H

hims & hers

Connects patients to online medical care

Staff Data Scientist

Applied Machine LearningConfirmed live in the last 24 hours
Full-timeLondon, UK£95k - £115k /yrHybrid

About the Job

Requirements

  • At least 8 years of experience in Data Science or Machine Learning Engineering, with a track record of building production systems that deliver measurable business impact.
  • High proficiency in Python and SQL.
  • Expert-level experience with pandas, NumPy, and scikit-learn, and experience with at least one major machine learning framework such as PyTorch, XGBoost, or LightGBM.
  • Ability to address unique issues requiring conceptual thinking and broad impact, build for long-term scalability, and deliver immediate value.
  • Ability to influence without authority and translate complex technical logic into compelling narratives for executive leadership.
  • Experience with continuous integration and continuous delivery, Machine Learning Operations, and the full lifecycle of models in a cloud-based production environment using AWS or GCP.
  • A BS, MS, or PhD in a quantitative field such as Data Science, Statistics, Economics, Computer Science, or Applied Mathematics, or equivalent field expertise.

Responsibilities

  • Lead the design and implementation of automated machine learning systems, make pragmatic architectural choices, write production code, and establish core machine learning infrastructure.
  • Translate ambiguous business questions, including customer acquisition and churn dynamics, into concrete technical roadmaps that deliver actionable results.
  • Lead end-to-end deployment of machine learning products, ensuring they are accurate, robust, maintainable, and integrated into production infrastructure.
  • Partner with Engineering, Product, and Business to ensure technical strategy addresses business problems and advances core metrics.
  • Establish model-development standards, lead design documents and peer reviews, and ensure work is reproducible and integrates with Data and Analytics Engineering partners.
  • Own the full model lifecycle, from initial data design through long-term performance and business value of production systems.
  • Mentor Senior and Mid-level Data Scientists and elevate technical standards and continuous learning across the data organization.

Desired Qualifications

  • Experience taking an organization's first machine learning models from exploratory notebooks to reliable, automated production pipelines.
  • Experience in one or two of the following: building predictive models for churn, propensity-to-buy, lead scoring, or lifetime value to drive marketing and product interventions; time-series forecasting, anomaly detection, or handling non-stationary data for demand or revenue planning; building optimization engines for marketing spend, inventory management, or resource allocation; or designing causal-inference experiments such as quasi-experiments and difference-in-differences to measure business impact beyond standard A/B testing.

About the Company

hims & hers

Connects patients to online medical care

Hims & Hers operates a consumer health platform that connects people with licensed providers for online consultations and ongoing care. Its Hims and Hers brands give customers access to services for hair loss, sexual health, mental health, skin care, and weight management, alongside prescription and nonprescription products. Providers assess patients and make treatment decisions, while the group coordinates digital records, follow-up, and fulfillment through owned and partner pharmacies. Revenue comes from product sales and subscriptions that combine recurring shipments with access to care. Hims & Hers was founded in 2017 and is headquartered in San Francisco, California.

Company size
1,001-5,000
Company stage
Post IPO Equity
Headquarters
San Francisco, California
Founded
2017

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