Systems Administrator with Security Clearance

Position : M365 Administrator

Location : Chicago, IL (Onsite)

Client : DoE (Department of Energy)

Must be an US Citizen ESSENTIAL FUNCTIONS

The Senior M365 Administrator provides leadership in the design, deployment, administration, and sustainment of the Microsoft 365 environment supporting the Department of Energy Office of Science. This role encompasses management of Exchange Online, Teams (including voice services), SharePoint Online, OneDrive, and Azure Active Directory (Entra ID). The Senior M365 Administrator ensures the secure, compliant, and efficient operation of all M365 services, aligned with DOE standards, federal policies, and cybersecurity requirements. This position is on-site at either DOE Headquarters in Chicago IL, supporting mission-critical operations and driving continuous improvement across the M365 platform. Operations Support and Maintenance

The Senior M365 Administrator ensures the reliable, secure, and compliant operation of the Microsoft 365 environment supporting the DOE Office of Science. This individual plays a key role in monitoring, maintaining, and enhancing all M365 services, delivering expert-level support for daily operations, troubleshooting, security, compliance, and service improvements. The administrator works proactively to sustain service health and performance while collaborating with peers and leadership to align with federal policies and organizational goals.

• Administer and optimize Microsoft 365 services, including Exchange Online, Teams (with voice), SharePoint Online, OneDrive, and Azure AD / Entra ID.
• Manage and enforce Conditional Access policies, MFA, and identity protection in accordance with DOE cybersecurity policies.
• Oversee external sharing settings and guest account lifecycle management, including Azure AD B2B configurations.
• Maintain Exchange hybrid configuration and ensure proper mail flow, policy management, and routing.
• Configure and support calendar sharing, resource mailboxes, distribution groups, shared mailboxes, and dynamic groups.
• Provide Tier III support for M365-related incidents, coordinating with Tier I / II teams as necessary.
• Perform monthly server patching of Azure and on-premises infrastructure.
• Develop and maintain M365 governance, security, and compliance policies, including DLP, retention, and sensitivity labels.
• Conduct eDiscovery searches, content searches, and provide results in response to legal or compliance requests.
• Create, maintain, and deliver reports on M365 service health, usage, licensing, and compliance posture.
• Plan and implement M365 service updates, feature deployments, and lifecycle management activities.
• Automate administrative tasks using PowerShell and Microsoft Graph API.
• Collaborate with cybersecurity, networking, and operations teams to ensure secure integrations and compliance.
• Provide input on M365 roadmap planning and service improvement initiatives. KNOWLEDGE / SKILLS

The candidate should be proficient in the following areas :

Effective communication and interpersonal skills are critical to the success of the Senior M365 Administrator. This position requires not only deep technical expertise, but also the ability to clearly convey complex information, proactively engage with colleagues and leadership, and foster collaboration across teams. The administrator must demonstrate accountability, initiative, and professionalism in all interactions to ensure the reliable and secure delivery of M365 services within a complex federal environment.