SYSTEM ADMINISTRATOR

M&S Consulting

$95K — $115K *
Aerospace & Defense
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Active Top Secret (TS) clearance and ability to obtain SCI required.
  • Minimum 5 years of System Administration experience.
  • Proficiency in configuring air-gapped networks without internet access.
  • Knowledge of network appliances, switches, routers, and firewalls.
  • Experience with scripting on Linux and managing startup scripts.
  • Understanding of RAID and redundancy techniques.

Responsibilities

  • Maintain and administer networks, including hardware and software.
  • Configure stand-alone development and integration networks.
  • Install and configure network services like DNS and DHCP.
  • Diagnose and resolve hardware and system issues.
  • Regularly apply OS and software security updates.
  • Conduct vulnerability assessments and security audits.
  • Document systems setups and manage logs.

Benefits

  • Job located in Washington, D.C. metro area.
  • Possibility of occasional domestic travel.
  • Full-time, direct hire with M&S Consulting, LLC.
  • Opportunity to work in a classified environment.
Full Job Description
SYSTEM ADMINISTRATOR

Full-Time | On-Site | Washington, D.C. Metro Area

Active Top Secret (TS) clearance required | Start date: September 28, 2026

POSITION SUMMARY

Position Title

System Administrator

Security Clearance

Must have Top Secret (TS) clearance and the ability to obtain SCI

Location

On-site - Washington, D.C. metro area (occasional domestic travel possible)

Employment Type

Full-time, direct hire with M&S Consulting, LLC

Start Date

September 28, 2026

WHAT YOU'LL DO
• Maintain and administer computer networks and related computing environments, including hardware, systems software, applications software, and all configurations.
• Configure and set up stand-alone development and integration networks with no internet access.
• Install hardware in racks and configure core network services such as DNS, NTP, DHCP, and related protocols.
• Install and configure web services and Java application servers.
• Perform system installation, configuration, and maintenance of server hardware, software, and stand-alone networks.
• Diagnose, troubleshoot, and resolve hardware, software, network, and system problems; replace defective components as needed.
• Regularly and promptly apply operating system, hardware, software, and security updates and patches.
• Conduct regular vulnerability assessments and security audits in coordination with program leadership and information-system security staff, and support required system documentation.
• Ensure network security and configuration and maintain compliance with applicable security regulations, requirements, and controls.
• Perform and maintain system backups; assist with contingency planning and disaster-recovery strategies.
• Configure and deploy virtual machines based on project needs.
• Serve as backup for configuration of user accounts, permissions, and security controls.
• Document system setup; maintain ticketing and wiki systems; manage network, maintenance, and repair logs; analyze system metrics.
• Recommend improvements to system and network configurations and identify related hardware or software requirements.
• Coordinate with stakeholders and communicate system changes clearly.

REQUIRED QUALIFICATIONS
• Clearance: Must have Top Secret (TS) clearance and the ability to obtain SCI.
• At least 5 years of experience in a System Administration role.
• Ability to configure and set up air-gapped networks with no internet access.
• Knowledge of managed network appliances, switches, routers, firewalls, and time code systems.
• Ability to manage startup scripts and other automated systems within the Linux operating system platform.
• Experience writing shell scripts and modifying existing shell scripts.
• Understanding of RAID and other redundancy techniques.
• Must excel in a collaborative, team environment.

PREFERRED QUALIFICATIONS
• Experience administering both Linux and Windows servers in a classified or stand-alone environment.
• Familiarity with STIG compliance, vulnerability scanning tools (e.g., Nessus), and system authorization (ATO) processes.
• Hands-on experience with enterprise network hardware (e.g., Cisco, Juniper) and virtualization platforms (e.g., VMware, Proxmox, KVM).
• Experience with web/application server stacks (Apache, Nginx, Tomcat, or similar).
• Relevant certifications such as Security+, RHCSA/RHCE, CCNA, or Linux+.
• Prior experience in a cleared environment.

HOW TO APPLY

Send your résumé to [email protected] with the subject line "System Administrator - DC." Please indicate your current clearance level and investigation date. Qualified candidates will be contacted promptly.

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