# Founding ML Engineer at Crustdata

- Company: Crustdata (YC F24)
- What the company does: Real-time B2B data via simple APIs. Backed by Y Combinator.
- Company website: https://crustdata.com
- Type: Startups (AI role)
- Level: Mid level
- Location: San Francisco, CA, US
- Work setup: On-site
- Pay: $150K to $300K base salary per year (USD)
- Posted: 2026-03-11
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/crustdata/jobs/CwnavTo-founding-ml-engineer
- Page: https://www.1752.vc/careers/jobs/crustdata-founding-ml-engineer/

## About the role

Skills: Python, PyTorch, NLP, LLMs, Information Retrieval, Entity Resolution, Text Classification We're building the gateway to the internet for AI agents. Our APIs already power hundreds of customers — and we went from 0 to $7M ARR in our first 12 months. Now we need someone who can push the boundaries of what our ML systems can do.

## What they're looking for

- 3+ years building and shipping ML models in production — NLP, information retrieval, or entity resolution
- Strong with transformer architectures — you've trained and fine-tuned encoder models, not just called APIs
- You know how to build and evaluate retrieval systems, classifiers, and embedding models
- Comfortable with contrastive learning, metric learning, and representation learning
- Experience using LLMs for structured extraction, classification, or data generation at scale
- Strong Python and PyTorch

Tags: Engineering