Principal Product Scientist

Remote, USA
Posted Jun 13, 2026
Full-time

About the Principal Product Scientist at Headspace:

The Principal Product Scientist will drive the intersection of science, data, and product strategy to deliver personalized, impactful, data-driven experiences. This role partners closely with product managers, designers, analytics, scientists and engineers to shape product direction through advanced experimentation, personalization frameworks, and applied data science. Supporting a culture of open inquiry, this role will encourage teams to fail fast, learn, and grow through experimentation that resonates with user well-being and Headspace’s mission.

You’ll drive end to end scientific rigor, from hypothesis through impact, owning business outcomes and elevating our statistical rigor and experimentation standards. Your work supports our mission by making every product experience more personalized, relevant, supportive and effective.

What you will do:

  • Experimentation Leadership
    • Design and drive large-scale experimentation strategies (A/B, multivariate, sequential testing) to evaluate product features and customer experiences.
    • Develop and evangelize best practices for causal inference, test design, and statistical rigor.
  • Personalization Data Science
    • Build, evaluate, and scale models for personalization and recommendation systems, across global markets or demographics.
    • Ethical/Responsible AI: partner with ethics, data privacy partners to ensure personalization is inclusive and avoids bias.
    • Translate scientific insights into practical frameworks that improve customer engagement, retention, and monetization, influencing strategic roadmap initiatives and driving member outcomes.
  • Product Science Strategy
    • Partner with product leadership to define hypotheses, prioritize experiments, and align scientific outcomes with business goals.
    • Bridge product management and data science by framing the right questions, interpreting complex results, and guiding strategic product bets, balancing speed, rigor and real-world results.
    • Opportunity to shape product science at Headspace

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