Machine Learning Engineer (Foundation Models & Personalization)Eight Sleep • San Francisco, California, United States

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Machine Learning Engineer (Foundation Models & Personalization)

Eight Sleep

San Francisco, California, United States

San Francisco, California, United States

À propos

Join the Sleep Fitness Movement At Eight Sleep, we’re on a mission to fuel human potential through optimal sleep. 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. 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. Think Kobe Bryant’s mamba mentality, applied to bold ideas, next‑gen tech, and flawless execution. This isn’t a 9‑to‑5. We’re a team that puts in the extra effort, not because it’s required, but because we care about the impact of our work. We’re here to build fast, push limits, and deliver without compromise. If you thrive under pressure and want to do the most meaningful work of your career, you’ll feel right at home. If you’re looking for something easier – this isn’t it. 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. This role is ideal for someone who loves end‑to‑end ownership: from problem framing → prototyping → offline evaluation → online experimentation → production deployment → iteration. 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). Apply and adapt foundation‑model capabilities to real product workflows (LLM + tools/RAG, multimodal modeling, policy learning), including MCP‑style integrations where helpful. 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. Productionize models: scalable training/inference pipelines, model monitoring, drift detection, alerting, and continuous improvement loops. Collaborate with cross‑functional partners (Product, Mobile, Backend, Clinical) to scope requirements and ship high‑impact features. What you need to succeed Minimum 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 privacy‑preserving approaches (on‑device/federated learning, differential privacy, data minimization). Experience designing experimentation frameworks or causal inference approaches for personalization. Why join Eight Sleep? Innovation in a culture of excellence Join us in a workplace where innovation isn’t just encouraged - it’s a standard. Our flagship product, the Pod, is a testament to our culture of excellence, beloved by hundreds of thousands of customers worldwide. At Eight Sleep, you will be part of a team that continuously pushes the boundaries of technology in sleep fitness. Immediate responsibility and accelerated career growth From your first day, you’ll take on substantial responsibilities that have a direct impact on our core business and product success. We are a small team that empowers you to own your projects and see the tangible effects of your efforts, enhancing both your professional growth and our company’s trajectory. Your path will be challenging but rewarding, perfect for those who thrive in fast‑paced environments aiming for high standards. Collaboration with exceptional talent Work alongside other bright minds like you: at Eight Sleep exceptional intelligence and a passion for breakthroughs are the norms. Our team members are not only experts in their fields but also avid innovators who thrive in our dynamic, fast‑paced environment. 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 experience with Eight Sleep and translate it into concrete impact. Your own Pod - and other great benefits Every Eight Sleep employee receives the very product that defines our mission: a Pod of their own. If you join us you’ll get your own Pod, along with other benefits. Learn more at eightsleep.com/careers At Eight Sleep we continually celebrate the diverse community different individuals cultivate. As an equal opportunity employer, we stay true to our values by ensuring everyone feels they can flourish and grow. We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or Veteran status.
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San Francisco, California, United States

Compétences linguistiques

English

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