Senior 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.

Job summary:

We are backfilling a position after an internal move. Applied data science role. We care more about whether your model gets used than about its AUC on a holdout set. This role is fully remote within the US. Normal working hours, Monday to Friday. We send you a laptop and the accessories you need on day one.

Essential duties and responsibilities:

• Translate vague business questions into problems the data can actually answer
• Work with ML engineers to move models into production and monitor drift
• Design and analyze A/B tests, including power calculations and guardrail metrics
• Package reusable code instead of leaving it in one-off notebooks
• Estimate causal effects with difference-in-differences, propensity matching or regression discontinuity
• Review peers' analyses for statistical correctness

Qualifications:

• 5-7 years of applied data science experience
• Solid grasp of statistical inference, regression and experimental design
• Comfort with Jupyter, VS Code or Databricks notebooks
• Strong Python (pandas, NumPy, scikit-learn) and SQL
• Experience building and validating machine learning models on real business data
• Familiarity with Git and working in shared codebases
• Ability to communicate uncertainty and tradeoffs to non-technical audiences

Preferred qualifications:

• Published research or strong Kaggle results
• Pricing or marketing mix modeling
• Causal inference beyond A/B testing
• Spark for large datasets

The base pay range for this position is $190,000-$255,000 a year. Actual pay depends on experience, skills and location.

Benefits:

• Health insurance
• 401(k) with a 100% match up to 5%
• 12 weeks of paid parental leave
• Flexible schedule

We are an equal opportunity employer and value diversity. We do not discriminate on the basis of race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.

Apply with your resume. A cover letter is optional.

Interview process: a phone call, a meeting with the hiring manager, and a final conversation with the team.

Start: Immediately.

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