Application Deadline: 10/29/2026 Address: 33 Dundas Street West Job Family Group: Technology Principal Engineer, AI Platform & Fabrics Description BMO is building the platform capabilities that make enterprise AI secure, governed, and scalable. We are seeking experienced Principal/Senior engineers to build and operate the core infrastructure that governs how AI runs at BMO: the AI Gateway, Policy Engine, Identity Fabric, AI Registry, Guardrails Runtime, and AI Observability. This is a build-and-run engineering role. You will own capabilities end to end; designing, shipping, and operating them in production, including on-call. You will not build the AI models or applications themselves (those are domain-owned); you build the governed platform they run on and the runtime evidence that proves they run within policy, across AWS, Azure, and Microsoft AI surfaces, under OSFI and OCC expectations. You are a hands‑on engineer who has built shared platform services at scale, cares deeply about operability, latency, and correctness, and understands that in a regulated

📌 Principal Engineer, Ai Platform (Toronto)
🏢 Bank of Montreal
📍 Toronto