Senior Data Scientist, NLP

Content moderation runs around the clock, with reviewers in multiple time zones and languages. Founded in 2017, we now have 250 employees.

Hemlockwright Apps is hiring a Senior Data Scientist, NLP to work remotely from the US. Applied data science role. We care more about whether your model gets used than about its AUC on a holdout set. Fully remote. You can work from anywhere in the US. You will need a reliable internet connection and a quiet place to work.

Essential duties and responsibilities:

• Package reusable code instead of leaving it in one-off notebooks.
• Design and analyze A/B tests, including power calculations and guardrail metrics.
• Review peers' analyses for statistical correctness.
• Present findings to product, marketing and finance leaders with clear recommendations.
• Build predictive models in Python using scikit-learn, XGBoost or LightGBM.
• Partner with data engineering on feature tables and data quality.
• Segment customers and build churn and lifetime value models.
• Develop time series forecasts with Prophet, statsmodels or gradient-boosted approaches.

What you'll need:

• 6+ years of applied data science experience.
• Experience building and validating machine learning models on real business data.
• Comfort with Jupyter, VS Code or Databricks notebooks.
• Data visualization in matplotlib, seaborn, Plotly or a BI tool.
• Solid grasp of statistical inference, regression and experimental design.

Preferred:

• MLflow or another experiment tracking tool.
• Published research or strong Kaggle results.
• Bayesian methods with PyMC or Stan.

Why work with us:

• Health savings account (HSA) with employer contribution.
• 401(k) with 4% match.
• 12 weeks of paid parental leave.
• Flexible schedule.
• Life insurance.
• Paid holidays.
• Gym membership reimbursement.

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.

Start: Within 30 days.

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