Product Engineer (Full Stack / Backend-Leaning)

Company: Jenn Nguyen and Friends
Location: San Francisco
Posted on: February 21, 2026

Job Description:

Job Description Job Description Product Engineer (Full Stack / Backend-Leaning) Compensation: $130K–$210K base (varies by level and interview performance) equity Location: San Francisco, CA Work Policy: 5 days/week in-office Sponsorship: TN and OPT visa transfers supported Stage: Seed-stage startup | $3.1M raised | YC-backed | 10 enterprise customers Who Are We? Were a YC-backed, San Francisco–based startup building autonomous AI agents for fraud, compliance, trust & safety, and threat intelligence. Our platform provides a unified API and end-to-end system that helps companies integrate best-in-class safety tools quickly and reliably. Founded by engineers from leading Trust & Safety teams, were already working with enterprise customers and Fortune 500 companies. Were growing fast and scaling both product and team to meet demand. What's in It for You? Work directly with founders on frontier AI systems solving real-world risk and safety problems. Ship features with iteration cycles measured in hours—not quarters. Own product features end-to-end, from backend logic to polished UI to production deployment. Help build infrastructure that processes billions of events per day. Competitive base salary plus meaningful equity in a fast-growing YC-backed company. Platinum-tier medical, dental, and vision insurance. Unlimited PTO. Lunch and wellness stipend. What Will You Do? Design and ship full product features across frontend and backend layers. Build and scale AI-driven interfaces used in high-stakes environments. Work directly in React/Next.js, TypeScript, MySQL, and ClickHouse. Collaborate closely with founders to solve real-time decisioning challenges balancing precision, speed, and user trust. Run fast pilots, demos, and production rollouts across industries. Contribute to architectural decisions that enable scaling to billions of events. What Will You Need? 3 years of software engineering experience (mid to senior level). Experience in startup environments or strong signal backgrounds (top-tier schools, impressive GitHub, or top-tier tech companies). Hands-on experience with React/Next.js, TypeScript, MySQL, and familiarity with ClickHouse. Strong fundamentals in full stack development with the ability to own features end-to-end. Passion for craftsmanship and strong opinions about code quality and product design. Comfort working in a high-urgency, fast-paced, in-person environment. Strongly Preferred Growth-stage startup experience. Experience at top-tier technology companies. Experience with event sourcing, stream processing, or languages like Elixir, Rust, or Scala. Must Not Have Job hopping history. Employment gaps without strong explanation. Consulting-only background. Long-time manager/CTO transitioning back to IC without recent hands-on depth. Primarily DevOps or infrastructure-focused profile. Experience limited to internal dashboards, refactoring, or low-complexity projects.

Keywords: Jenn Nguyen and Friends, Sunnyvale , Product Engineer (Full Stack / Backend-Leaning), IT / Software / Systems , San Francisco, California