Voice Agent Engineer (Full stack)

About 11x

At 11x, we're building autonomous digital workers that handle routine work end-to-end, freeing humans to focus on what they do best—creating, innovating, and building meaningful relationships. We're one of the world’s fastest-growing AI companies. We've raised $75M+ from leading investors including a16z and Benchmark. Our team works in-person in our San Francisco office.

About The Role

As a Voice Agent Engineer, you’ll be the connective tissue between our GTM AI agents and real-world customer outcomes. AI is redefining the way people sell - and the Voice team is on the front lines of making that happen.

What You’ll Do

* Design, build, and iterate on fullstack systems that power AI agents from concept to deployment

* Research and evaluate new approaches to agent orchestration, prompting strategies, and model alignment

* Collaborate with product, design, and GTM teams to improve UX and usability for non-technical users

* Share learnings, document findings, and contribute to the evolution of internal best practices

* Participate in peer reviews, brainstorming sessions, and technical deep dives with our global team

Ideal Candidates Have

* 3+ years of experience in a product-oriented software engineering role

* A CS/Engineering degree & professional experience; bonus if you’ve worked in a startup, consulting, or customer-facing technical role before

* Strong programming fundamentals in Typescript, React, NextJS, and NodeJS

* Familiarity with APIs, data flows, and debugging live systems

* Interest in AI/ML, conversational AI, or voice technologies

* Responsive and proactive in addressing customer needs with bias for action - comfortable shipping quickly and improving continuously in live deployments

Base salary range: $130,000 – $160,000

* Final offer will be based on a variety of factors, including role level, relevant experience, skills, and job-related expertise.