The Role
The Applied Scientist will develop and enhance machine learning models, design A/B tests, evaluate performance, and collaborate with stakeholders to enhance decision-making and operational workflows in healthcare.
Summary Generated by Built In
Everlywell is a digital health company pioneering the next generation of biomarker intelligence—combining AI-powered technology with human insight to deliver personalized, actionable health answers. We transform complex biomarker data into life-changing insights—seamlessly integrating advanced diagnostics, virtual care, and patient engagement to reshape how and where health happens.
Over the past decade, Everlywell has delivered close to 1 billion personalized health insights, transforming care for 60 million people and powering hundreds of enterprise partners. In 2025, an estimated 1 in 94 U.S. adults received an Everlywell test, solidifying our spot as the #1 at-home testing company in the country. Fueled by AI and built for scale, we’re breaking down barriers, closing care gaps, and unlocking a more connected healthcare experience that is smarter, faster, and more personalized.
Over the past decade, Everlywell has delivered close to 1 billion personalized health insights, transforming care for 60 million people and powering hundreds of enterprise partners. In 2025, an estimated 1 in 94 U.S. adults received an Everlywell test, solidifying our spot as the #1 at-home testing company in the country. Fueled by AI and built for scale, we’re breaking down barriers, closing care gaps, and unlocking a more connected healthcare experience that is smarter, faster, and more personalized.
Everlywell operates large-scale health engagement programs that help health plan members complete important care actions — from returning diagnostic kits to accessing preventive and virtual care.
We’re hiring an Applied Scientist to build and measure the ML systems that power these programs. This role is focused on machine learning, experimentation, and production measurement. You’ll train models, evaluate performance, design A/B tests, and work with engineering and business stakeholders to improve real-world outcomes.
This is a high-impact opportunity to apply ML and experimentation skills to systems that influence real member outcomes at scale. You’ll work on practical, production-facing problems with clear business value, strong cross-functional visibility, and room to help shape how Everlywell uses both ML and AI in operational workflows.If you’re excited by hands-on modeling, rigorous experimentation, and building systems that improve decisions in the real world, we’d love to hear from you.
Responsibilities
- Build and improve ML models used in engagement and operational workflows
- Develop models for prediction, prioritization, uplift, and related decisioning use cases
- Define and monitor model performance, business impact, and system health
- Design and analyze A/B tests and other measurement approaches to evaluate incremental impact
- Partner with stakeholders to define success metrics and turn findings into decisions
- Support production rollout and ongoing monitoring with engineering teams
- Help evaluate AI- and LLM-powered workflows used in production settings
Skills & Abilities Required:
- 5+ years in Applied Science, Data Science, ML, Decision Science, or similar roles
- Strong hands-on experience training, evaluating, and improving ML models
- Strong experience designing and analyzing A/B tests
- Strong Python and SQL skills
- Experience measuring model, program, or product performance in production
- Ability to work cross-functionally and communicate clearly with stakeholders
- PreferredExperience in experimentation platforms, growth or lifecycle modeling, or ML-driven decision systems
- Experience with causal inference or uplift modeling
- Experience with LLMs, AI agents, or automated workflows in production
- Experience in healthcare or regulated environments
- Snowflake, Python, dbt, Airflow, model registry systems, GitLab
Security Notice: Everlywell never requests fees, payment, or banking information at any stage of the recruitment process. Official communications and interview invitations will only come from verified email addresses ending in @everlywell.com or @everlyhealth.com. To ensure your application is secure, always apply directly through our official careers page at https://www.everlywell.com/careers/.
Skills Required
- 5+ years in Applied Science, Data Science, ML, Decision Science
- Strong hands-on experience training, evaluating, and improving ML models
- Strong experience designing and analyzing A/B tests
- Strong Python and SQL skills
- Experience measuring model, program, or product performance in production
- Ability to work cross-functionally and communicate clearly with stakeholders
- Experience in experimentation platforms, growth or lifecycle modeling, or ML-driven decision systems
- Experience with causal inference or uplift modeling
- Experience with LLMs, AI agents, or automated workflows in production
- Experience in healthcare or regulated environments
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The Company
What We Do
Everlywell believes that health tests shouldn’t be hard to get – or hard to understand. The Everlywell experience is simple. You order one of our kits online, you collect your sample from home and return it via pre-paid mail to one of our fully-certified partner laboratories. A board-certified physician in your state will review and validate your results before you get them. Everlywell provides a complete, easy-to-read results report online in just a few days.
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