Software Engineer at YC S25 creator marketing AI startup

You will lead the agentic transformation of a platform crossing 7-figure ARR used by brands like Under Armour and Logitech. By architecting multi-step AI agents for creator discovery and campaign automation, you will turn manual workflows into autonomous systems, working directly alongside ex-Meta founders in a high-leverage founding engineering environment.

• Architect and deploy multi-step AI agents using Python and FastAPI to automate complex marketing workflows end-to-end.
• Implement sophisticated LLM orchestration frameworks to handle creator discovery, content strategy, and affiliate management.
• Iterate rapidly on production systems in a GCP environment, ensuring reliability for global enterprise brands and thousands of creators.

• Professional experience (3-8 years) building and shipping LLM-powered systems or AI agents in a production environment.
• Strong software engineering fundamentals in Python, with a track record of high-velocity shipping at Series A-D startups.
• Product-minded builder who thrives in high-ambiguity environments and wants to own entire features from concept to deployment.

• Join a YC S25 rocket ship that is already profitable with 7-figure ARR and official TikTok Shop partner status.
• Work on cutting-edge production AI: you aren't just calling APIs, you're building autonomous agents that handle real-world creator negotiations and payouts.
• High-ownership IC role with a direct path to shaping the technical architecture and product roadmap of a category-defining startup.