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.