Senior Systems Administrator
MantechUnited States
Posted May 18, 2026
137100 - 244100 USD
Full Time
About the Company
MANTECH is a trusted partner to the Department of Defense, delivering cutting-edge projects that make a real impact.
Job Description
Join MANTECH's CASTLE-NET Program team as a Senior Systems Administrator to provide innovative, customer-focused, and cost-effective integrated enterprise IT support services. This is a remote position that requires managing and maintaining IT infrastructure, planning and leading technology assignments, and delivering world-class IT services.
Requirements
- Bachelor's degree in Information Technology or related field
- 8+ years of progressively responsible experience in systems administration for Windows, Linux, or VMware environments
- Comprehensive knowledge of operating systems such as Windows Server, Red Hat, and CentOS, as well as virtualization technologies like VMware vSphere
- Proficiency in scripting languages including PowerShell, Bash, or Python, and experience with system monitoring and performance tuning
- Experience creating, maintaining, and communicating complex information technology documentation and system configurations
- Possession and maintenance of relevant certifications such as Microsoft Certified: Windows Server, RHCSA, RHCE, or VCP
- Must maintain a DoD 8140 IAT Level II certification to comply with mission security and baseline requirements
Benefits
- Health Insurance
- Life Insurance
- Paid Time Off
- Holiday Pay
- short-term and long-term Disability
- Retirement and Savings
- Learning and Development opportunities
- wellness programs