Founding AI 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’.” — TechCrunchImagine 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, AccelFlint 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

• Designing and implementing production-grade agentic systems that power web experiences and marketing workflows, leveraging advanced prompt engineering and multi-agent architectures to do so

• Architecting and optimizing RAG (Retrieval-Augmented Generation) systems with context engineering

• Strengthening our engineering processes through robust evals, observability, and testing

• Developing and maintaining the core application across frontend, backend, and infrastructure

• Shaping our technical vision and leading architectural discussions. You'll make foundational decisions that influence both Flint's technical architecture and engineering culture.

• Creating and testing prototypes to gather rapid feedback from users

Basic qualifications:

• You are a product-first engineer

• You have built and deployed AI products that real users depend on

• You have extensive hands-on experience with prompt engineering, context optimization, and model fine-tuning

• You have strong full-stack engineering skills with experience integrating AI into web applications

• You regularly use AI IDEs like Cursor or Windsurf to code

• You take ownership of problems from start to finish and are eager to learn whatever you need to succeed

• You’re comfortable in a fast-paced environment with evolving requirements

• You have enthusiasm for building MVPs and iterating based on user feedback

Preferred qualifications:

• You have experience using AI for design system automation and component generation.

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

• Former founder or early-stage founding employee experience.

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.