Captivation
Systems Administrator 3 (On-Call) - Linux/Bash/Python/STE/STN/Docker/Kubernetes
$130K–$270K
Annapolis Junction, MD +1 · Full-time · Posted Oct 5, 2026
- Location
- Annapolis Junction, MD
ID - Experience
- 15 years required; five additional years of Systems Administration experience may substitute for a bachelor’s degree.
- Education
- Bachelor’s degree in a technical discipline from an accredited college or university; five additional years of Systems Administration experience may substitute.
About the job
Supports and sustains a large-scale Linux system through software installation, daily operations, monitoring, troubleshooting, security maintenance, network configuration, and reliability and performance improvements.
What you'll do
- Install, configure, monitor, and troubleshoot system components and COTS/GOTS/FOSS software in a large-scale Linux environment.
- Maintain system security, configure network components, and implement operating system enhancements.
- Support Linux clusters, virtualization, and systems management tools.
What they ask for
- Current Top Secret/SCI U.S. Government clearance with favorable Polygraph; U.S. citizenship required.
- 15 years of Systems Administrator experience on programs and contracts of similar scope, type, and complexity.
- Bachelor’s degree in a technical discipline from an accredited college or university, or five additional years of Systems Administration experience.
- Security+ Certification; experience with Linux CLI, Bash/Python scripting, and large-scale Linux system administration.
Nice to have
- Experience with Kubernetes; distributed file systems such as Weka, CEPH, GPFS, or HDFS.
- Experience with Atlassian tools such as Jira and Confluence.
Pay
USD 130,000 - USD 270,000 base salary
Tools
Linux, Bash, Python, Red Hat Satellite, Splunk, VMware ESXi, SaltStack, Ansible
Model-written summary · the original posting is authoritative