Founding Engineer
San Francisco, CA$150k - $250kFull-timePosted 3mo ago
About the role
Founding Engineer at Ploy, a YC-backed growth platform that uses multi-agent systems to turn websites into growth engines. Role involves full-stack engineering across frontend, backend, infra, and ML/agent systems with in-person work in San Francisco.
Responsibilities
- The surface area is wide. You'll touch some mix of: - Multi-agent systems that plan, execute, and learn from websites and growth channels in production — orchestration, memory, evals, and everything it takes to keep them reliable. - The infrastructure that lets those agents make changes to live sites safely at scale — previews, diffs, rollbacks, performance guardrails. - The primitives and interfaces customers use to direct the agents themselves. - The feedback loops that make the product get smarter about a customer's business the longer it runs.
Qualifications
- You've built something from 0 to 1 and thrive in ambiguity. - You're comfortable going deep on any part of the stack — frontend, backend, infra, or ML/agent systems — and have strong taste in at least one. - You've worked with LLMs in production, or you're hungry to. - You make good decisions fast with incomplete information, and you're honest when something isn't working. - You want to work in person in San Francisco, most days, with a small team that moves quickly.
Skills
Required:Full-stack development
Last updated Oct 25, 2026. Interested? Apply on the company site.
