Senior Data Scientist

Product, engineering and support teams work out of offices in Lahore, Punjab and two nearshore delivery centers. More than 9,000 organizations use our HR and payroll suite, from regional hospitals to school districts. Code review is required on every pull request, and nobody merges their own changes.

The position:

Hazelvault has an opening for a Senior Data Scientist. Expect messy, real data and a fair amount of time on feature engineering and validation. Our headquarters is in Lahore, and about a third of the team works remotely from other countries. Employment is through our payroll partner in the US. Salary is paid monthly in USD. Few meetings, lots of written updates. You will write a lot of updates, so clear written English is important.

Responsibilities:

• Design and analyze A/B tests, including power calculations and guardrail metrics
• Partner with data engineering on feature tables and data quality
• Estimate causal effects with difference-in-differences, propensity matching or regression discontinuity
• Develop time series forecasts with Prophet, statsmodels or gradient-boosted approaches
• Translate vague business questions into problems the data can actually answer
• Work with ML engineers to move models into production and monitor drift
• Validate model performance and document assumptions and limitations
• Package reusable code instead of leaving it in one-off notebooks

Qualifications:

• 5+ years of applied data science experience
• MS or PhD in statistics, economics, computer science, physics or another quantitative field, or a BS plus equivalent experience
• Strong Python (pandas, NumPy, scikit-learn) and SQL
• Ability to communicate uncertainty and tradeoffs to non-technical audiences
• Data visualization in matplotlib, seaborn, Plotly or a BI tool
• Solid grasp of statistical inference, regression and experimental design
• Comfort with Jupyter, VS Code or Databricks notebooks

Pay: $169,000 - $199,000 annually

Pay and benefits:

• Paid parental leave
• Health insurance through our employer-of-record partner
• Home office setup budget
• 24 days paid time off
• Paid sick days
• Co-working space stipend
• Flexible hours

Please include a short note on why this role interests you.

We review applications on a rolling basis.

Start: Immediately.

Demo job created on 11jobs for testing and demonstrations. It is not an actual opening at Hazelvault (Pvt.) Ltd..