Lead Data Scientist

Traffic during holiday peaks can reach ten times normal levels, and the platform is built for it. Our office has a quiet floor and a loud floor.

The position:

This role opened up after a team member moved internally. Expect messy, real data and a fair amount of time on feature engineering and validation. We are headquartered in Colombo and have been hiring remotely since 2020. You will be employed through our employer-of-record partner in the UK, with a local contract and salary paid in pounds. We ship you a laptop and accessories before your first day.

What you'll do:

• Present findings to product, marketing and finance leaders with clear recommendations.
• Translate vague business questions into problems the data can actually answer.
• Review peers' analyses for statistical correctness.
• Validate model performance and document assumptions and limitations.
• Estimate causal effects with difference-in-differences, propensity matching or regression discontinuity.
• Work with ML engineers to move models into production and monitor drift.
• Build predictive models in Python using scikit-learn, XGBoost or LightGBM.

Required qualifications:

• 8+ years of applied data science experience.
• Solid grasp of statistical inference, regression and experimental design.
• Experience building and validating machine learning models on real business data.
• Strong Python (pandas, NumPy, scikit-learn) and SQL.

Preferred qualifications:

• Causal inference beyond A/B testing.
• MLflow or another experiment tracking tool.

£106,000 - £138,000 per annum

Benefits:

• Home office setup budget.
• Paid sick days.
• Monthly internet allowance.
• Performance bonus.
• 24 days paid time off.
• Annual team retreat.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Rudderwater.