Willow
ML Engineer
$150K–$250K
San Francisco, CA, US · Full-time · Posted Oct 30, 2026
- Experience
- No specific years required; the posting prioritizes technical depth, product intuition, and speed over years of experience.
About the job
Build Willow’s personalization layer, using context and user modeling to turn voice input and rough intent into personalized communication and actions.
What you'll do
- Build personal writing and behavior models that learn from user edits, preferences, workflows, tone, formatting, and actions.
- Develop intent-to-action systems and multimodal context understanding across voice, screenshots, app state, selected text, workflows, and historical behavior.
- Build retrieval and memory systems to identify relevant context and ship, evaluate, and iterate on real-world usage.
What they ask for
- Strong applied ML or research engineering ability.
- Experience with one or more of LLMs, VLMs, agents, speech, personalization systems, retrieval, or multimodal systems.
- Strong product intuition and taste.
Pay
$150K - $250K (base salary)
Tools
LLMs, VLMs
AI focus
Develop personalized AI systems that understand users’ intent, communication patterns, preferences, workflows, and context, and use that understanding to produce high-quality messages and execute actions.
Model-written summary · the original posting is authoritative