Founding AI Engineer

About the Role

Join an early-stage SaaS team as its fifth engineer and lead the technical direction of a real-time AI voice agent for sales. The agent joins live prospect calls, guides product demos through a browser, and supports follow-up through the sales process.

What You'll Do

• Build the agent's reasoning, tool use, memory, and ability to recover when live conversations go off script while meeting real-time latency requirements.

• Develop evaluation pipelines and data workflows that turn real sales conversations into measurable improvements, and fine-tune models where useful.

• Improve the reliability of browser-based product demonstrations conducted during live calls.

• Ship end-to-end product work using TypeScript, Node.js, and Next.js, working directly with customers and design partners.

• Set technical direction for model and tooling choices, architecture, and future agent capabilities.

What We're Looking For

• Four to seven years of experience as an AI engineer, including at least one year owning a user-facing production agent with real users or meaningful usage.

• End-to-end experience shipping production AI agents, including evaluation, observability, and cost optimization.

• At least one year working with real-time voice technologies such as WebRTC, LiveKit, or streaming systems, or browser agents using tools such as Playwright.

• Proficiency in TypeScript, Node.js, and Next.js, with experience using LLM APIs and browser automation.

• Background in voice AI, AI sales, browser agents, or fast-growing AI companies; experience with reinforcement learning or fine-tuning is relevant.

• Experience building with customers or design partners in a customer-facing engineering role.

Compensation & Benefits

Base salary is $216,000 to $250,000 annually. Visa sponsorship is available.

Location

On-site in New York, United States. Candidates must be based in New York or able to relocate from their first day.