Senior Windows Administrator

Senior Windows Administrator

Work Mode: On-site

Location: Montreal, Quebec, Canada

Position Overview

We are seeking an experienced and proactive Senior Windows Administrator to join our Systems Administration team. The successful candidate will play a key role in managing, maintaining, securing, and optimizing our Windows server environment.

This position requires strong hands-on technical expertise, a proactive approach to problem-solving, and the ability to collaborate with various IT teams to ensure operational excellence and continuous improvement of our infrastructure.

Your future duties and responsibilities

Key Responsibilities

Windows Systems Administration

Install, configure, administer, and maintain Windows Server environments.

Ensure system availability, reliability, and performance through proactive monitoring, troubleshooting, and optimization.

Manage Active Directory, including domain controllers, user accounts, Group Policy Objects (GPOs), and security settings.

Perform patch management, system updates, and security remediation activities to protect systems from vulnerabilities.

Maintain backup, recovery, and disaster recovery solutions to minimize downtime and data loss.

Administer virtualization platforms such as VMware, Hyper-V, SimpliVity, and Citrix.

Support cloud-based services, including Azure Active Directory and Microsoft 365.

Participate in operating system upgrades and migrations (e.g., Windows Server 2016 to 2022).

Troubleshoot and resolve complex technical issues involving multiple applications and infrastructure components.

Collaboration \& Continuous Improvement

Collaborate with local and global IT teams, including Network, Security, Database, and Application teams, to support daily operations and deliver integrated technology solutions.

Develop and maintain operational procedures, documentation, and technical standards.

Stay current with emerging technologies and recommend improvements to enhance infrastructure efficiency, security, and scalability.

Provide input into hardware and software planning and budgeting activities.

Ensure compliance with organizational policies, industry standards, and regulatory requirements.

Required qualifications to be successful in this role

Required Qualifications

Education \& Experience

Bachelor’s degree or Master’s degree in Computer Science, Information Technology, or a related field, or equivalent experience.

Minimum 10 years of relevant experience in systems administration.

Minimum 7 years of hands-on experience managing Windows Server environments.

Technical Skills

Advanced expertise in Windows Server administration, Active Directory, and Group Policy Management.

Strong understanding of networking protocols including DNS, DHCP, and TCP/IP.

Strong knowledge of cybersecurity principles, including patch management, access controls, and vulnerability remediation.

Hands-on experience with virtualization technologies such as VMware, Hyper-V, SimpliVity, and Citrix.

Experience administering email and messaging platforms, including Microsoft 365 and Exchange.

Experience supporting operating system migrations and application migrations.

Strong ability to analyze and resolve complex technical issues across multiple platforms.

Professional Skills

Experience delivering IT services in a global and multicultural environment.

Excellent communication, organization, and problem-solving skills.

Ability to work independently while collaborating effectively with cross-functional teams.

Experience in the banking industry, particularly investment banking, is considered an asset.

Ideal Candidate Profile

We are looking for a highly skilled, detail-oriented, and solution-driven professional who can support mission-critical infrastructure while contributing to continuous improvement initiatives.

CGI provides a reasonable estimate of the salary range for this position. The determination of this range is based on various factors, including skill level, geographic market, experience, education, as well as professional licenses and certifications.

Compensation decisions are made based on the specific circumstances of each individual case. A reasonable estimate of the salary range for this position is $60,000 - $115,000 this position is currently vacant.

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Together, as owners, let’s turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you’ll reach your full potential because…

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company’s strategy and direction.

Your work creates value. You’ll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You’ll shape your career by joining a company built to grow and last. You’ll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

At CGI, we value the strength that diversity brings and are committed to fostering a workplace where everyone belongs. We collaborate with our clients to build more inclusive communities and empower all CGI partners to thrive. As an equal-opportunity employer, being able to perform your best during the recruitment process is important to us. If you require an accommodation, please inform your recruiter.

That same commitment to fairness extends to how we use technology. To support our recruitment team, AI tools may be used to help assess applications though they never replace human judgement. All hiring decisions remain entirely in the hands of our recruitment professionals.

To learn more about accessibility at CGI, contact us via email. Please note that this email is strictly for accessibility requests and cannot be used for application status inquiries.

Come join our team—one of the largest IT and business consulting services firms in the world.