Founding Full Stack Engineer

About the Role This is a founding engineering role at a consumer health and wellness startup, where you will own the entire engineering function across a membership platform, consumer app, and internal tooling. You will be the first dedicated engineer, working closely with leadership to ship fast and make high-impact architectural decisions from day one. What You'll Do Build and launch a consumer membership web application on Shopify and Recharge, then own ongoing maintenance and improvements. Monitor and optimize page speed, app performance, and third-party script behavior across the storefront. Keep tracking and consent tooling properly configured and compliant with privacy regulations such as CPRA. Own engineering architecture, stack choices, security, vendor selection, and database decisions for the membership platform. Lead development of a consumer-facing React Native app from the ground up, prioritizing iOS. Build LLM-powered agents and internal tools that run unattended in production, with evals, monitoring, and human-in-the-loop safeguards where needed. Leverage AI, automation, and low-code tools to reduce manual operational work across all functions. Work directly with the CEO to tackle high-priority, fast-moving product and infrastructure problems. What We're Looking For 3 or more years as a full-stack engineer shipping consumer products to production, with 5 to 10 or more years of overall experience preferred. Strong proficiency in TypeScript and React, with shipped production applications to show for it. Proficiency in Python or Node.js and a track record of shipping reliable code quickly. Hands-on experience with Shopify and Recharge integrations. Proven experience building and shipping consumer-facing React Native apps, iOS-first. Demonstrated expertise in web performance optimization, including page speed, bundle size, and third-party script management. Experience making architectural decisions around databases, security, and engineering stack choices. Experience implementing privacy compliance tooling, including consent management and CPRA or GDPR-related data handling. Familiarity with LLM-powered agents, AI automation tools, and evaluation frameworks. Degree in engineering, computer science, mathematics, or equivalent demonstrated experience shipping software products. Compensation & Benefits Salary range: $130,000 to $160,000 USD annually. Location On-site in San Francisco, United States.