Systems Administrator

MANTECH; San Antonio (TX); On-site; USD 120,000 - 180,000; Full time

Job summary

MANTECH in San Antonio, TX seeks a motivated Systems Administrator to support the LOS team and enterprise Linux infrastructure. The role emphasizes design, implementation, and maintenance of mission-critical cloud compute environments and automation workflows.

The candidate should have extensive SA experience, Linux proficiency, and hands-on scripting skills. DoD 8140 IAT Level II certification is required on start, with PXE/Kickstart automation for Linux and Windows.

Qualifications

• 7+ years of systems administration experience.
• Experience with multi-platform imaging.
• Linux administration experience.
• Proficiency in scripting for automation (Python, Bash, or PowerShell).
• DoD 8140 IAT Level II certification required at start.
• PXE and Kickstart automation across Linux and Windows.

Responsibilities

• Analyze technical challenges to implement solutions across enterprise environments.
• Design and optimize IT frameworks, cloud infrastructure, and core operating environments.
• Guide IT projects from conception to completion, ensuring policy conformance.
• Maintain knowledge of current and emerging cloud technologies and systems.
• Collaborate with engineering teams and leadership to drive mission success.
• Troubleshoot complex system issues and perform root-cause analysis.

Skills

Systems administration

Linux administration

Scripting: Python Bash PS

Automation & orchestration

DoD 8140 IAT Level II

PXE Kickstart automation

Agile Jira practices

Education

Bachelor's degree in technical discipline

10+ years SA experience or 5 extra years

Tools

Ansible Playbooks

Ansible Automation Platform

Red Hat Satellite

Red Hat Image Builder

AWS

Azure

VMware vSphere

OpenStack

Jira

Git

Job description

MANTECH seeks a motivated, career and customer-oriented Systems Administrator to join our team in San Antonio, TX. The Linux Systems Administrator will support the Linux Orchestration Services (LOS) team, serving as the standard of excellence for enterprise Linux solutions while overseeing the design, implementation, and maintenance of mission-critical cloud-compute infrastructure and automation workflows.

Responsibilities Include But Are Not Limited To

• Analyzing technical challenges to develop, implement, and maintain sound technical solutions across enterprise environments.
• Designing, building, and optimizing information technology frameworks, cloud-compute infrastructure, and core operating environments.
• Guiding IT projects from conception to completion to ensure full compliance with established project requirements and enterprise IT architecture.
• Maintaining in-depth technical knowledge of emerging and existing products, cloud technologies, and systems architectures.
• Collaborating closely with internal engineering teams, leadership, and external constituents to share knowledge and drive mission success.
• Troubleshooting complex system issues to resolve operational incidents and conducting thorough root cause analysis.

Minimum Qualifications

• 7+ years of relevant Systems Administration (SA) experience
• Experience with multi-platform imaging
• Linux administration experience
• Proficiency in systems automation and orchestration leveraging scripting capabilities in Python, Bash, or PowerShell.
• Current DoD 8140 IAT Level II certification (e.g., Security+ CE, CySA+, CCNA‑Security, GICSP, GSEC, CND, or SSCP) upon start of employment.
• PXE and Kickstart configurations experience to automate across Linux and Windows terminals

Preferred Qualifications

• Bachelor’s degree in a technical discipline with ten (10) years of Systems Administration experience, or five (5) additional years of SA experience in lieu of a degree.
• Demonstrated expertise writing, configuring, and deploying Ansible Playbooks, Ansible Automation Platform (AAP), Red Hat Satellite, and Red Hat Image Builder.
• Hands‑on experience with cloud and virtualization technologies including AWS (Lambda), Microsoft Azure, VMware (vSphere), and OpenStack.
• Familiarity with Agile practices utilizing JIRA for backlog and sprint management, combined with Git version control workflows (GitLab/GitHub).

Clearance Requirements

• Must possess an active Top Secret/SCI clearance 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 team members, operate standard office automation equipment, and engage in virtual communication.