Senior Specialist, IT Infrastructure in Toronto

We are seeking a highly skilled, hands-on Technical Lead to design, build, and actively engineer our enterprise cloud and hybrid platform infrastructure. The candidate will directly write code, engineer systems, configure virtual networks, and troubleshoot complex production workloads.

Operating with a product-based environment, you will serve as the primary technical authority for our infrastructure, heavily leveraging Microsoft Azure as our primary cloud foundation alongside secondary multi-cloud setups (AWS/GCP). You will also directly manage underlying operating systems (Linux & Windows) and virtualization platforms (VMware, Hyper-V) across hybrid deployments.

Detailed Description

• Directly provision, configure, and maintain production workloads on Microsoft Azure (Primary), with working operational experience on AWS and GCP.
• Hands-on administration of enterprise virtualization platforms, specifically VMware vSphere/ESXi and Microsoft Hyper-V, for hybrid cloud integrations and compute management.
• Write, test, and deploy modular Terraform scripts for Azure, multi-cloud, and virtualized resource orchestration.
• Automate configuration management, VM patching, and state compliance using Ansible playbooks.
• Hands-on systems engineering, performance tuning, and hardening across enterprise Linux (RHEL, Ubuntu, CentOS) and Windows Server environments.
• Diagnose and resolve OS-level bottlenecks, kernel/system performance issues, disk/volume allocations, and active directory/identity integrations.
• Directly deploy, manage, and scale enterprise Kubernetes clusters across public cloud and on-premise platforms: AKS (Azure), EKS (AWS), GKE (GCP), bare-metal/virtualized on-prem Kubernetes, and Red Hat OpenShift.
• Implement ingress routing, service meshes, cluster security policies, CNI plugins, and monitoring setups.
• Develop operational tooling, continuous delivery scripts, and cloud automation using Python (Mandatory) and advanced Shell/Bash (plus PowerShell for Windows automation).
• Build, manage, and optimize enterprise build and release pipelines using Azure DevOps (ADO) and GitLab CI/CD.

Physical Demands

Duties of this position are performed in a normal office environment. Duties may require extended periods of sitting and sustained visual concentration on a computer monitor or on numbers and other detailed data. Repetitive manual movements (e.g., data entry, using a computer mouse, using a calculator, etc.) are frequently required.

Typical Experience

7+ years of overall IT experience with a strong background in hands-on Systems, Cloud, and DevOps engineering. Proficient hands-on coding in Python (mandatory) and Shell/PowerShell scripting. Deep practical experience with Linux/Windows administration, VMware/Hyper-V hypervisors, Terraform IaC, and Kubernetes/OpenShift container management.

Typical Education

Bachelor's Degree or consideration of an equivalent combination of education and experience. Educational Requirements may vary by Geography.

This job description is not intended to be an exhaustive list of all duties and responsibilities of the position. Employees are held accountable for all duties of the job. Job duties and the % of time identified for any function are subject to change at any time.

Celestica is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.