Senior Software Engineer, AI

Justworks

toronto, on, Canada
Full-time
Posted June 01, 2026

Job Description

Who You Are

You are self‑driven, curious, and eager to explore new technologies. You have demonstrated the ability to build, deploy, and maintain large‑scale, complex applications, and you care more about solutions that impact the customer experience than a particular tool or framework.

About the role

You will join a small, highly autonomous cross‑functional team to build AI agents that fundamentally transform how operations work at scale. Instead of writing bespoke software for each workflow, we are developing an agent platform that can read operational knowledge, reason about it in context, and execute tasks end‑to‑end. This approach allows us to scale complexity through knowledge and reasoning, rather than simply through code.

This is an opportunity to join a foundational team that currently consists of fewer than five engineers. The work spans critical areas including LLM‑powered agent design, robust backend service architecture, tool and i...