Senior Infrastructure Engineer

McKesson•Mississauga, ON

2d•$99,100 - $132,100

About The Position

The Senior Infrastructure Engineer is responsible for planning, designing, and executing enterprise infrastructure modernization initiatives, including large‑scale migrations from legacy on‑premises environments to Azure Local and hybrid Azure cloud platforms. This role works in close partnership with engineering, architecture, application, operations, and cybersecurity teams to deliver secure, scalable, and resilient infrastructure solutions. The ideal candidate brings deep hands‑on technical expertise across VMware, Microsoft Azure, Azure Local, core server platforms, and automation, with a proven track record of delivering complex data center and enterprise migrations that achieve measurable improvements in performance, reliability, scalability, and cost optimization. This role requires strong engineering judgment, the ability to execute technically complex work end‑to‑end, and comfort operating in highly regulated, large‑scale enterprise environments. The Senior Infrastructure Engineer plays a critical role in modernizing McKesson’s infrastructure, accelerating cloud adoption, improving platform reliability, reducing technical debt, and delivering tangible business value across the organization.

Requirements

8+ years of hands‑on experience in enterprise infrastructure or systems engineering roles supporting large‑scale, business‑critical environments
Bachelor’s degree in Computer Science, Computer Engineering, or a related discipline, or equivalent hands‑on industry experience.
Expertise in enterprise operating systems, Microsoft Azure, VMware, and enterprise storage platforms, with strong experience designing, building, operating, and troubleshooting hybrid architectures across on-premises and Azure environments.
Proven track record of executing large‑scale server and workload migrations from on‑premises environments to hybrid and public cloud platforms.
Advanced proficiency in PowerShell scripting to automate infrastructure provisioning, configuration, migration activities, and ongoing operational tasks.
Strong working knowledge of application architecture and deployment processes, with the ability to align infrastructure design and implementation to application and business requirements.
Ability to lead complex infrastructure modernization and migration initiatives, driving technical execution from design through implementation across on‑premises, Azure Local, and hybrid Azure environments.
Apply strong engineering judgment to plan, build, and implement infrastructure solutions that meet enterprise requirements for security, reliability, performance, and compliance.
Anticipate and manage technical risks and dependencies throughout infrastructure and migration projects, ensuring stable implementations with minimal operational disruption.
Serve as a post‑implementation escalation point to analyze, troubleshoot, and remediate infrastructure issues when required, ensuring long‑term solution stability and resilience.
Operate with a high degree of ownership and accountability, independently prioritizing work, managing deliverables, and executing within defined project timelines and change windows.
Collaborate effectively with engineering, architecture, application, operations, and cybersecurity teams to deliver end‑to‑end infrastructure solutions aligned with McKesson standards.
Demonstrate clear and effective written and verbal communication skills in English, with the ability to articulate technical designs, risks, implementation outcomes, and recommendations to both technical and non-technical stakeholders.

Responsibilities

Plan, design, and implement migration initiatives across on‑premises, hybrid, and Azure cloud environments.
Architect scalable, resilient, and secure infrastructure solutions aligned with McKesson enterprise standards.
Evaluate legacy infrastructure and define modernization and migration strategies that support business objectives.
Deliver migration plans that achieve documented performance improvements, availability enhancements, or cost savings.
Lead the planning and execution of large-scale server and data center migrations to Azure Local and hybrid cloud environments, ensuring stability, performance, and minimal operational disruption.
Partner with application teams to align infrastructure migrations with application architecture and deployment processes.
Leverage Infrastructure as Code (IaC) tools with Terraform or Ansible to deliver scalable, repeatable, and governance-aligned compute environments that support enterprise reliability and compliance.
Maintain accurate and up-to-date system documentation across on-premises, hybrid, and cloud platforms, including the creation, maintenance, and retirement (purging) of Configuration Management Database (CMDB) records, ensuring infrastructure assets, configuration items, and dependencies are properly documented to support operational integrity, lifecycle management, and audit readiness.
Utilize and adhere to the McKesson Change Management process to plan, review, and implement changes within production and disaster recovery environments, ensuring minimal disruption and controlled risk.
Participate in change reviews, implementation planning, and post‑implementation validation to confirm changes meet technical, operational, and business requirements.
Ensure infrastructure solutions comply with McKesson cybersecurity, compliance, and operational policies.
Collaborate with compute, network, storage, operations, and cybersecurity teams to ensure end‑to‑end solution integrity and operational readiness.
Act as a post-migration escalation point for complex infrastructure issues, providing root cause analysis and remediation, while serving as a trusted technical advisor who clearly communicates recommendations, outcomes, and risks to both technical and non-technical stakeholders.
Seek to provide candid and timely feedback to improve performance; openly share information; foster teamwork and innovation by involving team members in problem-solving, decision-making, and creative thinking.
Ensure that requirements to internal and external customers are met in a timely and cost-effective manner; solicit feedback from customers to identify opportunities to improve products and/or services; resolve minor conflicts and involve team members in problem resolution.
Apply decision-making authority and autonomy needed to deliver accountabilities of job/role; seek approval from others on matters outside of job/role scope; when required, make decisions regarding the work and development of project team members.
Build internal and external relationships with key suppliers, customers, and internal service providers, with an emphasis on facilitating successful job/role responsibilities.
Respect and adhere to McKesson Standards, Policies, and Procedures.
Meet job performance standards and objectives outlined in the progress and appraisal guidelines.