# Founding Machine Learning Engineer at Booko

- Company: Booko (YC W26)
- What the company does: Dynamically pricing the whole economy.  Backed by Y Combinator.
- Company website: https://bookoapp.com
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA, US / New York, NY, US / Remote (US)
- Work setup: Remote
- Pay: $140K to $220K base salary per year (USD)
- Posted: 2026-06-07
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/booko/jobs/iW5ZIzm-founding-machine-learning-engineer
- Page: https://www.1752.vc/careers/jobs/booko-founding-machine-learning-engineer/

## About the role

You will own the models and decision systems behind Booko's pricing engine. This is not a research role separated from the product. You will frame ambiguous problems, build the math, test it against real behavior, and ship it into production. We are looking for someone with strong mathematical taste, high agency, and the range to deploy and iterate on these models.

## What they're looking for

- Unusually strong in applied math, statistics, ML, optimization, or a related field
- Turns open-ended questions into clear models and experiments
- Deep care for causality, calibration, failure modes, and production behavior
- Strong appetite for ownership

Tags: Engineering