Founding Software Engineer

Fonzi Match Day is where exceptional engineers connect with AI startups and high-growth tech companies building the future in AI. Let 30+ pre-vetted NYC and San Francisco companies compete for your talent. The companies on Fonzi are building agentic systems, deploying LLMs in production, and solving real technical challenges.

Fonzi is your filter for what's actually interesting in AI right now, not another job board. Companies request to interview you!

How Match Day works:
2-minute application process
We reach out to get to know you and optimize your profile
Hiring managers review a curated group of engineers and request interviews with candidates
Companies submit competing offers directly to you
Interview only with opportunities that genuinely excite you
Completely free + incentives for engineers and a Concierge to handle scheduling and coordination

Must Haves:
4+ years building products from 0-1
Full-stack technical (React, TypeScript, Python, Node.js, AWS/GCP) or AI/ML expertise
Startup experience or strong product ownership at scale
Track record shipping user-facing features that drive business impact
Thrives in ambiguous, high-velocity environments

Ideal Profiles:
Senior/Staff Engineers from high-growth startups seeking founding roles
FAANG engineers ready to build from the ground up
Technical leaders who want equity upside and product ownership
Engineers who've worn multiple hats and love solving diverse technical challenges

What You'll Build:
Core product architecture and technical foundations
User-facing applications serving millions
AI-powered features and integrations
Scalable systems from MVP to enterprise-grade

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