Systems Administrator - Mississauga - Flexstaf IT

    Flexstaf IT
    Flexstaf IT Mississauga

    5 days ago

    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.


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