Senior Front-End Growth Engineer

Summary

Join Everlywell as a Senior Growth Engineer and leverage your React and Next.js expertise in an AI-first environment. You will drive measurable business impact through e-commerce performance optimization, A/B testing, and conversion rate improvements on everlywell.com. Collaborate with product, design, and analytics teams to experiment, measure, and scale impactful changes to user experience and checkout flows. This role requires a passion for building modern, scalable UI and a data-driven approach to problem-solving. You will utilize AI-powered tools to accelerate development and contribute to our internal growth experimentation framework. The ideal candidate will have a strong understanding of software engineering best practices and experience with growth-focused web experiments.

Requirements

• 4–6+ years of professional experience in frontend web development
• Advanced proficiency with React, Next.js, and TypeScript
• Experience implementing growth-focused web experiments, and driving impact through data-informed design and optimization
• Passionate about AI’s role in modern engineering — not just as an efficiency tool, but as a creative and cognitive multiplier
• Hands-on experience with AI-powered dev tools like Cursor, GitHub Copilot, Codeium, or equivalents
• Strong understanding of software engineering best practices — including component design, state management, and automated testing
• Familiarity with backend integration (REST, GraphQL) and performance optimization for modern web apps

Responsibilities

• 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, Design, and Growth teams to implement CRO-focused experiments, including A/B tests, multivariate experiments, and personalization strategies
• Continuously optimize site speed, checkout performance, and user journeys to improve conversion and customer satisfaction
• Contribute to our internal growth experimentation framework, including analytics instrumentation, experimentation infrastructure, and performance monitoring
• 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

Preferred Qualifications

Experience with e-commerce platforms, CRO tools (e.g., Google Optimize, Optimizely, or internal A/B platforms), Ruby on Rails, or DevOps tools like Docker, Jenkins, and AWS CodeBuild

Benefits

• AI-first culture focused on velocity and developer empowerment
• Real opportunity to multiply your output and influence with the latest tools and practices
• Mission-driven company with top-tier backing
• Flexible remote work and open PTO policy
• Health, vision, dental + 401(k) with company match
• Paid parental leave and family-first benefits