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

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