Full-time

Senior Fullstack Software Engineer, AI Agents

Posted by 11x • Toronto, ON, Canada

📍 Toronto, ON 🕒 February 25, 2026

About the Role

Senior Fullstack Software Engineer, AI Agents

Apply for the Senior Fullstack Software Engineer, AI Agents role at 11x .

About 11x

At 11x, we’re building autonomous digital workers that handle routine work end-to-end, freeing humans to focus on creating, innovating, and building meaningful relationships. We’re one of the world’s fastest‑growing AI companies, achieving a 20× increase in ARR and raising $75M+ from leading investors including a16z and Benchmark. The 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 in...

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