Founding Engineer

ABOUT THE ROLE Join an early-stage AI company building multimodal agents for customer conversations across voice, SMS, and email. You will own a core product or engineering domain end to end, working closely with customers and the team to shape the product and bring improvements into production. WHAT YOU'LL DO - Own a product or infrastructure domain from architecture through daily production releases. - Speak with customers, synthesize feedback, and make product decisions without a dedicated product manager. - Build and optimize multimodal agents, including low-latency voice experiences and persistent conversation state across channels. - 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 and scaling products from early development into broader use. - Production proficiency in TypeScript, Node.js, React, and Next.js, plus experience building Python services. - Hands-on experience shipping production systems with LLM APIs or agent SDKs. - Depth in at least one area: production voice or SMS agents, long-running agent state and memory, agent evaluations and guardrails, or B2B2C and marketplace products. - Experience making independent product decisions, conducting customer discovery, and owning projects through launch. - Strong AI or agentic systems experience, including work with low-latency requirements and unpredictable system behavior. Voice pipeline or evaluation tooling experience is useful. - Comfort working in an early-stage environment with changing priorities and limited process. COMPENSATION & BENEFITS Base salary: $180,000 to $250,000 annually. Visa sponsorship is not available. LOCATION On-site, five days per week in New York, New York.