Senior Product Engineer

Senior Product Engineer Company: Confidential — venture-backed technology company Location: New York, NY (Chelsea office, in person 2-4 days per week) Compensation: $170,000 - $225,000 + competitive equity Employment Type: Full-time Visa Sponsorship: Not available (US citizens and green card holders) About the Company The client is on a mission to make life happier and healthier for autistic and neurodivergent adults, a group that has been systematically overlooked despite a 5x rise in autism diagnoses over 25 years. Prosper delivers specialized mental health services for autistic adults, covered by insurance, and has helped tens of thousands of people. Prosper has raised a $16.2M Series A and has a Series B underway as it expands into ADHD diagnosis, medication management and clinician supervision tooling. The Role Prosper is hiring a Senior Product Engineer (5+ years): a product-minded, full-stack builder excited to own real work in building the first comprehensive platform for autistic and neurodivergent adults. This is a foundational hire as Prosper scales into new verticals, with about 70% greenfield work. What You Will Do Build new product across the stack, from client intake and clinician tooling to medication management and ADHD features. Design and ship backend APIs and frontend experiences in a TypeScript monorepo (Node/Fastify, React, Supabase, tRPC, Prisma). Work directly with operations, clinical teams and incoming PMs to validate and ship solutions to real user problems. Own projects end to end with real influence on product direction. Contribute to developer experience: CI/CD, observability and code quality. What You Bring 5+ years of full-stack product engineering Strong TypeScript with Node.js and React Product mindset and end-to-end ownership Ability to work in the Chelsea, NYC office 2-4 days a week US work authorization without sponsorship Nice to Have Healthcare or mental health product experience Tech Stack TypeScript, Node.js, Fastify, React, Supabase, PostgreSQL, tRPC, Prisma, CI/CD Before you apply: get a free recruiter-readiness score for your resume at CareerStanding — about a minute, no signup, and your resume stays in your browser.