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CIS Secure

Secure communications and cybersecurity for DoD

Linux System Administrator

System AdministrationConfirmed live in the last 24 hours
Full-timeDayton, OH, USA

About the Job

Requirements

  • A high school diploma or equivalent is required.
  • Possess an active IAT Level II certification, such as CompTIA Security+ or equivalent.
  • Have a minimum of eight years of Linux system administration experience.
  • Have a minimum of eight years of experience installing and maintaining Linux security and update patches.
  • Have experience with programming or scripting languages such as Python, C, C++, C#, Bash, Perl, Go, and Java.
  • Hold an active Top Secret/SCI clearance upon application for initial consideration; clearance upgrades, reactivation, or sponsorship are not available.

Responsibilities

  • Provide Linux system administration and maintain Linux server builds.
  • Use ticketing systems such as Atlassian Jira, Atlassian Jira Service Desk, Atlassian Confluence, ServiceNow, and Microsoft Service Manager.
  • Administer BIND DNS, FTP, and NTP as required.
  • Configure directory service parameters.
  • Maintain and update custom authentication services, including SAMBA and VAS.
  • Manage group shares and home directories.
  • Monitor system usage and perform system tuning.
  • Coordinate with stakeholders to analyze requirements and determine hardware and software needs for automated solutions.
  • Implement system enhancements to improve performance and reliability through installation, patching, monitoring, and configuration management.
  • Ensure data integrity through backup and recovery services, proactive storage-device management, and regular updates of virus and malware protection.
  • Manage user and computer accounts, including file permissions and security access lists.
  • Test new releases to minimize user impact and ensure compatibility.
  • Develop and document technical processes and procedures as necessary.
  • Recommend hardware, software, and system component purchases.
  • Engage vendors to troubleshoot issues, evaluate products and services, and implement suggestions.
  • Follow Information Systems security guidelines, applying DoD STIGs and vulnerability mitigation according to RMF and DoD standards.
  • Maintain security audit and logging information for classified networked and standalone computers as directed.
  • Prepare security documentation for Computer Security input and report project status as required.

Desired Qualifications

  • Linux+, LPIC, LFCS, or RHCSA certification is highly desired. If the candidate does not currently hold a Linux certification, they must acquire one of the listed certifications within 30 days of an accepted offer.

About the Company

CIS Secure

Secure communications and cybersecurity for DoD

CIS Secure provides secure communications and cybersecurity solutions for intelligence and defense clients. Its offerings cover a broad portfolio of deployable, mission-critical products and services designed to meet stringent requirements. The company delivers end-to-end support—from design and integration to implementation and ongoing support—by combining advanced technologies with tailored secure platforms. CIS Secure differentiates itself through a deep understanding of mission needs and disciplined program management, ensuring performance and reliability in demanding environments. The goal is to enable mission success by delivering customized, secure communications and cybersecurity solutions that perform in the field.

Company size
51-200
Company stage
Not listed
Total funding
Not listed
Headquarters
VA, United States
Founded
1992

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