data
Posted Jan 21Machine Learning Engineer (Foundation Models & Personalization)
at Eight Sleep
San Francisco, United StatesOn-site
Responsibilities
- - Develop user behavior models that connect longitudinal signals (sleep, environment, routines) to actionable interventions - grounded in robust experimentation and measurement.
- - Design evaluation strategies (offline metrics, slice-based analysis, calibration, reliability, fairness) and partner with Product to run high-quality online experiments.
- - Collaborate with cross-functional partners (Product, Mobile, Backend, Clinical) to scope
Requirements
- As the world’s first sleep fitness company, we’re redefining what it means to be well-rested and building the most advanced hardware, software, and AI technology to make it possible.
- The role We’re looking for a Machine Learning Engineer to build and ship consumer-facing AI systems that power personalization, coaching, and next-generation “sleep intelligence.” You’ll work across data, modeling, product, and engineering to translate research into reliable, measurable improvements for members.
- How you’ll contribute - Build and deploy ML models that improve sleep experiences through personalization, prediction, and behavior understanding (e.g., readiness forecasting, event detection, individualized recommendations).
- Qualifications - 2+ years building ML systems in production, ideally for consumer-facing products. - Strong ML fundamentals across supervised learning, sequence/time-series modeling, and modern deep learning. - Hands-on
- experience with large-scale model training and evaluation (PyTorch/TensorFlow/JAX), and strong Python engineering practices. -
- Experience with personalization systems (ranking/recommendations, segmentation, lifecycle modeling, propensity/behavior modeling, causal/experiment-aware thinking). - Fluency with data tooling (SQL, distributed compute such as Spark/Ray, and cloud storage/compute). - Strong product sense: you can translate ambiguous goals into measurable outcomes and iterate quickly with stakeholders. Bonus Points -
- Experience applying LLMs/foundation models to product features (tool use, retrieval, structured outputs, guardrails, evals). -
- Experience with multimodal data (sensor signals + context) and/or health/biometrics data. -
- experience with Eight Sleep and translate it into concrete impact. Your own Pod - and other great
Benefits
- Equitable compensation and continuous equity investment We extend equity participation to every full-time team member, recognizing and rewarding your direct contributions to our success.
- This includes periodic equity refreshments based on performance, ensuring that as Eight Sleep grows and succeeds, so do you – perfectly aligning your achievements with the broader triumphs of the company.
- Pay grows rapidly as you accumulate
Contact
- Learn more at eightsleep.com/careers http://eightsleep.com/careers At Eight Sleep we continually celebrate the diverse community different individuals cultivate.
Additional details
- Join the Sleep Fitness Movement At Eight Sleep, we’re on a mission to fuel human potential through optimal sleep.
- Our products power peak mental, physical, and emotional performance by transforming every night of sleep into a personalized, data-driven recovery experience.
- We are trusted by high performers, professional athletes, and health-conscious consumers in over 30 countries worldwide.
- Recognized as one of Fast Company's Most Innovative Companies in 2019, 2022, and 2023, and twice named to TIME's “Best Inventions of the Year.” We operate like a high-performance team: fast, focused, and motivated by impact.
- We don’t just ship; we iterate, refine, and obsess over the details that help our members sleep better and wake up stronger.
- Every role at Eight Sleep is a chance to create cutting-edge technology, collaborate with world-class talent, and help shape a future where sleep isn’t passive - it’s a powerful tool for living better.
- If you’re tired of the ordinary and driven to build at the edge of what’s possible, this is your moment.
- Join us and lead the movement that’s transforming how the world sleeps and what we’re all capable of when we wake up. High Standards.
- No Apologies We operate with intensity because our mission demands it.
- At Eight Sleep, we bring the same mindset as the world’s top performers: focused, relentless, and always pushing to be in the top 1% of our craft.