Applied AI Engineer

What You Will Do Build agent capabilities end to end: planning loops, tool use, prompts and instructions, memory, review workflows, evals, backend services, and customer-facing product surfaces. Design safe action systems across integrations like GitHub, Webflow, Google Search Console, Google Analytics, Notion, and Slack. Build observability and evaluation workflows so we can understand agent behavior, catch regressions, and measure whether Sunbeam is getting better at the job. Debug production agent runs from the model output all the way through database state, tool calls, customer context, and external API behavior. Work directly with customers and internal operators to turn expert growth judgment into product behavior. Ship quickly across the stack. On a given week, you might change agent instructions, add an MCP tool, create a skill to manage memory, tune a review gate, and fix a frontend workflow. What We Are Looking For You have been building AI products for 3+ years, with experience in production LLM agents, evals, tool-use systems, retrieval/memory systems, or workflow automation. You are comfortable working across the stack and across levels of abstraction: from "what should the agent do next?" to "why did this Postgres row end up in the wrong state?". You have high agency. You notice important problems, form a point of view, and drive them to completion without waiting for a detailed spec. You want to understand the customer problem deeply enough to encode judgment into software. You are excited by early-stage ambiguity, fast iteration, and a small team where everyone touches product, engineering, design, and customer problems. Nice to Have Experience at a marketing, sales, or growth AI company. Experience building from 0 to 1 and 1 to 10 at an early-stage startup. Familiarity with C#, .NET, TypeScript, React, GraphQL, Postgres, or MCP-style tool integrations. Location This role is based in San Francisco and requires in-person collaboration five days a week. We offer paid relocation for candidates outside the Bay Area. Compensation & Benefits $180,000–$220,000 base salary range plus equity. Medical, dental, and vision insurance. Lunch on in-office days. Wellness and learning stipends. Two retreats a year. Frequent team dinners and outings. #J-18808-Ljbffr