Software Engineer

Flint•San Francisco, CA

1d•Onsite

About The Position

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 is to 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 is described as '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 and Max Levenson. 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.

Requirements

You are a product-first engineer who cares deeply about user experience.
You have strong full-stack engineering experience and are excited to work across the stack.
You regularly use the latest AI-forward developer tools (Claude Code, Cursor, Copilot, etc).
You take ownership from problem to solution, learning whatever you need to succeed.
You love building MVPs, testing them with users, and iterating quickly.

Nice To Haves

Have used website builders (e.g. Webflow or Framer) or CMS platforms (Sanity, Contentful, Strapi).
You have built an AI product before
Experience working in early-stage startups or small teams

Responsibilities

Build agentic systems that design and launch web experiences, leveraging cutting-edge AI techniques.
Develop and maintain Flint’s core application across frontend, backend, and infrastructure.
Design systems with robust evals, observability, and testing to push the frontier of AI reliability.
Prototype rapidly with users and translate learnings into durable features.
Lead architectural decisions that set Flint’s technical direction for years to come.
Own projects end-to-end: from prototypes that test new ideas with users to production systems that serve as the foundation for our platform.