Technical Staff AI Engineer

About Warmly Warmly is a fast\-growing Series A company backed by Y\-Combinator, Felicis, and Sequoia, with a high\-velocity, transparent, and data\-driven work culture. Our AI sales platform saves hundreds of hours/week for sales teams while helping our customers achieve their mission faster. We are scaling from $3M to $10M in ARR and 250 to 500 customers in advance of a Series B. We foster a work environment where ideas are encouraged, experiments thrive, and individuals take ownership to drive impact. We are looking for a Staff AI Engineer to lead the architectural evolution of our Inbound, Outbound, and Signal Agents. You will be responsible for turning raw intent signals into high\-conversion pipeline through LLM\-driven reasoning, advanced identity resolution, and seamless workflow automation. What You’ll Build **Autonomous Inbound Agents:** Lead the development of AI agents that don't just "chat," but identify, qualify, and route leads using our proprietary Inbound Identity graph. **Signal Intelligence:** Architect the data pipelines that ingest millions of signals to determine "Strategic/Executive Value" for our customers. **LLM Ops \& Scalability:** Build the infrastructure to move from "prompt engineering" to "agentic reasoning," ensuring our AI is reliable, cost\-efficient, and fast enough for real\-time web traffic. **Data Room Ready Engineering:** Maintain rigorous documentation and clean architecture, ensuring our tech stack is a "plug\-and\-play" asset for our Series B due diligence. **Tech stack:** **Backend:** TypeScript, Node.js, GraphQL, tRPC **Infrastructure:** PostgreSQL, Redis, Elasticsearch, Google Cloud Platform, Kubernetes, Docker **Third\-party Integrations:** Salesforce, Hubspot, Pipedrive, Outreach, Apollo, Slack Experience with TypeScript Experience with Node.js Experience with React Experience with PostgreSQL, Redis Who You Are **The 10x Architect:** You have a track record of taking AI products from 0 to 1 and then scaling them to 100\. You understand that "Growth at all costs" is dead—you build for unit economic efficiency. **Technical Depth:** Expert in Python, TypeScript, and the modern AI stack (LangChain/LlamaIndex, Vector DBs, OpenAI/Anthropic APIs). **Product\-Minded:** You don't just build features; you solve problems for our core personas— Marketing, Sales, and RevOps . **Lean \& Mean Mindset:** You are excited about the challenge of a high\-performance, consolidated team and thrive in an environment where speed\-to\-market is the primary metric. Why Warmly? **Proven PMF:** Our top champions are already buying for Inbound Identity . You are joining a rocket ship that already has its trajectory set. **Series B Readiness:** We are sharpening our tools and our team to dominate the market. You will have a seat at the table as we scale the engineering org. **Equity \& Impact:** High\-leverage role with significant equity upside as we prepare for our next major milestone.