AI-Native Founding Engineer at Fancysauce Inc. - Fast-growing AI cost management startup

Join Fancysauce as our second engineer and partner with a proven founding team of Harvard grads and Apple alumni. You will own core platform verticals end-to-end, building agentic recipes that help companies optimize AI stacks. This high-autonomy role requires shipping fast in an AI-native environment to prevent company-compounding AI bills.

• Architect and deploy end-to-end product verticals, shipping high-quality code multiple times daily across the frontend, backend, and infrastructure.
• Design and scale agentic engineering harnesses and observability tools that dynamically route model usage and optimize enterprise AI resources.
• Act as a "manager of one" to define, plan, and execute technical roadmaps while collaborating directly with the CTO in a high-speed SF kitchen.

• 3-5+ years of experience in full-stack engineering roles, with deep fluency in TypeScript, React, SQL, and a strong comfort level with Python.
• An AI-native builder who actively leverages agentic engineering principles and AI coding tools to multiply their own productivity and output quality.
• Proactive problem-solver with a high tolerance for ambiguity, capable of digging into GCP logs one moment and architectural design the next.

• Exceptional founding team with a history of success; the CEO previously scaled revenue to $100M+ with four successful exits, including Retain.ai ($30M raised).
• Backed by tier-A investors including Afore Capital and strategic angels from industry leaders like OpenAI, Gemini, and Baseten.
• Rare opportunity to join at the pre-seed stage as the second engineer, gaining massive equity and the ability to define agentic engineering principles from scratch.