Fonzi AI

Providing client support and troubleshooting healthcare systems, managing support tickets, and developing SQL and code updates. | Experience in support engineering, SQL, JavaScript, C#, and healthcare systems, with a focus on troubleshooting and client success. | Senior AI Product Engineer About Fonzi AI We're a Series A startup backed by Lightspeed revolutionizing hiring through AI. Founded by repeat entrepreneurs (Kumospace), we launched our AI-powered recruiting marketplace in June 2025 and are already revenue-positive with just under 100 employer partners—75%+ are AI-native companies. Thousands of engineers are on our platform, and we're running Match Days every two weeks where pre-screened candidates receive competing offers from top employers. Our vision: build the infrastructure where AI learns what engineers actually do, what they want, and matches them to opportunities automatically. We're not just using AI at the edges—we're building toward a future where intelligent systems handle the entire recruiting workflow, and we need engineers who want to build that future with us. The Role The Senior AI Product Engineer is a new kind of role for a new era of software development. The line between "full-stack engineer" and "AI engineer" is blurring fast—and at Fonzi, we've stopped pretending it exists. You'll own features end-to-end: from database schemas to React components to the AI agents that make our platform intelligent. Some weeks you're building robust backend systems. Other weeks you're experimenting with the latest models to create features that feel like magic. Most weeks, it's both. We're looking for engineers who've had the "aha moment"—who understand that AI changes everything about how software gets built—and who want to work at a company where that belief is baked into every product decision. What You'll Build AI agents that conduct intelligent conversations with candidates—voice interfaces that onboard engineers, coaching systems that prep them for interviews, matching algorithms that learn from every interaction The platform that powers a two-sided marketplace—TypeScript/Node.js backends, React/Next.js frontends, PostgreSQL data layer, all built for speed and iteration AI-powered features from concept to production—rapidly prototype with the latest models, make smart trade-offs between cost/quality/speed, then scale the winners to thousands of users The intelligence layer that makes our marketplace smarter with every candidate conversation, every match, every hire—the data flywheel that will define our competitive advantage Required Experience TypeScript across the stack: Strong proficiency in TypeScript, Node.js, React, and Next.js—you'll move fluidly between backend and frontend Production AI experience: You've shipped LLM-powered features to real users—whether that's agentic systems, conversational AI, intelligent automation, or integrating models into applications. We care that you've done it, not how deep you went. Product engineering mindset: You care about user experience, not just technical implementation. You'll help define the "what" not just build the "how." Database fluency: PostgreSQL experience—efficient queries, sensible schemas, understanding of how data flows through a system Startup velocity: 5+ years of experience with meaningful time in fast-paced environments where you owned problems end-to-end Ship-first mentality: You default to shipping and iterating. You're deliberate about trade-offs but allergic to over-engineering. AI coding tool mastery: You're fluent with tools like Claude Code, Cursor, Copilot, or similar. You don't just use them—you've developed workflows that make you dramatically faster. You understand when to lean on AI assistance and when to think for yourself. The AI Spectrum (We're Flexible) We recognize that "AI Engineer" means different things to different people. You might be: A full-stack engineer who's been going deep on AI for the past year and wants to do more An AI-focused engineer who can also build solid product features Someone who's been building agentic systems and wants to apply that to a real business problem A product engineer who uses AI tools daily and wants to build AI features, not just use them All of these profiles can succeed here. What matters is that you can build across the stack AND have genuine experience shipping AI to production. The ratio is less important than the capability. Nice to Have Voice AI or conversational interface experience Experience with agentic systems, AI orchestration, or Temporal.io Background in marketplace, recruiting, or HR technology Serverless architecture and GCP experience Python for AI/ML tooling You've created custom Skills, rules, or workflows for Claude Code, Cursor, or similar tools—you don't just use AI coding assistants, you extend them What Makes You Successful Here Extreme ownership: You take projects and run. Our tech lead wants to hand off entire features, not provide ongoing support. Adaptability: Comfortable with rapid pivots, killing work mid-stream, and FIFO priority shifts. We move fast and directions change. Direct communication: You flag issues early, propose changes proactively, and translate technical concepts for non-technical teammates. Business instincts: You understand how your code impacts revenue and user experience. You make trade-offs accordingly. What Makes This Special AI playground: We're testing every model available. Constant experimentation. Freedom to build and break things. Real users, real feedback: Thousands of engineers on the platform. Your code ships and you see impact immediately. Ground floor timing: Early enough to shape architecture and culture. Established enough to have traction and resources. No red tape: Flat structure, minimal documentation overhead, streamlined decisions. We optimize for speed. Repeat founders: Leadership that's done this before. Sustainable pace. No theater. Location Brooklyn, NY (Williamsburg) — 3-4 days/week in office Compensation $175,000 - $225,000 base + meaningful equity

Drive new client acquisition and manage the full sales cycle and account lifecycle while representing the company at industry events and building scalable sales processes. | Requires strong existing network in San Francisco tech recruiting, deep recruiting process knowledge, client lifecycle management experience, self-direction, and event representation skills. | Full-Cycle Sales Full-time, Remote, San Francisco About Fonzi AI We're a fast-growing startup revolutionizing tech hiring through our Match Day platform. We're building the first agentic hiring marketplace where top engineers join and receive interview requests directly from leading AI companies - complete with confirmed salary numbers upfront. Recently launched, we've already attracted thousands of engineers to our platform and are connecting them with the most innovative companies in tech. The Role We're seeking a relationship-driven sales professional to represent our recruiting platform in the San Francisco market. This is a full-cycle sales/business development role with account management responsibilities that combines industry expertise with hands-on execution. This role requires someone who can leverage existing networks, build scalable sales processes, and manage the complete client lifecycle from prospecting through renewals. What You'll Do • Drive new client acquisition through your network in the San Francisco tech recruiting ecosystem, building relationships with VCs, talent partners, and portfolio companies • Own the complete client lifecycle from prospecting through renewals - manage the full sales cycle, then handle ongoing account management, Match Day collaboration, and strategic relationship expansion • Represent Fonzi at 2+ SF events monthly - independently show up, set up, facilitate, and work the room at our hosted industry events • Build scalable sales processes from scratch while working closely and cross-functionally with Marketing, Recruiting, and Engineering teams to improve our product as we figure out what works in this early-stage environment Who You Are • We're looking for someone with one of these profiles: • Full-desk recruiter with extensive client relationships looking to transition to BD • Business development or sales professional from a recruiting agency or recruiting technology company • Talent partner from a VC firm with portfolio company connections • Former recruiting company owner/operator with proven sales and relationship management experience Required Experience • Strong existing network in the San Francisco tech recruiting ecosystem • Deep understanding of recruiting processes, pain points, and account management best practices • Proven ability to build and maintain client relationships through the full lifecycle from prospecting to renewals • Comfortable working in an early-stage, ambiguous environment with minimal structure • Self-directed with ability to develop sales processes from scratch • Experience representing a company at industry events What Makes You Successful • You're a connector, not a cold-caller - Our most successful client acquisitions come from real relationships, not traditional sales tactics • You thrive without a playbook - We're still figuring out what works, so you need to be comfortable experimenting and iterating • You understand recruiting deeply - You can have credible conversations about recruiting challenges because you've lived them • You think beyond your rolodex - While your network gets you started, you're excited about building scalable systems for the future What Makes This Special • Ground floor opportunity - You'll be instrumental in defining how we approach sales, account management, and business development • Relationship-first culture - We prioritize authentic connections and long-term partnerships over transactional relationships • Solving real problems - Our Match Day platform addresses genuine pain points you've experienced in recruiting • Collaborative environment - You'll work closely with founders who are deeply involved and accessible • Focus on the right metrics - Take a data driven approach to ensuring you achieve your sales goals • Tech-enabled future - Be part of evolving from traditional recruiting toward an innovative, AI-powered model • Complete ownership - Own the entire client experience and help define what success looks like Location San Francisco - Remote + In-Person Events • Onboarding Week in NYC