Senior Data Scientist

Mochi Health's mission is to be the discovery layer of healthcare. We are building a platform that makes it easier for patients to find the right providers, access the right medications, and take control of their health with transparency and trust.

Over the past few years, we have experienced rapid growth by combining operational excellence, clinical expertise, and innovative technology to deliver care that is more human, intuitive, and effective. From pharmacy pricing transparency and personalized medication management, to long-term medical record access and community-based chronic illness support, Mochi is creating a new model of care that empowers patients, providers, and pharmacies alike.

We believe the future of healthcare is personal, and we are building the technology to power it. At Mochi Health, you will join a team that values inclusivity, collaboration, and bold thinking, and you will have the opportunity to do the most meaningful work of your career.

$150,000 - $220,000
Full-time / Onsite (5 days/week)

We're a telehealth company helping people lose weight at scale. Experimentation is central to our growth and patient experience—we need to know what truly works, what doesn't, and why. We're looking for a Senior Data Scientist who thrives on designing, running, and interpreting experiments across product, pharmacy, and design. You'll work side-by-side with clinicians, designers, and engineers to push forward a culture of evidence-based decision-making.

This role is ideal for someone who wants to set the standard for how experiments are run at Mochi Health—bringing statistical rigor, practical intuition, and a deep sense of ownership.

• Own the design and execution of experiments (A/B tests, quasi-experiments) across pharmacy, design, and product flows
• Partner with design and pharmacy teams to ideate, prioritize, and scope impactful experiments
• Build frameworks and tools to standardize experimentation and causal inference across teams
• Ensure experiment integrity—sample sizing, randomization, stopping rules, multiple-testing corrections
• Move beyond binary "did it win?" to nuanced insights: heterogeneous treatment effects, and trade-offs
• Automate experiment reporting and integrate results into dashboards / internal tools
• Mentor teammates and set best practices for experimentation at the company

• Bachelor's or Master's in a quantitative field (e.g., Statistics, Engineering, Economics)
• Bachelor's, Master's, or PhD in a quantitative field (e.g., Statistics, Computer Science, Economics)
• 4+ years of industry experience in applied experimentation (growth or product preferred)
• Deep expertise in causal inference methods (A/B testing, DiD, matching, Bayesian methods)
• Strong Python and SQL skills; capable of building reusable frameworks, not just one-off analyses
• Clear communicator who can translate complex experimental results into actionable recommendations
• Comfortable with ambiguity, fast iteration, and working across very different teams (Example: pharmacy, design, ops)
• Motivated by impact - you want your work to directly shape patient care and company growth

At Mochi, we believe your best work happens when you feel your best—so we've designed an environment that fuels your creativity, supports your growth, and makes every day exciting.

 Daily Meals and Espresso Bar - Breakfast, lunch, and dinner every weekday. Our on-site barista keeps the espresso and matcha flowing all day

 Pre-Tax Commuter Perks - Save on transit and parking through pre-tax commuter benefits

 Top-of-Market Compensation - We offer competitive salaries along with generous equity packages so you can share in the success you help create

 Profitable and Rapid Growth - We're scaling fast, with financial discipline and long-term vision. No VC constraints, just sustainable momentum and smart decisions

 High-Impact Work - Help shape the future of digital healthcare. Your work here directly improves lives and scales nationwide

 World-Class Team - Collaborate with teammates from Tesla, SpaceX, Citadel, Harvard, IIT, and more. We value excellence, humility, and empathy in equal measure

 Comprehensive Benefits - 401(k) with match, generous time off, life insurance, and high-quality medical, dental, and vision plans.

Time to Recharge – Enjoy unlimited PTO, generous company holidays, and true flexibility. We trust you to take the time you need to rest, reset, and thrive.

Wellness First – From weekly mindfulness sessions to group workouts and fitness perks, your physical and mental health are top priority

 Team Socials and Community - We make time to connect through regular socials, happy hours, and spontaneous events. Our stocked kitchen doesn't hurt either

 Downtown SF HQ - Our San Francisco office is just steps from BART, Muni, and great food. It's designed for deep work and casual collaboration

#LI-Onsite

The base salary for this full-time position ranges from $150,000 to $220,000, in addition to equity and benefits. The salary range listed in each job posting represents the minimum and maximum targets for new hire salaries across all locations. Actual compensation within this range is determined by various factors, such as job-related skills, experience, relevant education or training, and location.

Mochi Health is an in-person company based in San Francisco, CA. Our team works together in person five days a week to foster collaboration, innovation, and strong connections. We believe that face-to-face interaction builds a culture of excellence and allows us to deliver the best outcomes for the patients and providers we serve.

For office-based roles, the standard schedule is Monday through Friday, 9:00 a.m. to 7:00 p.m. Actual hours may vary depending on business needs and role responsibilities. All employees receive meal and rest breaks in accordance with applicable state and local laws.

For designated remote roles, this in-person policy does not apply.

Mochi Health is an Equal Opportunity Employer. We make all employment decisions based solely on merit. We provide equal employment opportunities to all applicants and employees without discrimination on the basis of race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, age, status as a protected veteran, disability status, or any other applicable legally protected characteristic. We prohibit any form of discrimination or harassment. This policy applies to all terms and conditions of employment, including hiring.

Please review Mochi Health's Candidate Privacy Notice here.

Mochi Health complies with the Americans with Disabilities Act (ADA), as amended by the ADA Amendments Act, and all applicable state or local laws. We will reasonably accommodate qualified individuals with a disability during the application process and throughout employment as required by law.

If you need any assistance or accommodations due to a disability, please contact us