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Linux System Administrator

2 months ago

Columbia, South Carolina, United States ManTech Full time

Secure Our Nation, Ignite Your Future

Become an integral part of a diverse team while working at a leading technology organization, where our employees come first. At ManTech International Corporation, you'll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer-oriented System Administrator to join our team.

Key Responsibilities:

  • Perform Linux system administration functions, including OS loading, patching, LDAP, DNS, DHCP, Samba, SSH, VNC, user/group management, and more.
  • Set up Linux servers and ensure seamless data sharing between them and other computers, often Windows-based.
  • Assess system vulnerabilities using tools like SecScan and Nessus, harden systems manually and through scripts, and perform system/application-level regression testing.
  • Implement and administer virus scanning applications to ensure a secure environment.
  • Utilize shell scripting (Bash, other) to enhance system administration, troubleshooting, and automation tasks.
  • Perform Windows system administration functions, including OS loading, patching, Active Directory, Remote Desktop, virus scanning applications, and policy implementation.
  • Set up Windows servers (Server 2019, Server 2022, etc.) and clients (e.g., Win7, Win8, Win10, Win11) and ensure data sharing between them and Linux servers.
  • Assess system vulnerabilities, harden systems, and perform system/application-level regression testing.

Basic Qualifications:

  • Ten (10) years of experience as a System Administrator in programs and contracts of similar scope, type, and complexity is required.
  • Bachelor's degree in a technical discipline from an accredited college or university is required. Five (5) years of additional SA experience may be substituted for a bachelor's degree.

Preferred Qualifications:

  • Meet IAT Level II – e.g., Security+ (Sec+) or be able to secure Sec+ certification or higher.
  • Basic understanding of the Risk Management Framework (RMF) requirements and processes.
  • Basic knowledge of router and switch configuration, necessary for configuration and/or system hardening and compliance scanning requirements.
  • Elastic (ELK) Stack configuration and user experience.
  • Experience using PowerShell scripting to enhance system administration, troubleshooting, and automation tasks.
  • Experience installing, integrating, and troubleshooting GOTS/COTS Software/Applications on Windows and Linux servers.

Security Clearance Requirements:

  • Current and active TS/SCI with Polygraph.

ManTech International Corporation is an equal opportunity employer and does not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.