Systems Administrator II; Microsoft 365 GCC & GCC

Systems Administrator II

Systems Application & Technologies, Inc. (SA-TECH) is a progressive and well-established Department of Defense (DoD) contractor specializing in range operations and maintenance (O&M); weapons testing; facilities management; aerial, ground and seaborne targets O&M technical, logistics and other engineering support; systems integration; electronics and communications maintenance services; and a growing cybersecurity business. We are highly focused and, among other efforts, currently operate a dozen active test and/or training ranges for the Army, Air Force and Navy.

Our 36-year heritage is founded on supporting complex and diverse DoD programs and we've developed a standout reputation for providing the highest quality services, superior workmanship and cost-effective results while achieving complete customer satisfaction.

As a U.S. defense contractor providing operations & maintenance, engineering, IT, and logistics services to DoD customers, we operate a modern, cloud-first Microsoft environment built on Microsoft 365 GCC and GCC High, backed by an established, well-documented cybersecurity program aligned to NIST SP 800-171 and CMMC Level 2.

We are currently looking to hire a Systems Administrator II to serve as the hands-on operational administrator of our two Microsoft government cloud tenants: an enterprise Microsoft 365 GCC tenant supporting corporate operations, and a Microsoft 365 GCC High enclave where Controlled Unclassified Information (CUI) is processed under NIST SP 800-171 and DFARS requirements. This is a full-time, on-site position at SA-TECH's Oxnard, CA Operations office.

This Level II role reports directly to the Director of IT. You enter as the Tier 2 technical escalation point, with an expected progression to Tier 3 within your first 12-18 months while you master the environment, including mentoring junior IT staff. You will execute administrative work under a mature governance model: changes go through change control, privileged access is just-in-time and audited, and the work you do is captured as assessment-ready evidence.

If you take pride in doing systems administration the right way — documented, least-privilege, repeatable — you will recognize this environment as one built for you.

What you'll do (other duties may be added as needed):

• Microsoft 365 tenant administration (GCC and GCC High)
  • Administer core workloads across both tenants — Entra , Exchange Online, SharePoint Online, One Drive, and Teams — including user and group lifecycle, licensing, and tenant configuration.
  • Maintain the separation between the enterprise GCC tenant and the GCC High CUI enclave, following SA-TECH's adopted boundary model and data-handling rules.
  • Support information-protection configurations (sensitivity labeling, DLP, sharing restrictions) in coordination with the Director of IT and the security operations function.
• Identity, access, and privileged administration
  • Operate a just-in-time, least-privilege administrative model with modern, phishing-resistant authentication — privileged work is time-bound, justified, and audited.
  • Administer identity and access management across both tenants: authentication policy, conditional access, and the credential lifecycle for users and administrators.
  • Manage service and special-purpose accounts according to documented configuration baselines and procedures.
  • Perform account provisioning, deprovisioning, and access changes tied to personnel actions, and support recurring account reconciliation reviews.
• Endpoint and device management
  • Administer Microsoft Intune for company devices — enrollment, configuration baselines, update regimens, and device lifecycle workflows across desktop and mobile platforms.
  • Follow SA-TECH's dedicated administrative workstation practices for privileged work, and help maintain the supporting configuration baselines.
  • Coordinate with the security operations function on endpoint protection; monitoring and independent review remain separated from this role by design.
• Automation, evidence, and operational discipline
  • Script and automate administrative work with Power Shell and Microsoft Graph, including against government…