Staff Data Scientist - End-to-End ML for Personalization

Ethos Life; San Francisco (CA); On-site; USD 127,000 - 224,000; Full time

Job summary

Ethos Life is hiring a Staff Data Scientist to own the product modeling roadmap and contribute to marketing measurement. You will design, build, and deploy production ML models, partnering with PMs to scope, prioritize, and communicate uncertainty in actionable terms.

You will own end-to-end model lifecycles for product experiences, coverage recommenders, and routing/assignment logic; collaborate with engineering to productionize models and surface real-time scores.

Qualifications

• 5+ years in data science or ML at established firms or high-growth tech.
• Strong command of supervised learning and recommendation systems; you've shipped production models, not just notebooks.
• Proficiency in Python (pymc, scikit-learn, XGBoost/LightGBM) and SQL.
• Hands-on Bayesian experience: prior elicitation, posterior inference, and experiment design.
• Experience deploying production models integrated with consumer-facing products.
• Strong communication skills; able to translate model behavior and uncertainty into stakeholder recommendations.
• Bias toward ownership; you identify what needs to be built before anyone files a ticket.
• Recommender systems or personalization at scale.
• Marketing mix modeling, media attribution, or incrementality measurement.
• Experience in insurtech, fintech, or other regulated industries.
• ML infrastructure tooling: MLflow, feature stores, dbt pipelines.

Responsibilities

• Own the end-to-end lifecycle of ML models powering product experiences, coverage recommenders, user-to-channel routing, and agent assignment logic
• Engineer features, prototype experiments, and ship iterative model improvements to production
• Work with engineering and PMs to define how model scores are consumed in real-time product surfaces

Skills

Data science

Python

SQL

Bayesian

Recommender systems

ML deployment

Model evaluation

Communication

Ownership

Tools

dbt

MLflow

Feature stores

Job description

Ethos Life is hiring a Staff Data Scientist to own the product modeling roadmap and contribute to marketing measurement. You will design, build, and deploy production ML models, partnering with PMs to scope, prioritize, and communicate uncertainty in actionable terms.

You will own end-to-end model lifecycles for product experiences, coverage recommenders, and routing/assignment logic; collaborate with engineering to productionize models and surface real-time scores.