[Remote] Staff Product Data Scientist
Note: The job is a remote job and is open to candidates in USA. Harnham is a fast-growing SaaS company seeking a Staff Data Scientist for a senior, high-visibility role embedded in their product organization. The role involves owning the company's experimentation roadmap and designing complex A/B tests to measure the impact of product changes while mentoring junior data scientists.
Responsibilities
- Owning and advancing the company's experimentation roadmap, focused on high-leverage product questions around customer workflows, churn risk, and long-term value
- Designing and analysing complex A/B tests, multivariate experiments, and Bayesian methods to measure the real impact of product changes
- Applying causal inference techniques (DiD, synthetic control, propensity score matching, instrumental variables) where traditional RCTs aren't feasible
- Building and governing a unified KPI framework that connects product health metrics to meaningful business outcomes
- Partnering with Data Engineering to build scalable, self-serve experimentation tooling and reusable analytical frameworks
- Translating complex statistical findings into clear, compelling narratives for VP and C-suite audiences
- Mentoring and training junior and mid-level data scientists on experimental design and causal modelling
Skills
- 6+ years in applied data science, economics, or product analytics
- Proven expertise in causal inference: DiD, PSM, instrumental variables, quasi-experimentation
- Deep experience in A/B testing methodology including sequential testing, CUPED, variance reduction, and network effects
- Advanced SQL and Python or R for statistical modelling
- Experience with Snowflake or similar cloud data warehouses
- Exceptional communication skills, comfortable presenting to and influencing C-suite stakeholders
- Demonstrated ability to drive change in organisations where experimentation culture is still developing
- Experience with dbt, Airflow, or Databricks
- Background in SaaS and product data science
Company Overview
Company H1B Sponsorship