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# Systems Administrator Senior

- **Company:** Modern Technology Solutions, Inc.
- **Location:** Colorado Springs, CO, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Backup Devices, Bash Shell, CompTIA Security+, Information Systems, Linux, Networking Hardware, Python (Programming Language), Network Configuration and Change Management, Network Administration, Role-Based Access Control, Red Hat Enterprise Linux, Ansible, Virtualization Technology, Wide Area Networks, Backup and Restore, Windows Desktop, YAML, Scripting, Computer Networking Systems, Computer Network Operations, Cyber Warfare
- **Published:** August 8, 2026
- **Apply:** https://us.experteer.com/career/view-jobs/systems-administrator-senior-colorado-springs-co-usa-58848547

## About the Role

you and LAN/WAN technologies * Support data backups and communication security (COMSEC) policy integration * Apply Risk Management Framework to network/information system environments * Operate in DoD policy context for system/network administration and IL4+ environments * Participate in and support DoD/USSF defensive cyber operations * Adapt to travel (~<10%) and Colorado Springs work location * Possibly collaborate across Space Systems Command initiatives Tasks * 10+ years of relevant experience with a Masters degree OR 18+ years with a Bachelor's degree OR 25+ years with an Associate's degree * Strong Linux/RHEL system administration * Windows desktop and server knowledge * RBAC and STIG policy management for RHEL * Proficient with Ansible and YAML * Working knowledge of Cisco networking, switching, and virtualization * Virtualization experience in user environments and network appliances * Knowledge of LAN/WAN technologies and data backup * COMSEC policy concepts and integration

 * Experience with IL4+ network environments and DoD policy * Risk Management Framework (RMF) application experience * Scripting in Bash and Python * Relevant DoD/Space Systems Command experience and Defensive Cyber Operations * 1+ Cyber/Sys Admin certification (Security+, Linux, Red Hat, AWS Cloud, CCNA or DoD 8140) * Colorado Springs location with limited remote work and travel requirements Key requirements *

## Description

Experteer Overview In this role you will support, design, and sustain secure internal and external networks for DoD/Space Systems contexts. You work closely with cross-functional teams to implement and manage systems, applications, and security configurations, with a strong focus on Linux/RHEL administration. You will help ensure compliant, high-availability environments and apply risk management practices in IL4+ networks. This is a mission-driven role offering hands-on technical challenge and opportunities to influence secure, scalable network operations. Compensation / Benefits * Maintain and monitor internal and external networks and related systems * Implement and manage security and network configurations across Linux/RHEL and Windows environments * Provide user support and technical guidance in a high-performance team * Manage RBAC and STIG policies for RHEL systems * Develop and use Ansible playbooks (YAML) for automation * Work with Cisco networking equipment, virtualization, and LAN/WAN technologies * Support data backups and communication security (COMSEC) policy integration * Apply Risk Management Framework to network/information system environments * Operate in DoD policy context for system/network administration and IL4+ environments * Participate in and support DoD/USSF defensive cyber operations * Adapt to travel (~<10%) and Colorado Springs work location * Possibly collaborate across Space Systems Command initiatives Tasks * 10+ years of relevant experience with a Masters degree OR 18+ years with a Bachelor's degree OR 25+ years with an Associate's degree * Strong Linux/RHEL system administration * Windows desktop and server knowledge * RBAC and STIG policy management for RHEL * Proficient with Ansible and YAML * Working knowledge of Cisco networking, switching, and virtualization * Virtualization experience in user environments and network appliances * Knowledge of LAN/WAN technologies and data backup * COMSEC policy concepts and integration * Experience with IL4+ network environments and DoD policy * Risk Management Framework (RMF) application experience * Scripting in Bash and Python * Relevant DoD/Space Systems Command experience and Defensive Cyber Operations * 1+ Cyber/Sys Admin certification (Security+, Linux, Red Hat, AWS Cloud, CCNA or DoD 8140) * Colorado Springs location with limited remote work and travel requirements Key requirements *


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