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Core One

National security and intelligence services

Lead Systems Administrator

System AdministrationConfirmed live in the last 24 hours
Full-timeSterling, VA, USA$100k - $120kIn-person

About the Job

Requirements

  • An equivalent combination of education and 6+ years of relevant experience will be considered in lieu of a degree.
  • 4-5 years of progressive experience in information technology administration, infrastructure management, cybersecurity operations, or related functions, including experience leading projects, initiatives, or personnel.
  • Demonstrated experience managing technology initiatives, coordinating cross-functional stakeholders, and driving projects from planning through implementation.
  • Familiarity with Python and PowerShell as system administration tools, with the ability to describe specific processes automated using these tools.
  • Experience managing or coordinating third-party managed service providers, consultants, or technology vendors.
  • Experience supporting NIST 800-171, CMMC, DFARS 252.204-7012, or other government cybersecurity compliance frameworks.
  • Intermediate-to-advanced knowledge of Windows environments, Office 365 administration, DNS, and Exchange Online.
  • Hands-on experience with Active Directory, Group Policy, MDM solutions, and SaaS provisioning.
  • Strong troubleshooting and analytical skills, including remote support capabilities.
  • Experience supporting and maintaining secure networks and working in DoD-compliant environments.
  • Ability to obtain and maintain at least a Secret security clearance.

Responsibilities

  • Independently manage routine IT operations, technology implementations, vendor relationships, user support activities, and cybersecurity compliance requirements.
  • Escalate matters involving significant operational disruption, cybersecurity incidents, substantial financial impact, legal exposure, or other material business risks.
  • Identify, evaluate, and implement technology solutions that improve operational efficiency, automate business processes, and support corporate growth objectives.
  • Develop, maintain, and continuously improve IT policies, procedures, standards, and documentation to support operational consistency, cybersecurity compliance, and organizational growth.
  • Develop, maintain, and execute the Company's IT strategy and technology roadmap, prioritizing initiatives that improve security, scalability, operational efficiency, and business performance.
  • Own the management and performance of third-party IT service providers, including service delivery oversight, escalation management, contract performance, and continuous improvement initiatives.
  • Lead the Company's cybersecurity and information assurance activities in coordination with the Facility Security Officer and external service providers, including vulnerability management, incident response readiness, system hardening, access control governance, and compliance activities.
  • Establish departmental priorities, allocate resources, and manage workload distribution to ensure effective delivery of IT services and strategic initiatives.
  • Lead, mentor, and develop IT personnel, including workload management, quality assurance, performance feedback, professional development, and delegation of responsibilities.

Desired Qualifications

  • Active Secret clearance.
  • Bachelor's degree in Information Technology, Computer Science, or a related field.
  • CompTIA A+ certification and CompTIA Network+ certification.
  • Experience administering Microsoft Intune.
  • Experience in a mid- to large-sized government contracting environment.
  • Familiarity with eDiscovery processes and tooling.

About the Company

Core One

National security and intelligence services

Core One provides intelligence, security and mission-support services to United States government customers. Its capabilities include intelligence analysis, operations support, training, language services, technology and other specialized work for defense and national security environments. The company assembles cleared professionals and program teams around agency requirements, often operating alongside government personnel. Core One is best understood as a federal contractor supporting sensitive missions rather than a consumer technology company or a similarly named commercial business. Its workforce combines specialist delivery, customer support and business operations.

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