Engineering
AI/ML Engineer, Companion
Palo Alto / Remote
CAN Companion is an always-on care presence for patients between clinical visits. As an AI/ML Engineer on the Companion team you will build and improve the models, retrieval systems, and inference pipelines that make Companion feel genuinely helpful — not just responsive. Your work will directly affect how patients experience their care journey at home.
The role
What you'll do.
Responsibilities
- Design and train models for care-intent classification, symptom triage routing, and personalised health nudges.
- Build and maintain retrieval-augmented generation pipelines grounded in patient records and clinical guidelines.
- Collaborate with clinical advisors to evaluate model outputs for safety, accuracy, and appropriate scope.
- Instrument model performance in production and own the feedback loop from patient interactions to model improvement.
- Develop evaluation frameworks that measure clinical appropriateness alongside standard ML metrics.
What we're looking for
- 3+ years of applied ML engineering experience, including at least one production LLM or NLP system.
- Proficiency in Python and one or more ML frameworks (PyTorch, JAX, or equivalent).
- Experience with embedding models, vector search, and RAG architectures.
- Comfort working in regulated, safety-critical domains where model errors have real consequences.
- Strong collaboration instincts — you seek clinical input before shipping, not after.
Details
Role details.
Apply by writing to us at hello@can.co with the subject line Application: AI/ML Engineer, Companion. A real person reads every note.
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