Senior Specialist, IT Infrastructure

Senior Specialist, IT Infrastructure

Date: Sep 15, 2026

Location: Toronto, ON, CA

Summary

We are seeking a highly skilled, hands-on Technical Lead to design, build, nd 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/CGP). You will also directly manager underlying operating systems (Linuz & 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.

• Strong analytical, troubleshooting and problem solving skills.
• Good ability to plan projects and tasks.
• Good understanding of IT requirements for an end to end solution, including security, business continuity, disaster recovery, risk analysis and prepare business case
• In‑depth knowledge of the Windows OS (server and client) and the desktop operating environment. Linux and other mainstream OS knowledge will be helpful.
• Advanced knowledge of infrastructure service management & diagnostic tools and processes

Apply solid CCNA‑level networking fundamentals to configure VNet/VPC peering, Subnetting (CIDR), DNS, routing, load balancing, and secure site‑to‑site VPN connectivity between cloud and VMware/Hyper‑V on‑premise environments.

• Strong Working and handons knowledge:

  Cloud Platforms: Azure (Primary), AWS, GCP

  Virtualization: VMware (vSphere/ESXi), Hyper‑V

  Operating Systems: Enterprise Linux, Windows Server

  Containers: Kubernetes (AKS, EKS, GKE, On‑prem), OpenShift

  IaC & Config: Terraform, Ansible

  Coding/Scripting: Python (Mandatory), Shell/Bash, PowerShell

  CI/CD Pipelines: Azure DevOps, GitLab CI/CD

  Networking: CCNA basics, Cloud VNets/VPCs, VPNs, Firewalls

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.

The stated range includes Base Salary and target Short‑Term Incentive (STI) compensation only. A comprehensive benefits package is offered in addition to this range. The range described in this posting is an estimate by the Company, and may change based on several factors, including but not limited to a change in the duties covered by the job posting, or the credentials, experience or geographic jurisdiction of the successful candidate.

Salary + Incentive = 104,000 - 157,000 (CAD)

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 Degreeor consideration of an equivalent combination of education and experience.

Educational Requirements may vary by Geography

Notes

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. At Celestica we are committed to fostering an inclusive, accessible environment, where all employees and customers feel valued, respected and supported. Special arrangements can be made for candidates who need it throughout the hiring process. Please indicate your needs and we will work with you to meet them.

COMPANY OVERVIEW:

Celestica, Inc. (NYSE: CLS; TSX: CLS) is a technology leader dedicated to driving customer success and market advancements. With deep expertise in design, engineering, manufacturing, supply chain, and platform solutions, Celestica enables critical data center infrastructure for AI, cloud, and hybrid cloud and advances technologies in high‑growth markets. With a talented team and a strategic global network, Celestica helps its customers achieve competitive advantages.

Today, Celestica delivers innovative supply chain solutions globally to customers in strategic two operating and reporting segments: Advanced Technology Solutions (ATS) and Connectivity and Cloud Solutions (CC):

ATS: This segment serves customers in complex, regulated and high‑reliability markets such as Industrial & Smart Energy, Aerospace & Defense, Semiconductor Capital Equipment, and HealthTech. It is engineering led, with deep expertise in design, manufacturing and lifecycle solutions.

CCS: This segment focuses on high‑performance technology solutions and services for the data center, serving hyperscalers, digital native customers and enterprises. Celestica's Platform Solutions offering provides innovative and customizable computing, storage and networking solutions enabling AI‑driven growth.

Built on a legacy of trust and performance, Celestica has earned its reputation by delivering results in complex and fast‑changing markets. Celestica exceeds customer expectations by identifying trends and staying ahead of the curve. Backed by comprehensive capabilities and a global network across North America, Europe and Asia, Celestica helps customers gain competitive advantage with the quality, flexibility and resiliency they need to respond quickly to shifts in demand. Guided by a bold vision to accelerate market advancements, Celestica delivers innovative solutions and technologies that turn complexity into opportunity. Anchored in teamwork and commitment, Celestica strives to be the most trusted partner to its customers and colleagues worldwide.

We use artificial intelligence tools to assist in screening and assessing applications for this role. All hiring decisions involve human review.

This posting is for an existing vacancy.

Celestica would like to thank all applicants, however, only qualified applicants will be contacted.

Celestica does not accept unsolicited resumes from recruitment agencies or fee based recruitment services.

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