Senior Director, Enterprise Architecture - Cloud

Accelerate your success  Colliers? As one of Canada’s leading commercial real estate services firms, we are driven by our mission to accelerate success for our people, clients, and communities. A career at Colliers gives you the opportunity to make an impact, advance your career, and collaborate with top-tier talent. Don’t just take our word for it – we’ve been recognized as a top employer on a number of prestigious lists, including Best Workplaces in Canada, Best Workplaces for Women, Best Workplaces with Most Trusted Executive Teams, and Best Workplaces for Inclusion, among others.

Onsite Role Toronto, Ontario

About the role:

We are hiring a visionary yet hands‑on leader to drive our critical transformation from Azure to Google Cloud Platform (GCP). This is a defining moment in our digital evolution. You will architect the foundation that enables our Digital Transformation and AI Adoption, moving us from legacy patterns to a cloud‑native, automated, and secure future.

As the Senior Director of Cloud Architecture, you will unify our global cloud strategy and establish a Cloud Center of Excellence (CCoE) to instill governance, financial discipline, and engineering rigor. You must be comfortable operating at all altitudes — equally adept at articulating value to the C‑Suite as you are drawing detailed architecture diagrams, reviewing Terraform configurations, and leading white‑boarding sessions with engineers.

Lead the enterprise migration from Azure to GCP, defining the target landing zone architecture, resource hierarchy (Organization/Folders/Projects), network topology (Shared VPCs, Interconnects, Cloud VPN), and identity federation strategy (Azure AD → Workforce Identity Federation).

Develop a migration factory approach to prioritize and move workloads, balancing "lift and shift" speed with "modernize" value (e.g., leveraging GKE Autopilot, Cloud Run, and serverless patterns).

Create and own the multi‑year Cloud Strategy roadmap, ensuring every architectural decision enables business agility, cost efficiency, and security outcomes.

Establish a Cloud Center of Excellence (CCoE) as a hub for enablement rather than a bottleneck, providing standards, reusable modules, and coaching to teams.

Build an Internal Developer Platform (IDP) with "golden paths" (IaC templates, CI/CD pipelines, secrets management, observability) and policy‑as‑code guardrails to accelerate delivery.

Lead Fin Ops discipline:
Define tagging/labeling standards, implement showback/chargeback models, automated cost policies, and manage the Committed Use Discount (CUD) strategy with forecasting. Partner with Finance on budgets and variance analysis.

Architect high‑performance infrastructure required for AI Adoption, including scalable patterns for GKE, GPU/TPU resource management and quotas, and high‑throughput networking for data payloads.

Partner with Data & AI leadership to product ionize Vertex AI, establishing model governance (lineage, drift detection, audit) and MLOps pipelines.

Accelerate modern app delivery using serverless (Cloud Run), event‑driven patterns (Pub/Sub, Eventarc), and managed data services.

Regular review of Terraform modules, Git Hub Actions/Cloud Deploy configurations, and Kubernetes manifests.

Lead Proof of Concepts (POCs) and service evaluations to validate newCP services prior to enterprise rollout; publish decision records.

Define Site Reliability Engineering (SRE) standards (SLOs, error budgets, incident management, runbooks) and Disaster Recovery (DR) patterns.

Manage relationships with Google Cloud, GSIs/MSPs, and professional services partners; set standards for partner delivery quality.

Mentor Principal Architects and Lead Engineers, raising the technical bar and fostering a learning culture.

What you bring:

15+ years of technology experience, with at least 7+ years in a senior architecture role leading complex cloud initiatives.

Bachelor’s or master’s degree in computer science, Engineering, Information Systems, or a related field.

Proven success leading a large‑scale migration to Google Cloud Platform (GCP), ideally from a legacy or alternative cloud environment (Azure/AWS).

Experience establishing or leading…