Systems and Network Administrator

About the Opportunity

Our client is seeking a skilled and motivated Systems Administrator to join their IT team. This role is ideal for someone who thrives in a fast-paced environment and enjoys owning the stability, security, and performance of core infrastructure.

This position is heavily focused on systems administration, particularly within the Microsoft 365 ecosystem, while also requiring a solid foundation in networking. The successful candidate will play a key role in maintaining secure, reliable systems while supporting ongoing modernization initiatives.

Key Responsibilities

Systems Administration & Infrastructure

• Administer and support Microsoft 365 services, including Exchange Online, SharePoint, Teams, and identity management.
• Manage user access, authentication, and security policies across cloud and on-prem environments.
• Monitor and maintain servers, storage, backups, and system performance.
• Perform patching, updates, and proactive maintenance to ensure system health and reliability.
• Support disaster recovery planning and execution.

Security & Compliance

• Maintain and enhance Microsoft 365 security posture, including identity protection, endpoint security, and data governance.
• Monitor for vulnerabilities and respond to security incidents.
• Maintain logs, access controls, and configurations aligned with security best practices.
• Assist with audits and compliance-related activities.

Networking Support

• Support and troubleshoot network infrastructure including switches, firewalls, and connectivity.
• Assist with performance monitoring, VPNs, and general network health.
• Collaborate with internal or external teams on network-related projects.

Projects & Continuous Improvement

• Participate in infrastructure upgrades, system implementations, and environment optimization.
• Contribute to modernization initiatives across cloud and enterprise platforms.
• Identify opportunities to improve performance, security, and user experience.

Business Systems & Collaboration

• Work closely with internal stakeholders to support collaboration tools such as SharePoint and Teams.
• Assist in optimizing usage and adoption of Microsoft 365 platforms.
• Support or learn administration of ERP systems, with a willingness to develop skills in Business Central.

Support & Documentation

• Provide Tier 2 support for escalated technical issues.
• Create and maintain clear technical documentation.
• Contribute to process improvements and knowledge sharing across the IT team.

Qualifications

• 5 plus years of experience in systems administration.
• Strong hands-on experience with Microsoft 365, including:
• Exchange Online
• SharePoint Online
• Microsoft Teams
• Identity and access management
• Security and compliance features
• Experience supporting Windows environments; exposure to Linux is an asset.
• Solid understanding of networking fundamentals including TCP/IP, VPNs, and firewall concepts.
• Familiarity with cybersecurity principles and best practices.
• Experience with IT service management and ticketing systems.
• Strong communication and stakeholder collaboration skills.

Nice to Have

• Experience with ERP systems or willingness to learn Business Central administration.
• Industry certifications related to Microsoft 365, systems administration, or cybersecurity.
• Exposure to endpoint management and device policies.

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more.

Questions? Call your local office at 1.888.490.4429. All applicants applying for Canadian job openings must be authorized to work in Canada.

Only job postings for jobs located in Quebec appear in French.

© 2025 Robert Half. By clicking “Apply,” you’re agreeing to Robert Half’s Terms of Use and Privacy Notice.