Founding Engineer

ABOUT THE ROLE Join an early-stage AI sales automation team building multimodal agents that communicate across voice, SMS, and email. You will own a core product or infrastructure domain end to end, work directly with customers, and help shape product decisions as the team grows. WHAT YOU'LL DO - Own a domain from architecture through daily production releases. - Talk with customers, synthesize feedback, and make product decisions without relying on a dedicated product manager. - Build and optimize agents across voice, SMS, and email, including low-latency voice experiences and persistent conversation state. - Set quality practices for non-deterministic systems, including evaluations, prompt versioning, guardrails, and drift detection. - Work across React and Next.js frontends, Node.js backends, and Python services. WHAT WE'RE LOOKING FOR - Three to eight years of full-stack engineering experience, with a track record of shipping zero-to-one products at startups, large technology companies, or as a founder. - Strong production experience with TypeScript, Node.js, React, and Next.js, plus experience with Python services. - Hands-on experience building production systems with LLM APIs or agent SDKs. - Depth in at least one area such as voice or SMS agents, agent state and memory, evaluations and guardrails, or B2B2C and marketplace products. - Experience with low-latency systems, customer discovery, and making product decisions independently. - Strong computer science fundamentals; founder experience with demonstrated traction is also valued. - Availability for occasional intense work periods during launches or major customer milestones. COMPENSATION & BENEFITS Compensation is $180,000 to $250,000 USD annually. Visa sponsorship is not available. LOCATION On-site in New York, New York, United States.