• Location: Herndon, Virginia
  • Type: Direct Hire
  • Job #2725

Company Overview:

Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government.  Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission.  Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation’s toughest and most secure problems.  If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don’t look any further than Cornerstone Defense.

IT & Security Admin
Are you new to the IT field and are looking for a company to help you grow your skills?  Have you been searching for jobs but each one says you need a clearance to apply?  Well, if you said yes to both of those questions, we have the opportunity for you.  We are currently looking to add an energetic individual to our IT and Security department.  Starting off in this role, you will be exposed to an enterprise Microsoft 365 environment.  You will help maintain our “managed services” environment in conjunction with our outside support team.  We will invest in your IT career and help you navigate through the system, starting off with obtaining you’re A+ Certification.  While you hone your IT skills in a hands-on environment, we will also process you for your DoD Government Clearance.  Once you are cleared, your position will transfer into a hybrid IT/Security role, where you will be exposed to the ever-expanding Personnel Security field.  Our investment in you will continue with helping you obtain your AFSO Certification, furthering your career.

Eligible candidates should have a basic understanding of Microsoft products, have a can-do attitude, and have the ability to obtain/maintain a DoD Government Clearance.  Below is a list of the technologies that you will be both exposed to, as well as trained on, once on board.

Job Description

  • Basic help desk resolution and service desk delivery.
  • Support users in Microsoft 365 environment.
    • Microsoft Suite Support (Outlook, Teams, Office, Power BI)
    • Microsoft OneDrive
  • Maintenance of Azure Active Directory environments including Policies.
  • Assists in the setup of newly hired Team Member equipment, including workstations, hardware, software, monitors, cell phones, tablets, etc.
  • Perform maintenance which includes but is not limited to installation of new software releases, system upgrades, and patches.
  • Maintains current and accurate inventory of IT assets & equipment.
  • Evaluates current and new resources and services for potential improvements.
  • Maintain Office Printers-Troubleshoot (paper jams, driver, order toner).
  • Maintain VOIP and update company directory as necessary.
  • Maintain and troubleshoot office video conferencing system (Polycom).
  • Ensures IT equipment is accessible, updated, and documented with current hardware and software.
  • Troubleshoots hardware, software, networks, and operating systems.
  • Supports and trains end users on hardware and software program functionality.
  • Work with 3rd Party vendors and ticketing system.
  • Datawatch-Assign, terminate access cards, answer calls regarding door props and resets.
  • On call after hours for emergencies- answering calls or emails for employee support.
  • Performs other IT related duties as assigned.
  • Assist the FSO in maintaining the compliance of security training requirements and act as the Assistant FSO (once clearance and certification has been completed).
    • Performs operations in government applications and databases such as DISS/NBIS, eQIP, SWFT and NISS.


  • Knowledge of Windows servers and current client operating systems (Windows 10 & 11 preferred).
  • Knowledge of M365/GCC Administration
  • Knowledge and ability to install and administer computer hardware, software, networking, and operating systems.
  • Knowledge of Firewalls.
  • Knowledge of Networking (wireless and wired).
  • Provides stellar customer service to internal and external stakeholders.
  • Excellent verbal and written communication skills.
  • Proactive and independent with the ability to take initiative.
  • Excellent time management skills with a proven ability to meet deadlines.
  • Minimum 1-2 years of experience.
  • Able to obtain and maintain IT Certifications as needed.
    • A+ Certification must be obtained within the first 90 days of your employment if not already obtained.
  • Able to obtain and maintain a TS clearance.
  • Able to complete DCSA FSO Training certification for non-possessing facility. (Completed within 6 months of start date).


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