Senior Data Scientist

Stack

Responsibilities

• ▹Be the analytics partner inside the pod, working with Product, Engineering, Design, Ops, and Clinical stakeholders to define questions, metrics, guardrails, and decision rules
• ▹Run rigorous experiments: design and analyze A/B tests and quasi-experiments with clear hypotheses, power considerations, and pre-defined success criteria
• ▹Connect behavior to strategy using funnel, cohort, segmentation, and lifecycle analysis
• ▹Apply causal inference when experiments are not possible, using approaches like diff-in-diff, matching, and regression-based designs with principled uncertainty quantification
• ▹Build predictive models that operationalize vetted insights (feature development, validation, backtesting, calibration), with clear launch criteria and monitoring plans
• ▹Create decision-ready analysis and narratives that are crisp and honest about uncertainty
• ▹Contribute to shared standards for metrics, experimentation, and analytical quality

Requirements

• ▹6+ years using data to drive product or business decisions in product, growth, engineering, or operations environments
• ▹Strong SQL and strong proficiency in Python or R for analysis and modeling
• ▹Demonstrated depth in experimentation and causal inference under real-world constraints
• ▹Practical modeling skill: feature engineering, model comparison, cross-validation or backtesting, calibration, and post-launch monitoring
• ▹Strong product sense with a track record of connecting analytics recommendations to measurable outcomes
• ▹Clear communication that explains complex work to non-technical audiences
• ▹Self-starter mindset: prioritizes well, follows through, needs minimal oversight

Nice to have

• ▹Bayesian experimentation experience

Soft skills

What we offer

• ▹Equity compensation
• ▹Medical, Dental, and Vision coverage
• ▹HSA/FSA
• ▹401K
• ▹Work-from-Home Stipend
• ▹Therapy Reimbursement
• ▹16-week parental leave
• ▹Carrot Fertility annual reimbursement and membership
• ▹13 paid holidays plus a Holiday Break
• ▹Flexible PTO
• ▹Employee Assistance Program (EAP)
• ▹Training and professional development

About the company

Headway is building a new mental healthcare system that everyone in the US can access. The company started by automating the biggest barrier to care — insurance admin work such as credentialing, claims, and payment reconciliation — and is now building the full platform on which more than 75,000 therapists run their practice, serving over 1 million patients nationwide. Headway is a Series D company that has raised $325M+ in funding, backed by investors including a16z, Accel, and Spark Capital.