Senior Founding Full Stack Engineer

About the Role We are building a consumer membership platform and data infrastructure for an early stage company in the AI x ecommerce space. You will own the entire engineering function from product and frontend to backend and data, shaping the technical direction and delivering the MVP and beyond. What You'll Do Own the membership MVP launch on a partner platform and drive subsequent product and infrastructure iterations. Improve page performance, third party integrations, and the overall user experience across web and mobile surfaces. Ensure privacy compliance tooling and data handling stay aligned with regulations and best practices. Make architectural decisions around stack, security, databases, and vendor relationships. Lead the development of a consumer mobile app, prioritizing iOS, from the ground up. Build AI powered agents and internal tools with monitoring, evaluation, and human in the loop safeguards. Create automation, internal tooling, and workflows to reduce manual work across functions. Collaborate with leadership to address high priority problems and balance product and infrastructure trade offs. What We're Looking For Strong CS fundamentals with a track record shipping consumer software in production. Proficiency in TypeScript, React, and either Python or Node.js. Hands on experience with ecommerce platforms and native mobile app development, ideally iOS first. Experience shipping web apps with performance optimization and working knowledge of privacy compliance tooling. Ability to make architectural and security decisions with minimal guidance. Experience building and deploying AI powered tools or agents a plus. Compensation & Benefits Salary range provided: 130000-200000 USD annually. Visa sponsorship policy available upon discussion. Location On-site in San Francisco, United States