AI / ML Engineer (Developer Tools & Agents)

Toronto, Canada | Up to $280k CAD

Join a highly technical team shaping how AI agents interact with the web by building the tools, frameworks, and developer experiences that power the next generation of browser-based AI systems. This is a role for engineers who care as much about developer experience and usability as they do about system design and performance.

What you’ll be working on

Building developer tools that let engineers run and orchestrate browser agents on top of a API
Running experiments to understand which models, prompts, and agent harnesses actually work in production-like conditions
Designing eval sets to benchmark agent performance against realistic, messy web scenarios
Creating open-source demos that showcase what’s possible with AI agents and browser automation
Working directly with customers to help them integrate and deploy custom agent workflows
Writing technical deep-dives sharing insights from real-world debugging and system behaviour

What we’re looking for

4+ years of experience writing high-quality production code
Strong “AI-native” mindset and active use of AI tools and agents in daily workflows
Experience shipping full-stack features end-to-end (frontend, backend, and systems integration)
Interest in developer tooling, APIs, and developer experience design
Strong communication skills, with ability to write clear technical content
Strong product intuition and ability to turn ambiguous problems into usable tools
Comfortable working in highly autonomous, fast-moving environments

What’s in it for you

Define how developers build with AI agents on the web from the ground up
Work across infrastructure, product, and applied AI in a single role
Ship open-source tools and demos used by a growing developer community
Influence real product direction through experiments and developer feedback loops
Work closely with early customers and see your work used in production quickly
High ownership, low process, and direct impact on a fast-growing platform

Apply now

If you’re excited by building tools that make AI agents actually usable for developers - and not just impressive in demos - apply today!

UMATR

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AI / ML Engineer (Developer Tools & Agents)