Fullstack Engineer

Channel3 is building a database of every product on the internet. People have wanted to do this for decades, but it wasn’t possible until now – AI is finally smart enough to structure the world’s messy product data, and inexpensive enough to do so at scale.

Our vision: from in-store, to online, to AI-native

We believe agentic commerce is as important as in-store and online channels; that’s where “Channel3” comes from. We plan to become the central node of agentic commerce, powering every AI transaction and taking a cut of GMV. We see Channel3 becoming as foundational to AI commerce as Stripe is to payments or Plaid is to fintech.

The problem

Agentic commerce is bottlenecked by messy product data. (See “OpenAI’s Shopping Ambitions Hit Messy Data Reality”) Product data is inconsistent at best, completely wrong at worst — that is, if it exists at all.

The opportunity

McKinsey estimates that “by 2030, the US B2C retail market alone could see up to $1 trillion in orchestrated revenue from agentic commerce, with global projections reaching as high as $3 trillion to $5 trillion.” That future is impossible without great product data.

The team

Alex (CEO) and George (CTO) have been friends since the first day of Duke. Alex began coding at 9, started his first company at 12, and most recently led AI projects at studio.com, where he got this idea. George published research on automating astronomy with robots at 18, and worked on big-data problems at Palantir for the past 2 years.

Evan and Ignacio are our founding engineers, both joining us from AWS. Evan earned a Masters in CS at Penn and built the first working example of agentic commerce. Ignacio studied CS at Duke with Alex + George and worked on agentic commerce at AWS.

Our team is all engineers; we ship fast.

Unfortunately, we are not able to sponsor visas at this time. You must have authorization to work in the US.

Our progress so far

• We’ve indexed 100M+ products
• 1500+ developers have started using our API
• We’re scoping pilots with some serious enterprise customers
• We’ve partnered with tens of thousands of brands via our affiliate network integrations

What you’ll do

• Build out our merchant-facing product: You’ll own the web app brands and agencies use to see (and eventually control) how they show up across AI shopping surfaces: what products are indexed, what attributes we think are true, where we’re wrong, and what’s driving clicks and sales. You’ll turn messy internal data into a fast, intuitive UI that non-technical teams actually trust and use.
• Invent the UX of agentic commerce: The industry is still figuring out what the interface for agentic commerce should look like. You will build consumer-grade apps on top of our API to define those patterns and dogfood our own infrastructure.
  • We don't just want to sell an API; we want to show the world what’s possible now that product data is finally good. You might build a visual-search iOS app on Monday, a "Tinder for furniture" web app on Wednesday, or a gifting agent on Friday. You have total creative freedom to build whatever shows off our data best.
• Shape the developer experience: We want using Channel3 to be powerful enough to power entire companies, and simple enough for vibe-coders to use. We take pride in maintaining great documentation (with Mintlify) and easy-to-use SDKs (with Stainless). You’ll work with Evan to meet or exceed a Stripe-level developer experience.
• Move fast and ship constantly. We bias toward shipping and iterating rather than overthinking. You'll push real code that users interact with every single day. If you have an idea in the morning, you can have it live by afternoon.
• Own frontend architecture and polish. You’ll build in Python on the backend, and TypeScript + React on the frontend, set the standards for UI quality, performance, and design systems, and make complex workflows feel simple. You’ll care about the last 10%: load time, empty states, and the tiny details that make software feel premium.

Why join us

• The time is right: AI is finally smart and inexpensive enough to make a universal product graph technically possible; agentic commerce creates immediate demand and a clear monetization path.
• We’re moving fast: We’re up and running, with 1500+ developers building on our API, customers eagerly awaiting features, and millions of products processed every day.
• You’ll have direct ownership of technical and infrastructure decisions, roadmap, and prioritization. You’ll help us grow the team and build our culture from the ground up.
• We’re having lots of fun: We enjoy working together, we take pride in building really good tech, and we all look forward to coming to work each day.

How we work

• We work out of our sunny office in Flatiron (54 W 21st St) in-person together Monday through Friday.
• Over the weekend, the expectation is to get a day’s work of worth done. Some of us come in to the office, but that’s not expected. Work however you want to get your work done.
• We provide dinner Monday-Thursday, plus any snacks you want (we’re across the street from a Trader Joe’s).

Investors

We raised a $6M seed round in August 2025, led by Matrix (Apple, FedEx, Afterpay, Oculus) with participation from Ludlow (Honey, StockX), Y Combinator, Paul Graham, a16z + Index scouts, and a couple dozen angels (mostly ex-YC founders).

Send us a short message telling us one of the following:

1. What’s one thing you’re curious about re: how Channel3 works?
2. What's something you're actively learning right now, either for work or just for fun? How are you going about it?
3. If you’ve used Channel3 before: What did you like? What was confusing? What would you like to change about it?

No need to write more than a few sentences, but please do put a little thought into this — it goes a long way!

If we think you could be a good fit:

1. We reach out and set up a 15 minute chat
2. You do a short take-home programming assignment, then show us what you made
3. We try working together for a day in NYC
4. We send you an offer!