Founding Engineer, Growth Platform & Multi-Agent Systems

Ploy; San Francisco (CA); On-site; USD 140,000 - 210,000; Full time

Job summary

Ploy is building an agentic marketing platform in San Francisco. We deploy swarms of marketing and web design agents that monitor websites and proactively launch campaigns, content, and optimizations, providing growth engine capabilities for companies.

We seek engineers excited to own end-to-end systems, from frontend to ML/agent infra, with production experience in LLMs. This is a hands-on, in-person role with a small, senior team that moves quickly.

Qualifications

• Built something from 0 to 1 and thrives in ambiguity.
• Comfortable diving deep in stack areas: frontend, backend, infra, or ML/agent systems.
• Experience with LLMs in production, or eager to learn.
• Decisive with incomplete information and honest about issues.
• Wants to work in person in San Francisco with a small, fast-moving team.

Responsibilities

• Build multi-agent systems that plan, execute, and learn from websites and growth channels in production.
• Develop infrastructure to let agents make changes to live sites safely at scale (previews, diffs, rollbacks, performance guardrails).
• Create primitives and interfaces customers use to direct agents themselves.
• Implement feedback loops to make the product smarter the longer it runs.

Skills

End-to-end product development

Ambiguity navigation

ML/Agent systems

Production ML experience

Job description

Ploy is building an agentic marketing platform in San Francisco. We deploy swarms of marketing and web design agents that monitor websites and proactively launch campaigns, content, and optimizations, providing growth engine capabilities for companies.

We seek engineers excited to own end-to-end systems, from frontend to ML/agent infra, with production experience in LLMs. This is a hands-on, in-person role with a small, senior team that moves quickly.