Senior Site Reliability Engineer (Windows/Linux)

Loblaw Companies Limited; Brampton; On-site; CAD 90,000 - 120,000; Full time

Job summary

A leading Canadian retailer is seeking a Senior SRE to ensure the reliability and efficiency of infrastructure services. In this role, you will manage large-scale Windows and Linux environments, develop Infrastructure as Code, and lead incident response efforts. Ideal candidates have experience with cloud infrastructure, Windows/Linux administration, and strong automation skills, making this an exciting opportunity for impactful work.

Benefits

Comprehensive training

Flexible work environment

Competitive benefits

Qualifications

• Hands-on experience managing cloud-based infrastructure (GCP, Azure, OCI or AWS).
• Strong hands-on experience with Windows Server administration and/or Linux administration.
• Expertise in Infrastructure-as-Code, scripting, and automation.

Responsibilities

• Manage, monitor, and optimize large-scale Windows Server and UNIX/Linux environments.
• Develop and maintain Infrastructure as Code using Terraform, Ansible, or PowerShell DSC.
• Lead incident response efforts for production outages.

Skills

Cloud infrastructure management

Windows Server administration

Linux administration

Infrastructure-as-Code

Networking fundamentals

Incident response

Problem-solving

Communication skills

Tools

Terraform

Ansible

PowerShell

Python

Bash

Job description

Overview

Come make your difference in communities across Canada, where authenticity, trust and making connections is valued – as we shape the future of Canadian retail, together. Our unique position as one of the country's largest employers, coupled with our commitment to positively impact the lives of all Canadians, provides our colleagues a range of opportunities and experiences to help Canadians Live Life Well®.

At Loblaw Companies Limited, we succeed through collaboration and commitment and set a high bar for ourselves and those around us. Whether you are just starting your career, re-entering the workforce, or looking for a new job, this is where you belong.

Senior SRE (Windows/Linux)

As a Senior SRE (Windows/Linux), you will lead efforts to ensure the reliability, availability, and efficiency of our infrastructure and services. You’ll drive proactive monitoring, incident response, and root cause analysis, while partnering with cross-functional teams to design systems that are fault-tolerant and self-healing.

In this role, you’ll play a key part in shaping our reliability culture, leading initiatives to improve availability, observability, automation, and deployment pipelines. Your experience will help establish best practices that scale with our growth.

What You’ll Do:

• Manage, monitor, and optimize large-scale Windows Server (2016/2019/2022), and/or UNIX/Linux environments (AIX, Linux - Rocky, SUSE, OpenSUSE).
• Develop and maintain Infrastructure as Code (IaC) using tools such as Terraform, Ansible, and/or PowerShell DSC.
• Identify performance bottlenecks across systems and networks and implement long-term fixes.
• Ensure systems are hardened, patched, and compliant with Enterprise OS governance standards. Manage OS-level security using Windows GPOs and/or SELinux.
• Lead incident response efforts for production outages and performance degradations.
• Conduct post-incident reviews and drive continuous improvements to reduce MTTR and improve resilience.

What You Bring:

• Hands-on experience managing cloud-based infrastructure (GCP, Azure, OCI or AWS). Experience supporting or migrating from on-premises to cloud is considered an asset.
• Strong hands-on experience with Windows Server administration (2016/2019/2022) and/or Linux administration (RHEL, Rocky, SUSE or Ubuntu).
• Expertise in Infrastructure-as-Code, scripting and automation: Terraform, Ansible, PowerShell, Python, Bash, or similar.
• Deep understanding of networking fundamentals (TCP/IP, DNS, load balancing, firewalls).
• Experience leading incident response, root cause analysis, and postmortems.
• Excellent problem-solving and communication skills; mentorship mindset.

Our commitment to Sustainability and Social Impact is an essential part of the way we do business, and we focus our attention on areas where we can have the greatest impact. Our approach to sustainability and social impact is based on three pillars – Environment, Sourcing and Community – and we are constantly looking for ways to demonstrate leadership in these important areas. Our CORE Values – Care, Ownership, Respect and Excellence – guide all our decision-making and come to life through our Blue Culture. We offer our colleagues progressive careers, comprehensive training, flexibility, and other competitive benefits – these are some of the many reasons why we are one of Canada’s Top Employers, Canada’s Best Diversity Employers, Canada’s Greenest Employers & Canada’s Top Employers for Young People.

If you are unsure whether your experience matches every requirement above, we encourage you to apply anyway. We are looking for varied perspectives which include diverse experiences that we can add to our team.

We have a long-standing focus on diversity, equity and inclusion because we know it will make our company a better place to work and shop. We are committed to creating accessible environments for our colleagues, candidates and customers. Requests for accommodation due to a disability (which may be visible or invisible, temporary or permanent) can be made at any stage of application and employment. We encourage candidates to make their accommodation needs known so that we can provide equitable opportunities.

Please Note: Candidates who are 18 years or older are required to complete a criminal background check. Details will be provided through the application process.

We are 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, disability, or veteran status.

Thank you for your interest in Loblaw Companies Limited.