• Location: Annapolis Junction, Maryland
  • Type: Contract
  • Job #3236

Title: Systems Administrator II
Location: Annapolis Junction, MD
*Clearance: *Active TS/SCI w/ Polygraph needed to apply *
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.


Tier II professionals in this category support foundational aspects of the enterprise's HPC infrastructure and user-facing services utilizing Linux desktop operating systems. They conduct routine system maintenance checks, perform hardware and software installations, and assist in troubleshooting software (including applications), hardware technical issues (including peripherals) utilizing ServiceNow ticketing system. They are also responsible for documenting standard operating procedures and assisting higher-level administrators in larger projects.
Exposure to CentOS/RHEL, VMware  Horizon, secure DNS. Candidates should be familiar with systems monitoring tools such as Nagios and Grafana, data processing using Splunk, and basic command-line scripting. Knowledge of Virtual Desktop Infrastructure (VDI) principles is a plus.
Additional Responsibilities & Skills:
• Conduct regular security patching, assessments and scans on Linux operating systems using tools like Tenable Nessus, identifying potential vulnerabilities and mitigating those vulnerabilities.
• Manage user home directories, accounts and groups efficiently using Active Directory and Centrify, ensuring proper access controls and adherence to security policies.
• Utilize LDAP for more advanced directory service operations.
• Engage actively with network team, storage team, server team, and security operations team; facilitating information flow and integrated problem-solving.
• Implement standard security mitigation techniques for identified vulnerabilities, ensuring system integrity.
Years of Experience:
• 1-5 years experience in help desk, account management and desktop system administration or a related area.
Degree Requirements:
• Associate Degree in Computer Science, Information Technology, or a related field.
o Degree can be substituted with additional 1 year of relevant experience.
• Certification Requirements:
• CompTIA Security+ CE (required)
Attach a resume file. Accepted file types are DOC, DOCX, PDF, HTML, and TXT.

We are uploading your application. It may take a few moments to read your resume. Please wait!