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.