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Senior Full-Stack​/Product Engineer

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Alexander Chapman
Full Time position
Listed on 2026-02-06
Job specializations:
  • Manufacturing / Production
    Systems Engineer
Job Description & How to Apply Below

I’m working with a YC-backed AI/SaaS company creating an entirely new category in sales technology. Their platform acts as a Sales Performance OS, observing and scaling top-performer behavior to give enterprise sales teams a massive edge. They’ve just raised a $15M Series A, are valued at $90M and are growing ~20% month over month, and are entering a major scale-up phase.

The Role

They’re looking for a Full-Stack Engineer to help build and scale a high-performance, AI-powered platform used by enterprise sales teams. You’ll work directly with the founders and early engineering team, owning core product surfaces and backend systems while shipping production features from day one.

What You’ll Do
  • Build and deploy full-stack features using React/Next.js, Type Script, and Node/NestJS
  • Implement responsive, high-quality UI with Tailwind CSS
  • Integrate Python (FastAPI) services powering ML workflows
  • Ensure scalability, performance, and clean architecture across the stack
  • Collaborate closely with engineers and founders to plan and ship fast
About You
  • Are comfortable with React/Next.js and backend APIs
  • Have some exposure to Python and cloud infrastructure (AWS)
  • Thrive in fast-paced, early-stage environments and enjoys wearing multiple hats
  • Excited to work in-person, 5 days a week in San Francisco
Why Join
  • Early Ownership:
    Influence architecture, product direction, and scale
  • Category-Defining Work:
    Help build the future of sales performance tech
  • Rocketship Growth: $1M+ new ARR closed in back-to-back months
  • Elite Team:
    Ex-YC founders and top-tier engineers
  • Accelerated Career:
    Learn more in a year than most do in five
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Position Requirements
10+ Years work experience
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