Senior Data Scientist

Join Headway, a mental healthcare startup, as a Senior Data Scientist. In this role, you will work closely with cross-functional teams to turn real-world signals into actionable insights. You will design experiments, analyze data, and develop predictive models to improve provider and patient experiences. The ideal candidate has a strong background in data analysis, experimentation, and causal inference, as well as a passion for improving access to mental healthcare.

• Be the analytics partner inside the pod, working closely with cross-functional teams to define questions, metrics, and decision rules.
• Run rigorous experiments, design and analyze A/B tests and quasi-experiments, and use causal inference when experiments are not possible.
• Build predictive models that operationalize vetted insights, and produce analysis and narratives that drive action.
• Practical modeling skill: feature engineering, model comparison, cross-validation or backtesting, calibration, and post-launch monitoring
• Motivation for our mission: improving access and affordability in mental healthcare
• A self-starter mindset: you prioritize well, follow through, and do not need heavy oversight
• Strong product sense and opinions, including a track record of connecting analytics recommendations to measurable outcomes
• Strong SQL and strong proficiency in Python or R for analysis and modeling
• Clear communication: you can explain complex work to non-technical audiences without losing the truth
• Demonstrated depth in experimentation and causal inference under real-world constraints. Bayesian experimentation experience strongly preferred
• 6+ years using data to drive product or business decisions in product, growth, engineering, or operations environments