Linux Systems Administrator

General information

Requisition #

R70812

Locations

USA-TX-San Antonio

Posting Date

09/17/2026

Security Clearance Required

TS/SCI w/ Poly

Remote Type

Onsite

Time Type

Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer-oriented Linux Systems Administrator to join our team in San Antonio, TX.

The Linux Orchestration Services (LOS) team which is the standard of excellence for all things Linux within the organization. The selected candidate will play a critical role in overseeing the design, implementation, and maintenance of the organization's cloud-compute infrastructure. The ideal candidate will have a strong background in the Linux Operating System and automation technologies.

Responsibilities include, but are not limited to:

• Analyze problems to determine technical solutions.
• Maintain current knowledge on new and existing products, technologies, and/or architecture.
• Be willing to learn and share knowledge with others and be able to work well with both internal and external constituents.
• Design and build the information technology framework or environment.
• Guide information technology projects to produce results that comply with established project requirements and IT architecture.

Minimum Qualifications:

• Bachelor's degree in a technical discipline with 10 years' experience as a Systems Administrator (SA) OR 5 years of additional SA experience may be substituted for a bachelor's degree.
• In depth experience with Linux (Red Hat Linux (RHEL) 8, 9, & 10; Amazon Linux; Rocky, etc.)
• Experience with Ansible & must possess strong knowledge of a wide range of cloud services / cloud-compute technologies such as AWS/Lambda functions.
• STE/STN solutions, Networking protocols/equipment, STIG application.
• IAT II certification (DoD 8140 required upon start of employment. Acceptable certifications include: CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/SSCP)
• Design/develop/integrate hardware and/or software components into new and existing systems and perform maintenance on the development system infrastructure.
• Participate in troubleshooting efforts

Preferred Qualifications:

• Experience with Ansible Automation Platform (AAP), Red Hat Satellite and Red Hat Image Builder.
• Red Hat Certified Engineer (RHCE) Certificate.
• Microsoft Azure products, VMWare (VSphere), OpenStack
• Experience/Knowledge of Virtual Desktop deployment and configuration automation.
• Knowledge in writing, configuring, and deploying Ansible Playbooks.
• Strong knowledge in writing and implementing other scripting languages like Python and Bash Scripting.
• Experience in managing and arranging JIRA projects, backlogs, sprints.
• Experience using Git commands (GitLab/GitHub) to manage/push/pull projects and implement file version controls.
• Creative, organized, and results driven, with the ability to condense and synthesize information quickly, working several efforts in tandem.
• Excellent verbal and written communication skills.

Clearance Requirements:

• Must have a current/active Top Secret/SCI with Polygraph

Physical Requirements:

• The person in this position must be able to remain in a stationary position 50% of the time.
• Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.

If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.