Sr. Front-End Engineer (AI First)

Job Description

Job Description

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 2024 alone, an estimated 1 in 86 U.S. households received an Everlywell test, solidifying our spot as the #1 at-home testing brand in the country. And we’re just getting started. 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.

We’re seeking a Senior Frontend Engineer with deep expertise in React and Next.js , who is ready to embrace an AI-first engineering culture — where artificial intelligence is not a novelty, but a 10x force multiplier that enhances your ability to ship exceptional products faster, smarter, and with greater confidence.

You’ll collaborate with product, design, and analytics to experiment, measure, and scale high-impact changes across user experiences and checkout flows. This is an ideal role for frontend engineers who are not only passionate about building modern, scalable UI — but also energized by experimentation, data, and impact at the intersection of health and technology.

What You'll Do :

• Develop performant, modular applications using React, Next.js, and TypeScript, backed by a robust and evolving Design Language System (DLS).
• Use AI-first tools (e.g., Cursor, Copilot, AI-assisted code search, and automated refactoring) to radically accelerate day-to-day development and maximize creativity.
• Partner with Product and Design teams to implement experiments including A / B tests, multivariate experiments, and personalization strategies.
• Continuously optimize site speed, user journeys, and overall web performance to improve conversion and customer satisfaction.
• Help define and promote AI-enhanced coding practices, integrating intelligent tooling into our dev workflows, CI / CD, and code review culture.
• Ensure high-quality output through automated and AI-assisted testing, error monitoring, and performance tracking.
• Collaborate across product, design, and backend teams to deliver full-stack features that delight our users and support healthcare innovation.

Who You Are :

Nice to Have :

Why You'll Thrive at Everlywell :