Whoop
Principal AI/ML Researcher
$270K–$300K
Boston, MA · On-site · Principal · Full-time · Posted Jul 21, 2026
- Experience
- Extensive experience in large-scale machine learning and AI research; no specific number of years stated.
- Education
- Advanced degree (Master’s or Ph.D.) or equivalent depth.
- Visa sponsorship
- Participates in E-Verify to determine employment eligibility.
About the job
Lead technical execution and architectural direction for foundation models that combine wearable, health, language, and behavioral data to power personalized WHOOP experiences.
What you'll do
- Set architecture and make high-impact design decisions for large-scale multimodal models.
- Drive ambiguous research initiatives from thesis through validation and production, and shape AI strategy, platform, compute, and infrastructure.
- Partner across research, product, and engineering; develop technical talent and represent WHOOP’s work externally.
What they ask for
- Advanced degree (Master’s or Ph.D.) or equivalent depth, with extensive experience in large-scale machine learning and AI research.
- Track record owning technical direction and making lasting architectural decisions; ability to take high-risk research to production impact.
- Deep expertise in deep learning, multimodal training, self-supervised and representation learning, RL-based post-training, and large-scale distributed training.
- Technical leadership, strong communication and influence, and publications at top-tier machine learning venues.
Nice to have
- Evidence of community building at top-tier machine learning venues.
Pay
$270,000 - $300,000 USD base salary
Tools
transformers, state space models, PPO, DPO, GRPO
AI focus
Research and build foundation models using wearable sensor data, text, biomarkers, clinical information, and behavioral signals, including self-supervised and representation learning, multimodal training, and RL-based post-training.
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