Fullstack Software Engineer, AI Agents at 11x

• Job Location San Francisco, CA
• Seniority Mid-Senior Level
• Type Full-time

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Description

Why 11x Now 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 achieved a 20x increase in ARR and raised $75M+ from leading investors including a16z and Benchmark.

Our team works in-person in our San Francisco office.

About The Role We're looking for a fullstack engineer with a passion for applied research and cross-functional collaboration.

In this role, you’ll work closely with engineering leadership and our AI partners to prototype, build, and scale the next generation of autonomous digital workers.

This is an immersive opportunity to deepen your expertise in large language model applications, system design, and human-AI interaction—while learning how fast-moving AI companies operate from the inside.

You’ll gain hands-on exposure to the latest model capabilities, contribute to internal experimentation, and help translate cutting-edge ideas into real-world tools.