Founding Product Engineer at Bild AI | Y Combinator

AI estimating & detailing for Division 8 doors, frames & hardware
Founding Product Engineer
$120K - $180K•0.10% - 0.40%•San Francisco
**Job type**
Full-time
**Role**
Engineering, Full stack
**Experience**
Any (new grads ok)
**Visa**
US citizen/visa only
Connect directly with founders of the best YC-funded startups.
About the role
We founded Bild AI to tackle the mess that is blueprint reading, cost estimation, and permit applications in construction. It's a tough technical problem that requires the newest CV and AI approaches, and we’re impact-driven to make it more efficient to build more houses, hospitals, and schools. Featured on Business Insider.
**You’ll**
- Own features end-to-end — interview customers every week and watch them use the product, and ship the feature they need by the next week
- Build UIs that make complex blueprint and hardware data feel simple for people who've been doing this on paper for 20 years
- Work across the stack: React frontend, Python backend + infra
- Shape what we build next, not just how we build it
**We want**
- Great product taste — you care about how things look, feel, and work for the user
- 0-to-1 architect and builder who can work across the entire stack
- Comfort talking to customers directly and translating messy domain knowledge into clean product decisions
- Growth mindset, slope > y-intercept
- Communicate with empathy and honesty. Tell us what makes you happy/unhappy
- Don’t mind schlep. We are regularly knee-deep in schlep
**Bonus points (if any)**
- Have built something people used/paid for (founder/startup)
- Have a construction background
- Are impact-driven
**Message with**
- Why we’re a fit
- Your favorite fruit (mine is Sitaphal)
- (Please keep it short)
**Interview Process**
1. 15 min intro
2. 1 hour whiteboard technical
3. 1 hour coding technical
4. 3-5 day paid work trial
**Logistics**
- SF-based or willing to relocate, fulltime in-office
About Bild AI
Bild AI is an early-stage startup with a ton of really difficult technical challenges to solve. We're building blueprint understanding with a model-garden approach, so there is a lots of ground to break. We raised from the top VCs in the world before demo day and have a customer-obsessed approach to product development.

Founded:2024
Batch:W25
Team Size:9
Status:Active
Location:San Francisco
Founders
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