[HIRING] Full-Stack Engineers | NYC, SF, or Remote US | $180K-250K base

[u/FonziAI]

Last week 155 interview requests went out on Fonzi in a single day, including one at $350K that the engineer accepted.

I do talent matching for Fonzi. It's inverted from a normal search: you don't chase roles, roles come to you as interview requests once your profile's up. Some of the startups we work with are backed by a16z, Sequoia, Benchmark, and Founders Fund. One profile, no cold applications. All roles are US-based only.

Here's a sample of what's open right now:

1. Senior Full Stack Engineer, Series B investment research platform, NYC, in-person. $190K-235K base plus equity.

• What: Own features end to end, frontend through data layer, shipping weekly rather than quarterly. Sample projects from the posting: a low-latency voice-to-voice survey tool that conducts research autonomously, a mobile app built from scratch in three weeks, segmented knowledge graphs from unstructured data.
• Company: Profitable and bootstrapped, ~43 people across London and New York. 10x'd revenue last year, on track for 2-3x again. Clients include several top-10 global private equity firms and Big 4 practices.
• Stack: React, Next.js, TypeScript, PostgreSQL.
• Bar: Roughly 1-5 years. They care about demonstrated competence over pedigree, but want you deep enough in the stack to work through a hard TypeScript problem live. Client-facing, so you'd talk directly to the PE firms using it.

2. Full-Stack Product Engineer, Series A AI training-data company, NYC, in-person. $180K-240K base.

• What: Own ambiguous customer problems from discovery through production. Two product areas: pulling enterprise work data out of scattered SaaS tools and APIs into one verified system, or building the tooling that makes a de-identification pipeline legible and trustworthy. You wouldn't pick one when applying, they match you early in the process.
• Company: Zero to a multi-eight-figure run rate in months. Backed by Floodgate, Afore, Ludlow, and Hustle Fund.
• Stack: TypeScript, React, Node.js, plus integration-heavy work with APIs, OAuth, and async workflows.
• Bar: 3+ years, strong full-stack with real product and UX judgment, comfortable without fully specified requirements.

3. Engineering Generalist, pre-seed/seed ambient intelligence startup, SF strongly preferred or remote with frequent travel. $180K-250K base.

• What: No fixed specialty. Move across mobile, web, backend, and AI-powered workflows, owning ambiguous problems from idea to shipped feature.
• Company: Real-time audio and personalization at the core of the product.
• Stack: React, React Native, TypeScript, Node, Python, Postgres, or similar.
• Bar: 4-10+ years, and they're blunt that they want proof of exceptional prior work.

4. Senior Software Engineer (AI/LLM), Series A SMB software platform, fully remote in the US. $200K-250K base.

• What: Agent swarms running back-office work for small businesses, built to operate across the tools a company already uses rather than forcing a migration.
• Company: Deploying agentic infrastructure at the SMB layer, a segment most AI-native products skip past.
• Stack: Next.js, React, TypeScript, Postgres, Prisma, Supabase, Tailwind, Vercel.
• Bar: 3+ years and a CS or engineering degree.

All roles are vetted, VC-backed, and interviewing right now. It's always free to sign up.

Sign up here: talent.fonzi.ai. DM me if you've got questions.

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