Top Secret Cleared IT Desktop Administrator

Top Secret Cleared IT Desktop Administrator

McLean, VA

C3 Integrated Solutions is a market leader in helping the Defense Industrial Base (DIB) navigate cybersecurity and compliance requirements, including CMMC, NIST 800‑171, and GCC High. Backed by private equity and having recently merged with Ingalls Information Security, C3 is in an exciting period of rapid growth and innovation. We partner with organizations across the defense supply chain to secure their operations and position them for long‑term success in a highly regulated environment.

With the final CMMC rule now in effect and demand surging across the industry, this is a pivotal moment to join our team. You’ll be at the center of scaling a marketing engine that not only drives growth but also strengthens national security by empowering contractors to meet critical compliance standards.

The Top Secret Cleared IT Desktop Administrator serves as a dedicated, on‑site resource for a specific client, embedded within their IT team while remaining under C3’s oversight. This role provides hands‑on support across systems and services including Microsoft 365, Azure, Windows OS, and end‑user hardware. Responsibilities include daily IT operations, user support, compliance with ISO standards, system documentation, and assisting with migrations, upgrades, and incident response—all while aligning with C3’s standards and processes.

• Assist with the administration and maintenance of a multi‑site environment that includes Microsoft Office 365, Microsoft Azure, Windows operating systems, hardware, software, peripherals, cloud and network‑based services, telecommunications, etc.
• Ensure all work is done in compliance with the ISO 20000 and 27000 management systems.
• Create and maintain IT procedural and system documentation.
• Assist with the planning, migration and integration of critical business systems and applications.
• Support and assist in all areas of laptop and mobile device support;
  Microsoft O365 account maintenance; build and load Windows operating systems, remove or update user account information, reset passwords, etc.
• Responding to user requests, problems and concerns. Implement effective solutions and provide regular updates and feedback to users and managers regarding the status of efforts to resolve more complex problems.
• Creation, updating and closure of IT related helpdesk tickets.
• Create system documentation and assist in documenting changes to new and existing system processes and procedures.
• Provide support with the creation and maintenance of Azure AD groups, Shared Mailboxes.
• Respond to after‑hours network and system outages and other emergencies.
• Assist with hardware/software upgrades, releases and inventory management.
• Perform special projects as assigned.

• Minimum 4 years supporting corporate IT environments within a structured setting that includes formal processes, change management, and ticketing systems.
• 4+ years as a System Administrator, with demonstrated responsibility for:
  • User account creation and management in Azure
  • Installation and configuration of workstation operating systems and application software
  • Active Directory and Dynamic Groups administration
  • Utilities management and general systems operations
• Experience with Microsoft Azure GCC High and Office 365 is required.
• SharePoint experience is a plus.
• Hands‑on experience with Dell laptops, including hardware support, imaging, staging, deployment, and managing Dell maintenance/support tickets.
• Microsoft Intune administration and management experience.
• Microsoft 365 Certified:
  Endpoint Administrator or equivalent technical certification.
• Familiarity with ISO 9000, ISO 20000, and ISO 27000 standards.
• Active Top Secret Clearance required.

• To be a part of one of the fastest‑growing companies in America, and a talented team to back you up.
• An awesome culture, backed up by winning several Best Places to Work awards.
• Four Weeks of Paid Time Off (vacation & sick leave)
• Four weeks of Paid Maternity and Paternity leave
• Two days of Paid Volunteer Time
• 401(k) with 4% Company Match
• Company Bonus Structure
• Tuition Reimbursement
• Employer‑sponsored…