Mid-level Linux Systems Administrator / Active Top Secret

Peraton•Quantico, VA

20h

About The Position

Peraton is hiring a Mid-level Systems Administrator for its Federal Strategic Cyber program in Washington, DC. The role focuses on assessing and analyzing systems, software, and embedded computers to identify flaws, safety hazards, and opportunities for improvement. The administrator reviews system design and functionality, verifies that software requirements are implemented correctly, and develops or evaluates requirements, designs, and test procedures to confirm systems perform as expected. The position documents identified anomalies and presents findings to peers, customers, and management. The position requires production Linux administration experience, particularly with Ubuntu, and troubleshooting across operating systems and virtualized or cloud environments. It also involves monitoring system health and performance, applying security fundamentals, and documenting infrastructure and operational procedures. The candidate must be a U.S. citizen with an active Top Secret clearance, SCI eligibility, and the ability to obtain a polygraph.

Requirements

Bachelor's degree and at least 2 years of experience; an additional 4 years of experience may be substituted for the bachelor's degree.
At least 2 years of experience administering and supporting Linux systems in production environments.
Strong hands-on experience with Ubuntu Linux.
Solid understanding of Linux system administration concepts.
Proficiency with the Linux command line and common shell utilities.
Experience troubleshooting complex infrastructure issues across operating systems.
Working knowledge of TCP/IP networking, DNS, DHCP, HTTP/HTTPS, SSH, routing, firewalls, and common network troubleshooting tools.
Experience administering and troubleshooting servers in virtualized or cloud environments.
Experience with monitoring, logging, alerting, and diagnosing system health and performance issues.
Understanding of system security fundamentals, including patch management, access controls, SSH security, and vulnerability remediation.
Ability to clearly document infrastructure, configurations, troubleshooting procedures, and operational processes.
U.S. citizenship.
Active Top Secret security clearance, SCI eligibility, and ability to obtain a polygraph.

Nice To Haves

Experience with Docker and containerized applications.
Experience with Ansible or other configuration-management or automation tools.
Experience writing Bash or other shell scripts for system administration and automation.
Experience with infrastructure-as-code tools such as Terraform.
Familiarity with CI/CD concepts and tools.
Experience with cloud platforms such as AWS.
Experience administering web servers, reverse proxies, or application infrastructure such as Nginx.
Familiarity with databases and troubleshooting application/database connectivity.
Familiarity with centralized logging and monitoring platforms such as Grafana and ELK.
Experience with scripting or automation using Python.
Exposure to high-availability, load balancing, and scalable infrastructure concepts.

Responsibilities

Assess systems and review software to identify flaws and recommend improvements.
Examine, analyze, and test code.
Potentially work with system simulators and statistical analysis.
Review systems, platforms, applications, and interfaces to understand their design and functionality.
Identify hardware and software components involved in safety- and mission-critical functionality.
Evaluate embedded software to verify requirements are correctly implemented in embedded-computer design and code and that the code contains no embedded safety hazards.
Identify requirements, designs, and test procedures to ensure systems perform as expected.
Document analysis and identified anomalies.
Present findings to peers, customers, and management.
Administer and support Linux systems in production environments.
Troubleshoot infrastructure issues across operating systems and administer and troubleshoot servers in virtualized or cloud environments.
Monitor, log, and diagnose system health and performance issues.
Apply system security practices, including patch management, access controls, SSH security, and vulnerability remediation.
Document infrastructure, configurations, troubleshooting procedures, and operational processes.