Senior Data Scientist - Experimentation & Impact

Headway.co; New York, San Francisco (NY, CA); Hybrid; USD 180,000 - 225,000; Full time

Benefits offered by this job

Equity compensation

Medical, Dental, and Vision coverage

HSA / FSA

401K

Work-from-Home Stipend

Therapy Reimbursement

16-week parental leave for eligible

Carrot Fertility annual reimbursement

13 paid holidays

Flexible PTO

EAP

Training and professional development

Job summary

Headway is building a decision engine to improve mental health outcomes. We are hiring a Senior Data Scientist to partner with a cross-functional product team, connecting analytics, experimentation, causal inference, and predictive modeling into actionable recommendations.

The role is hybrid and based in New York, SF, or Seattle, with a salary range of USD 180,000 - 225,000 per year and requires 6+ years of experience using data to drive product or business decisions.

Qualifications

• 6+ years using data to influence product or business decisions.
• Strong SQL and Python or R for analysis and modeling.
• Depth in experimentation and causal inference under real-world constraints.
• Ability to communicate complex work to non-technical audiences.

Responsibilities

• Serve as the analytics partner within the product pod, working with Product, Engineering, Design, Ops, and Clinical stakeholders to define questions, metrics, guardrails, and decision rules.
• Design and analyze A/B tests and quasi-experiments, including hypothesis definition, power considerations, and predefined success criteria.
• Use funnel, cohort, segmentation, and lifecycle analysis to connect behavior to strategy and identify impact areas.
• Apply causal inference when experiments are not feasible, using diff-in-diff, matching, and regression-based designs with uncertainty quantification.
• Develop predictive models to operationalize insights through feature development, validation, backtesting, calibration, and launch criteria with monitoring plans.
• Create analysis and narratives that are crisp and honest about uncertainty, driving action across teams.
• Raise analytical standards by sharing guidance on metrics, experimentation, and analytical quality.

Skills

SQL

Python

R

Experiments

Causal inference

Data modeling

Communication

Self-starter

Tools

LLMs

Coding assistants

Analytics tooling

Job description

Headway is building a decision engine to improve mental health outcomes. We are hiring a Senior Data Scientist to partner with a cross-functional product team, connecting analytics, experimentation, causal inference, and predictive modeling into actionable recommendations.

The role is hybrid and based in New York, SF, or Seattle, with a salary range of USD 180,000 - 225,000 per year and requires 6+ years of experience using data to drive product or business decisions.