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Senior Systems Analyst

Job in Mississauga, Ontario, Canada
Listing for: EllisDon
Full Time position
Listed on 2026-01-02
Job specializations:
  • IT/Tech
    Cloud Computing, Cybersecurity
Job Description & How to Apply Below

You as a Senior Systems Analyst will:

  • Develop and maintain enterprise architecture models, standards, and best practices for systems and applications.

  • Lead the design and implementation of data protection strategies, to safeguard against unauthorized access, modification, and deletion, including encryption, secure storage, IAM controls.

  • Provide expert technical guidance on security and compliance frameworks (e.g., ISO 27001, NIST, GDPR).

  • Drive architecture and strategic planning for scalable, modular, and integrated technology solutions.

  • Collaborate with cross-functional teams to ensure seamless integration of systems and data protection solutions.

  • Analyze system performance and security metrics; recommend and implement enhancements.

  • Prepare and present executive-level reports on infrastructure health, risk posture, and compliance status.

  • Diagnose and resolve complex configuration and troubleshooting issues across multi-vendor, multi-site environments.

  • Administer and optimize Microsoft 365 ecosystem (Exchange Online, SharePoint, Teams, Intune) for scalability and long-term growth.

  • Oversee cloud-based solutions (Azure, AWS, SaaS platforms), including DNS services, patching, and upgrades.

  • Manage NTFS and network share permissions, ensuring proper access control and governance.

  • Create and maintain comprehensive documentation for corporate systems and processes.

  • Stay current with emerging technologies and evaluate their applicability to enterprise environments.

  • Mentor and provide technical leadership to junior team members.

  • Foster a culture of continuous improvement, automation, and operational excellence.

  • Is this the right role for you?

  • Bachelor’s degree in Computer Science, Information Technology, or a related field.
  • 10+ years of full-time, industry-level experience as a Systems & Infrastructure Analyst or equivalent senior role.
  • Minimum 6+ years of IT support experience, including 2+ years administering Microsoft 365 (M365/O365), Microsoft Entra , Intune, and Active Directory Services.
  • Extensive experience in administration and maintenance of Active Directory, Group Policy (GPO), DHCP, DNS, DFS, ADFS, SMB, NTFS permissions.
  • Strong knowledge of storage technologies (Azure Cloud, SAN, NAS, DAS, Converged & Hyper-Converged) and cloud-based data protection solutions.
  • Hands-on experience with NASUNI hybrid cloud solutions is an asset.
  • Expertise in Microsoft 365 suite and Azure infrastructure, including Data Governance, Identity Management, and Single Sign-On (SSO).
  • Proficiency in Windows Server (2019, 2022, 2025) installation, configuration, patching, and security hardening.
  • Experience with SQL databases and Azure SQL Instance administration.
  • Strong understanding of Security Governance, Compliance, Incident Management, Change Management, and Risk Assessment.
  • Proven ability to manage hybrid enterprise networks (on-premises and cloud).
  • Familiarity with Power Shell scripting for automation and administration (asset).
  • Excellent problem-solving, analytical, and troubleshooting skills, with attention to detail and superior time/project management.
  • Self-motivated, able to work independently, and take initiative in a fast-paced environment.
  • Commitment to continuous learning and adoption of emerging technologies, especially in enterprise and construction environments.
  • Ellis Don is proud to provide this unique career opportunity that provides continuous learning, opportunity for growth, and a competitive compensation package within an environment that is committed to inclusion and respects diversity.

    Position Requirements
    10+ Years work experience
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