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YC Work at a Startup Logo YC Work at a Startup · IT - Software Development

Full-Stack Developer

United States, New York 125000.00 - 250000.00 USD / Year · Job Posted January 07, 2026
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Job Description

We’re building autonomous AI agents that resolve customer support tickets for e-commerce businesses end-to-end. They cancel orders, issue refunds, check inventory, talk to suppliers, and get better over time. To make this scalable, we’re building an AI Manager: a higher-level agent that trains, monitors, and optimizes the Support Agents with minimal human input - effectively an AI-run support team.

Job Responsibility

  • Ship production features across the stack
  • Work in tight loops: build → test → measure → refine
  • Use AI tools daily (Cursor, Claude, etc.) and push them further
  • automate glue work, generate scaffolds, build evals, multiply your own output
  • Take ownership of outcomes, not tickets

Requirements

  • You can own features end-to-end and enjoy doing so
  • You ship fast and care about quality, clean architecture, solid tests, good UI
  • You’re resourceful and persistent, you figure things out
  • You’ve built things you’re proud of (products, open source, side projects)
  • You use AI tools daily and want to keep raising that bar
  • You think in systems and multipliers, not just tasks
  • Backend: Python, FastAPI, AWS
  • Frontend: TypeScript, React, Next.js
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