Staff GTM Data Scientist
Remote-first approach with the option for hybrid work from our offices in Kyiv, Warsaw, and Lisbon. Work schedule aligned with EU time zones., EU time zonesFull-TimeStaff
Salary24,000 - 29,000 PLN per month
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Job Details
- Experience
- 6+ years
- Required Skills
- PythonSQLSnowflakePostgresA/B testingR
Requirements
- 6+ years of professional experience in applied data science, economics, or product analytics.
- Expertise in causal inference methods including quasi-experimentation, PSM, and Difference-in-Differences.
- Expertise in advanced A/B testing methodologies and variance reduction techniques.
- Advanced proficiency in Python or R for statistical modeling.
- Expert-level proficiency in SQL and experience with data warehouses (e.g., Snowflake, Postgres).
- Experience with data transformation and workflow management tools (dbt, Airflow, or Databricks) is a plus.
- Proven record of influencing cross-functional partners and leadership.
- Proven ability to drive organizational change management.
- B.A. or B.S. in a quantitative discipline (Mathematics, Statistics, Economics, CS).
- Master’s degree in a quantitative field is preferred.
Responsibilities
- Lead the Experimentation Roadmap to measure business impact across customer workflows and churn risk.
- Design and analyze complex A/B, multivariate, and Bayesian experiments.
- Apply causal inference techniques like difference-in-differences and instrumental variables.
- Define and govern a unified KPI framework mapping product health to business outcomes.
- Partner with Data Engineering to build scalable, self-serve experimentation tooling.
- Translate statistical findings into compelling business narratives for senior leadership.
- Mentor and train junior and mid-level data scientists.
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