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.
8+ years of experience
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.
Warmly is an AI sales platform that automates lead identification, qualification, and routing for sales teams through proprietary identity resolution and LLM-driven reasoning. The company develops autonomous inbound and outbound agents that transform raw intent signals into high-conversion pipeline for sales, marketing, and revenue operations teams. Warmly is a Series A company backed by Y Combinator, Felicis, and Sequoia, currently scaling from $3M to $10M in ARR with 250 to 500 customers. The platform integrates with major CRM and sales tools like Salesforce, HubSpot, Pipedrive, and Outreach to save sales teams hundreds of hours per week.
