Senior Software Engineer II, Member Growth, Top of Funnel

<div class="content-intro"><h2><strong>Our mission: e</strong><span class="heading--font-style-italic">liminating</span>&nbsp;every barrier to&nbsp;<span class="heading--accent-1-color">mental health.</span></h2> <p>Spring Health is a global mental health company on a mission to eliminate every barrier to mental health. We're building a world where getting support is simple, personal, and built around the person, so care can continue through every job, move, health plan, and life stage.<br><br>Our AI-native platform helps us deliver personalized support across self-guided tools, coaching, therapy, medication management, and specialty care. With outcomes independently validated by JAMA Network Open and the Validation Institute, Spring Health reaches more than 170 million people worldwide through leading employers, health plans, and partners.<br><br>As an AI-native company, we believe technology should expand the reach, quality, and humanity of care. Every Spring Health team member is expected to use AI tools thoughtfully, apply human judgment to AI outputs, and keep building AI fluency in ways that support their role and our mission.</p></div><p>The Top of Funnel team owns the critical first steps of a member’s journey: from registration and authentication to onboarding and provider matching. Your work will directly influence how millions of people access mental healthcare for the first time, and you will bring both growth-oriented experimentation and a commitment to architectural quality and reliability to everything you build.</p> <p>Please note that this is a <strong>hybrid role based in San Francisco</strong>, with an expectation to be in the office 2–3 days per week at our 2 Embarcadero Ctr. location. Candidates must be based in the San Francisco metro area or able to relocate independently within 90 days of their start date. Occasional travel will be required for team on-sites.</p> <p><strong>What you’ll do:</strong></p> <ul> <li>Design and build scalable, performant front-end features and systems using React, Next.js, and TypeScript, with a strong emphasis on engineering rigor and maintainability</li> <li>Drive top-of-funnel member growth initiatives, including A/B experimentation, feature flagging, and conversion optimization, in close partnership with product and growth teams</li> <li>Own and improve critical member-facing flows-registration, authentication, onboarding, and provider matching-delivering best-in-class user experiences at scale</li> <li>Harden existing front-end architecture by identifying and resolving technical debt, improving reliability, reducing latency, and elevating overall code quality</li> <li>Collaborate with cross-functional teams-product, design, data, and bac