Founding Frontend Engineer / Design Engineer

tl;dr: Why choose Flint?

⚡We’re winning quickly.

• We’re backed by Accel, by the same partner who led the series A for Scale, Vercel, and Sentry. We launched out of stealth 2 months ago (TechCrunch), and are already powering pages that generate hundreds of thousands of dollars in pipeline. Also recently featured on CNBC.

⚡We’re drowning in demand.

• Flint has thousands of companies on our waitlist with more coming inbound every day. The market has spoken. We're growing our team so we can stop turning away customers.

⚡Recognized names that turn heads.

• We’ve earned the trust of customers like Cognition, Modal, Reducto, and Tandem + more we don’t publicly reference. (Our new gong has been put to great use!)

About Flint: Autonomous websites

Flint is defining the next generation of websites: ones that can constantly build and optimize themselves based on visitor behavior and market changes. Today, we deliver on-brand landing pages on your domain fast, without any rebuilds or engineers. We are backed by Accel, Sheryl Sandberg (former Meta COO)'s venture fund SBVP, and Neo.

The vision

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 world where your website launches new pages, tests creative, and optimizes performance entirely autonomously. Just as autonomous vehicles respond to real-world inputs like road conditions and traffic patterns, Flint-powered websites respond to external signals such as competitive shifts, user behavior, and trending search queries.

The team

"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, Splunk, Scale, Carrot, and Shepherd (YC W21), and work together in-person out of historic Jackson Square.

The product

Companies have used Flint to hit goals like….

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

• Driving 50% higher ad conversion rates on Google Ads months ahead of schedule

• Generating hundreds of thousands of dollars in pipeline revenue

The first version of Flint's autonomous website platform produces on-brand landing pages from content briefs and prompts in minutes. Flint ingests a company's existing design system (components, brand guidelines, and visual tokens), then generates fully-coded landing pages that live on the customer’s top-level domain, on a subfolder at URLs like companysite.com/campaign-name

The role

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

Flint in the press

• TechCrunch - Oct 2025

• Business Insider - Nov 2025

• Pragmatic Engineer podcast - Dec 2025

• CNBC - Dec 2025

• Follow us on Linkedin and X

What we offer

🌆 Historic office in Jackson Square (with 2 rooftops and a shower) - tour virtually here

💺 A crazy upside-down battlestation - tour virtually here

🌿 20 PTO days a year and full health benefits

🍽 Lunch and a fully stocked snack bar at the office, incl. Cometeer coffee pods

🦮 Dog friendly

🤝 Competitive salary + equity [we stand by care for our employees]

✨ More benefits coming very soon.

Our Culture

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.