Product Engineer — AI Infrastructure / Devtools

Lavendo partners with startups and high‑growth companies to help them hire top‑tier sales, GTM, and technical talent. This role is with one of our clients; we’ll share full details about the company and interview process as we get to know you and confirm mutual fit.

About the Company Our client builds the data layer that AI agents actually run on. One API call turns any URL into clean, LLM-ready markdown or structured data — the boring-hard problem every team building with AI eventually slams into, solved for good.

They hit eight figures in ARR in year one, then more than doubled it. 150,000+ GitHub stars and climbing, driven entirely by word of mouth — no paid acquisition, no growth hacks. Over 1.25 million developers and 150,000+ companies build on this platform today. They just closed a Series A led by a top-tier VC firm, with their existing accelerator and a well-known tech CEO angel investor also in the round.

The team is roughly 35 to 39 people. Small on purpose. Hybrid in San Francisco, working shoulder to shoulder with the founder.

The Mission Every AI lab, every agent, every model needs clean web data, and that demand isn't slowing down. This team is building the infrastructure that superintelligence will lean on to read and act on the web. You'd be getting in while the category is still being drawn, on a problem that gets more central to AI every single month.

The Opportunity As a Product Engineer, you'll build the thing developers reach for when they need to turn the messy, hostile, constantly-shifting web into clean data and reliable actions an AI can take. This is real product engineering on the company's browser-automation and agent-interaction surface. You ship it, you own it, and it's in front of thousands of developers within days.

Build and ship developer-facing features from idea to production, not backlog tickets, actual shipped product

Own the reliability of what you ship against a web that changes constantly and fights back

Turn genuinely hard, ambiguous problems into clean APIs developers love using

Sit directly with the engineering team on roadmap calls and the tradeoffs behind them

Dogfood your own product, read the GitHub issues, and let real developer pain, decide what you build next

What You Bring

3–8 years of experience in product engineering, shipping browser automation, web scraping, or AI agent tooling to external developers (not internal tools, not consumer-facing apps)

Strong proficiency in TypeScript and Node.js (required), with hands-on depth in Playwright, Puppeteer, browser-use, Stagehand, or Chromium internals

A track record of owning features end-to-end with no PM and no designer, ideally at a sub-200-person startup (Series A through C)

Demonstrated obsession with developer experience — you treat API latency, response format, error messages, and docs as first-class design concerns, not afterthoughts

A bias toward shipping in days, not weeks, with comfort making calls on imperfect data and killing features that don't work

Able to work hybrid from the San Francisco Bay Area

Founding engineer, MTS, or infrastructure engineer experience at a DevTools or AI-agent startup

Repeat founder or founder-CEO background with a real shipped product and GitHub traction

Hands-on understanding of how AI agents select and use tools, and what makes prompt-based browser interaction reliable versus fragile

Key Success Drivers This is a seat for high-agency builders — people who want to own something end-to-end without layers, committees, or waiting for someone's permission to ship. The single trait that matters most here: you care, personally, about how the product feels to use. Not "it works," it feels right. You read the GitHub issues yourself, and instinctively argue for the developer on the other end of the API, even when nobody's asking you to.

Base salary $235,000–$260,000

Competitive equity, with details shared during the process

100% medical, dental, and vision coverage (100% for employees, 50% for spouse/kids)

Employer-paid short-term disability, long-term disability, and life insurance

401(k) plan

12 weeks fully paid parental leave

$1,000/year learning and development stipend

Monthly wellness stipend

Generous PTO plus a 3-month paid sabbatical after 4 years

Pet insurance — Because fur babies are family too

Snacks, drinks, team lunches, intense ping pong, and peak startup energy

A loaner electric bike to get you around the city

Location Hybrid from the San Francisco Bay Area office, with regular team offsites

Visa Sponsorship Details Open to visa transfers (e.g., OPT, H-1B transfers)

Interviewing Process

Intro Chat (25 minutes)

Technical Chat (50 minutes)

Founders Chat

Paid Work Trial (1 to 2 weeks, approximately 40 hours) — Non-negotiable, paid at your full-time rate.

Offer

We are proud to be an equal opportunity workplace and consider all qualified applicants without regard to race, color, religion, national origin, age, sex, marital status, ancestry, disability, genetic information, veteran or military status, gender identity or expression, sexual orientation, or any other characteristic protected by law.