Linux System Administrator (TS/SCI FSP) | HPC & Mission Systems

System Administrator (Linux / HPC) | TS/SCI FSP
Maryland & Utah | 100% Onsite
Salary: $100,000 - $200,000+ (Based on Experience)
Active TS/SCI with Full Scope Polygraph Required
Support Critical National Security Missions

Sebenza is actively seeking talented System Administrators, Platform Engineers, Storage Engineers, and Infrastructure Engineers to join a highly technical team supporting some of the nation's most advanced computing and mission environments.

If you are passionate about Linux, thrive in complex infrastructure environments, and enjoy solving challenging technical problems, this is an opportunity to make a direct impact on critical national security programs while working alongside elite engineering teams.

We have immediate openings in Maryland and Utah for cleared professionals ranging from mid-level to senior-level expertise.

What You'll Do

As a member of the operations and engineering team, you will support highly available Linux-based environments responsible for mission-critical processing, storage, networking, and infrastructure services.

Responsibilities include:

Administering and maintaining Linux operating systems and applications
Monitoring system health, performance, and availability
Troubleshooting operating system, hardware, and application issues
Installing, configuring, and upgrading Linux platforms
Managing file systems, networking services, and infrastructure resources
Creating and maintaining Bash scripts and automation tools
Supporting system modernization and automation initiatives
Collaborating with engineering teams to resolve complex operational challenges
Documenting system configurations, procedures, and technical solutions
Participating in system upgrades, sustainment activities, and operational support
Required Qualifications
MUST HAVE

✅ Active TS/SCI Clearance

✅ Active Full Scope Polygraph (FSP)

✅ U.S. Citizenship

✅ Linux System Administration Experience

Experience with one or more of the following:

Red Hat Enterprise Linux (RHEL)
Rocky Linux
CentOS
Ubuntu
SUSE Linux Enterprise Server (SLES)

Strong experience in:

Linux installation and configuration
System administration
File system management
TCP/IP networking
OS troubleshooting
Application troubleshooting
Bash scripting
Software installation and compilation
Preferred Technical Experience

Candidates with expertise in the following areas are especially encouraged to apply:

High Performance Computing (HPC)
HPC Infrastructure
Distributed Computing Environments
Cluster Operations
Performance Optimization
Storage Technologies
Lustre File Systems
DDN Exascaler
Storage Fabrics
Enterprise Storage Performance Tuning
Networking
Cisco
Juniper
Arista
High-Speed Networking
InfiniBand
Slingshot
Automation & Monitoring
Ansible
Salt
Git
Grafana
Prometheus
Nagios
Slurm
Jira
Confluence
Emerging Technologies

Experience or interest in:

DAOS
Elastic Storage Nodes (ESN)
Weka Data Platform
High-Performance Storage Systems
Performance & Benchmarking Tools
IOR
FIO
iperf
lnet_selftest
What Makes You Successful

We are looking for professionals who:

Take ownership and initiative
Think critically and solve complex problems
Enjoy learning new technologies
Thrive in collaborative engineering environments
Possess exceptional troubleshooting skills
Are driven by mission success and operational excellence
Compensation & Benefits
Competitive Compensation
$100,000 - $200,000+ base salary
Compensation aligned to experience, clearance level, and technical expertise