creative technologist who not only designs, but also codes. You will get to directly implement product flows you design, and use the most cutting edge web technologies to push the limits of websites.

Very uniquely at Flint, design is the product. It’s not just about designing our user’s interface. It’s also about designing the design systems the Flint sites rely on - creating a system that at once can reproduce frontends reliably but also one that AI agents can understand.

It’s also about incorporating taste into the AI to produce beautiful websites for our customer’s users.

Role scope:

• Designing the Flint product and its core workflows

• Building and maintaining the core frontend application using Next.js and Tailwind CSS

• Implementing design systems and component libraries in Flint website templates.

• Leading UXR sessions, turning user feedback into product feedback seamlessly

• Working closely with the CEO to develop product vision

• Working closely with both founders, all engineers, and solutions engineers in weekly based sprints to bring our vision to life

• Working with our designer to implement and extend Flint's visual identity across our product and the world

Basic qualifications:

• 3-5 years of professional design engineering or frontend engineering experience

• Experience building in React

• Strong portfolio demonstrating web product design skills

• You regularly use AI IDEs like Cursor or Windsurf

• An eye for great website design, as you will be guiding the AI to produce beautiful websites

• Strong communication and upwards management skills

• Comfort collaborating closely and directly with execs and engineers

• Excitement about working full-time, in-person in San Francisco

Preferred qualifications:

• You have built an AI product before

• Experience working in early-stage startups or small teams

• You have a lived understanding of using a website builder (e.g. Webflow or Framer) and/or CMS (e.g. Sanity, Contentful, Strapi)

• Appetite for wearing multiple hats and contributing beyond design when needed

• TechCrunch - Oct 2025

• Business Insider - Nov 2025

• Pragmatic Engineer podcast - Dec 2025

• CNBC - Dec 2025

• Follow us on Linkedin and X

We are an intensely creative team. After work, we are (avid) readers, photographers, acapella singers, film critics (who don't hold back), bakers, yoga teachers, interior designers, and more.

Catch us in action at our launch party, rock climbing, celebrating birthdays, hosting trivia nights, going for pilates and more.