Oshawa Power | IT Systems Administrator

IT Systems Administrator
The IT Systems Administrator is a pivotal member of our high-performing Technology team, primarily responsible for the administration, security, governance, and optimization of the organization’s Microsoft 365, Azure, endpoint management, and enterprise infrastructure environments. In this on-site role, you will act as a senior technical resource responsible for maintaining secure and compliant cloud and hybrid systems, administering enterprise collaboration and identity platforms, and driving modern workplace and cybersecurity initiatives across the organization.

We are seeking a highly capable Microsoft cloud and infrastructure professional who takes pride in technical excellence, ownership, and accountability. This role is heavily focused on Microsoft 365 administration, Azure identity and access management, Intune endpoint management, compliance and governance, data protection, retention policies, and enterprise cybersecurity operations. While traditional server and infrastructure responsibilities remain part of the role, the successful candidate will primarily focus on modern Microsoft cloud technologies, operational security, compliance enforcement, and enterprise systems management.

Microsoft 365, Azure & Enterprise Systems Administration

Independently administer, maintain, troubleshoot, and optimize Microsoft 365 and Azure environments across hybrid and cloud infrastructure;

Manage Microsoft 365 services including Exchange Online, SharePoint Online, Teams, OneDrive, Microsoft Defender, Purview, Copilot and Entra ID (Azure AD);

Administer Microsoft Intune including device enrollment, endpoint configuration, Autopilot deployments, application deployment, compliance policies, configuration profiles, and endpoint lifecycle management;

Configure and maintain Conditional Access Policies, multifactor authentication (MFA), identity governance, role-based access controls (RBAC), privileged identity management (PIM), and Zero Trust security controls;

Administer Microsoft Purview compliance solutions including Data Loss Prevention (DLP), retention policies, retention labels, sensitivity labels, eDiscovery, information governance, insider risk management, and compliance auditing;

Develop and enforce Microsoft 365 security baselines, endpoint compliance standards, device restrictions, mobile application management (MAM), and data protection policies;

Manage and secure the rollout of Copilot within the organization;

Manage Azure resources, Azure Virtual Desktop (AVD), cloud identity synchronization, hybrid integrations, and enterprise cloud governance initiatives;

Administer and support Microsoft Defender security platforms including Defender for Endpoint, Defender for Office 365, Defender for Identity, and Defender for Cloud Apps;

Monitor and respond to cybersecurity threats, risky sign-ins, identity alerts, endpoint incidents, compliance violations, and suspicious activity across cloud and on-premise environments;

Perform tenant administration including licensing management, service configuration, governance reviews, security assessments, and operational optimization;

Manage and maintain enterprise collaboration environments while ensuring secure access, data governance, and regulatory compliance requirements are consistently enforced;

Develop, maintain, and optimize PowerShell scripts and automation workflows for Microsoft 365 administration, reporting, compliance auditing, onboarding/offboarding, and operational efficiency;

Maintain detailed technical documentation including cloud architecture diagrams, SOPs, security standards, compliance procedures, and operational runbooks;

Maintain detailed technical documentation including cloud architecture diagrams, SOPs, security standards, compliance procedures, and operational runbooks;

Develop detailed technical procedures and runbooks for Microsoft 365 and Azure;
Develop scripts to automate routine tasks such as user provisioning, mailbox migration, and policy enforcement;

Evaluate new Microsoft 365 and Azure features and recommend adoption strategies;

Collaborate with cross‑functional teams to design and implement security controls and automation solutions;

Provide advisory support on emerging Microsoft technologies and cybersecurity trends;

Document best practices and lessons learned for future reference;

Serve as a subject‑matter expert for Microsoft 365 and Azure services within the organization;

Assist with audits and compliance reporting;

Continuously research and adopt new tools and processes to improve system reliability;

Perform regular security and configuration reviews to ensure best‑practice adherence;

Help develop secure deployment policies for new applications;

Maintain knowledge on Microsoft’s roadmap and feature releases;

Ensure alignment between IT and business objectives for cloud adoption.

Security, Compliance & Infrastructure Operations

Support enterprise cybersecurity operations including endpoint detection and response platforms, Managed Detection and Response (MDR), Extended Detection and Response (XDR), SIEM integrations, and security alert triage;

Administer Microsoft Sentinel, Microsoft Defender, endpoint security policies, threat protection platforms, and identity/access management solutions;

Perform vulnerability remediation, patch management, security hardening, and proactive maintenance across endpoints, servers, and cloud systems;

Support compliance initiatives, cybersecurity audits, disaster recovery testing, retention governance, and infrastructure risk assessments;

Assist with implementation and enforcement of organizational IT security standards, compliance frameworks, and governance best practices;

Monitor endpoint health, compliance status, encryption posture, update compliance, and security baselines across enterprise‑managed devices;

Manage backup solutions, disaster recovery procedures, and business continuity operations to ensure resiliency and data protection;

Support Windows Server environments including Active Directory, Group Policy Objects (GPOs), DNS, DHCP, file services, virtualization platforms, and hybrid identity integrations;

Administer virtualization platforms including VMware and Hyper‑V as required to support enterprise infrastructure operations;

Troubleshoot complex cloud, endpoint, identity, compliance, authentication, and infrastructure‑related issues with minimal supervision;

Technical Projects & Operational Support

Lead or assist in Microsoft 365, Azure, Intune, and cloud modernization initiatives including tenant migrations, endpoint modernization, security hardening, and compliance enhancements;

Support the evaluation and implementation of AI‑enabled tools, automation platforms, and cloud management solutions to improve operational efficiency and service delivery;

Configure, deploy, and maintain enterprise endpoint devices, mobile devices, collaboration technologies, and secure remote work solutions;

Serve as an escalation point for complex technical support issues involving Microsoft 365, Azure, Intune, identity management, endpoint compliance, and enterprise applications;

Coordinate the IT purchasing lifecycle by gathering technical requirements, evaluating solutions, and liaising with vendors and purchasing teams;

Proactively identify opportunities for process improvement, automation, cloud optimization, and AI‑assisted workflows;

Manage the lifecycle of enterprise IT assets including endpoint provisioning, device compliance, inventory management, maintenance scheduling, and secure disposal procedures;

WHAT YOU HAVE TO OFFER

Post‑secondary diploma or degree in Information Technology, Computer Science, Systems Administration, Cybersecurity, or a related field;

5+ years of progressive experience in Microsoft 365 administration, Azure infrastructure, endpoint management, and enterprise systems support;

Strong hands‑on experience administering Microsoft 365, Entra ID (Azure AD), Intune, Exchange Online, SharePoint Online, Teams, and enterprise cloud environments;

Relevant certifications including Microsoft 365 Certified: Enterprise Administrator Expert, Azure Administrator Associate, Microsoft Security Administrator, Intune, cybersecurity, or infrastructure‑related certifications are highly desirable;

Advanced knowledge of Microsoft 365 governance, compliance management, retention policies, DLP, Conditional Access, identity security, and endpoint compliance frameworks;

Strong experience administering Microsoft Intune including Autopilot, endpoint security, device compliance, application deployment, and mobile device management;

Hands‑on experience with Microsoft Purview, eDiscovery, retention management, information protection, sensitivity labels, and compliance auditing;

Experience administering Microsoft Defender security platforms, Microsoft Sentinel, SIEM integrations, MDR/XDR technologies, and modern cybersecurity operations;

Strong understanding of Zero Trust architecture, identity governance, cloud security best practices, and modern endpoint management methodologies;

Working knowledge of Windows Server administration, Active Directory, virtualization platforms, PowerShell scripting, backup administration, and hybrid cloud infrastructure;

Experience leveraging automation, scripting, AI tools, and cloud management platforms to improve operational efficiency and administrative workflows;

Strong analytical and troubleshooting skills with the ability to independently diagnose and resolve complex cloud, identity, compliance, and infrastructure‑related issues;

A proactive mindset with a commitment to operational excellence, cybersecurity best practices, continuous improvement, and long‑term problem resolution;

Positive can‑do attitude that is willing to do what it takes to support the organization including other duties as required;

Be an active member of the helpdesk team and take ownership of assigned tickets and tasks;

Exceptional verbal and written communication skills with the ability to explain technical concepts clearly to both technical and non‑technical stakeholders;

Ability to manage multiple priorities, enterprise technology projects, and operational responsibilities in a fast‑paced environment;

Ability to lift and move computer and server equipment as needed;

Occasional after‑hours work may be required for system maintenance, tenant updates, security response, patching windows, or rotating on‑call support.

WHAT WE HAVE TO OFFER

Opportunities for professional development and growth within the company.

Competitive salary commensurate with experience.

Dynamic and collaborative work environment with a focus on work‑life balance.

Oshawa Power embraces and celebrates our collective diversity. We are committed to fostering an inclusive, diverse and equitable workplace built on respect, support and collaboration. Oshawa Power is an equal opportunity employer. We value an inclusive and supportive workplace which truly reflects the diversity of the communities we serve. We welcome all individuals to apply and do not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, disability, age, Indigenous/Métis status, or other legally protected status.

In accordance with the Ontario Human Rights Code and Accessibility for Ontarians with Disabilities Act, 2005, accommodation is available upon request at any point during the recruitment process. If you require accommodation please email us at careers@oshawapower.ca and we will work to meet your needs.

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