Systems Administrator

Flexstaf IT; Mississauga; On-site; CAD 70,000 - 90,000; Full time

Job summary

An IT solutions company in Peel Region, Mississauga is seeking an intermediate systems administrator. This role requires 3–5 years of experience in managing Windows Server environments and active directory. Responsibilities include installing and maintaining servers, providing end-user support, and ensuring network security compliance. The ideal candidate will also have knowledge of networking hardware and Microsoft technologies, along with a degree in IT or Computer Science. Certifications like CISM or Microsoft Certified Solutions Associate are preferred.

Qualifications

• 3–5 years of experience in system administration and IT support.
• Knowledge with MS Entra ID and SSO.
• Experience migrating to and administering Windows Server 2022/25.

Responsibilities

• Install, configure, and maintain Windows Servers and network devices.
• Provide Tier 1 and Tier 2 support for desktops and laptops.
• Ensure compliance with disaster recovery requirements.

Skills

Windows Server environments

VMware ESX 6.5+

Active Directory administration

Networking hardware

Microsoft technologies (Exchange/M365, SharePoint, Azure, Windows 11)

System and security updates

Education

Degree or diploma in Information Technology, Computer Science, or related field

Tools

Kaspersky

CrowdStrike

Veeam/N-able

Cisco Meraki

Job description

Overview

We are looking for an intermediate systems administrator to work in a Windows environment with a small team of 2 other system admins. You will have 3-5 years experience working in Windows Server environments (physical and virtual), VMware ESX 6.5+, and AD administration, along with strong knowledge of networking hardware (firewalls, switches, routers) and Microsoft technologies (Exchange/M365, SharePoint, Azure, Windows 11).

Responsibilities

Infrastructure & Networking

• Install, configure, and maintain Windows Servers, Active Directory, storage, and network devices.
• Configure network components (switches, routers, VLANs, firewalls, SAN/NAS).
• Manage network security (firewalls, VPN, certificates, policies).
• Implement and maintain SSL/TLS certificates, DNSs.
• Monitor operational and security systems; interact with vendors and service providers.

Desktop & End-User Support

• Provide Tier 1 and Tier 2 support for desktops, laptops, and end-user systems.
• Support helpdesk operations, process work requests, and deliver exceptional customer service.
• Monitor tickets for SLA compliance and prioritize accordingly.

Security & Compliance

• Install and maintain antivirus, intrusion detection, and endpoint security software (e.g., Kaspersky, CrowdStrike).
• Ensure compliance with disaster recovery RTO and RPO requirements; contribute to DR planning and testing.
• Assist in capacity planning to meet application and project requirements.
• Participate in security incident resolution process and security remediation initiatives as needed; monitor operational and security systems and interact with vendors and service providers.

Systems and Application Environment Administration

• Administer Active Directory, DNS, DHCP, IIS, RDP, WSUS, and SQL servers.
• Perform patching, updates, and maintenance during scheduled windows.
• Maintain documentation for systems and processes.
• Participate in application releases, fixes, and change deployments for the different environments during normal business hours and during maintenance windows.

Knowledge, Skills & Abilities

• 3–5 years of experience in system administration and IT support with a college or university degree (preferred)
• Knowledge and experience with MS Entra ID and SSO
• Experience migrating and administering Windows Server 2022/25
• Expertise in Windows Server environments (physical and virtual), VMware ESX 6.5+, and AD administration.
• Proficiency with PC/Laptop hardware installation and support (remote, on-site).
• Strong knowledge of networking hardware (firewalls, switches, routers) and Microsoft technologies (Exchange/M365, SharePoint, Azure, Windows 11).
• Experience with SAN/NAS storage, backup solutions (Veeam/N-able), and Cisco Meraki.
• Familiarity with ITIL processes and service management.
• Proficiency in SSL certificate management, DNS administration, and security tools.
• Knowledge of .NET framework and SQL Server operations (backup, restore, performance tuning).

Education & Certifications

Post-secondary education – Degree or diploma in Information Technology, Computer Science, or a related field.

CISM Security certification and knowledge of Cybersecurity frameworks like NIST CSF and Cybersecure Canada

A+ Certification is an asset. Microsoft Office Specialist or Microsoft Certified Desktop Support Technician is ideal.

Preferred Certifications:

• Microsoft Certified Solutions Associate (MCSA) or Microsoft Certified: Windows Server Fundamentals
• VMware Certified Professional (VCP)
• CompTIA Network+ and Security+
• ITIL Foundation Certification
• Cisco CCNA
• Azure Fundamentals (AZ-900)

Additional Requirements

This person will be required to do system and security updates every 3 weeks on Sunday nights between 10:00 PM and Midnight.