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# Systems Administrator - Senior

- **Company:** Caelum Research Corporation
- **Location:** Aberdeen, MD, United States
- **Experience:** Expert
- **Salary:** $90,000.0 - $140,000.0
- **Contract:** Permanent contract
- **Skills:** ASP.NET, Microsoft Windows, Server Applications, Bash Shell, Configuration Management, Information Systems, Computer Forensics, System Configuration, Linux, RAID, Perl (Programming Language), Monitoring of Systems, Web Servers, Identity and Access Management, Python (Programming Language), Microsoft Servers, Windows Servers, Networking Basics, Performance Tuning, Windows PowerShell, Ruby, Server Virtualization, Software Engineering, Curam Configuration Tools, Scripting, Load Balancing, Build Management, Kubernetes, Information Technology, Performance Monitor, Web Technologies, Vmware
- **Published:** June 19, 2026
- **Apply:** https://www.clearancejobs.com/jobs/8986027/systems-administrator-senior

## About the Role

* Bachelor's Degree and 10 years' experience; experience which may include education/specialized training/certifications may be substituted for education.
 * Experience in VMWare systems administration including troubleshooting and monitoring
 * Experience in resolving complex issues associated with configuration management. resource sharing and basic networking troubleshooting and problem identification.
 * Experience in resolving security issues, identity management, records retention, and adhering to destruction policies
 * Experience using and writing operating system commands and scripts, and scripting languages, including one or more of Bash, Powershell, Python, Ruby, and/or Perl.
 * Experience with performance tuning, capacity planning and bottleneck resolution, administration of Microsoft Servers, building and maintaining high-availability, clustered and scalable systems, advanced web technologies such as ASP.NET, pipeline, load balancing, etc.; managing production environments using automated install, automated build and deployment, automated configuration management, enterprise monitoring systems, server virtualization, load balancing, web servers, and application servers
 * Experience managing or working with Windows Server and Linux Operating systems and associated configuration tools is desirable.
 * Experience and/or working knowledge of Kubernetes is highly desirable.
 * Relevant education or certification must be in an IT discipline related to the assigned program area (e.g Computer Science, Information Systems, Computer or Software Engineering, Management Information Systems, Computer Forensics/Security, etc.).
 * Must possess current Security+ (or equivalent DOD Directive 8570.1 IAT II)

## Description

* Performs Windows Server systems administration including troubleshooting, monitoring, and support;
 * Windows event and performance monitoring; and management of hosted systems software platforms.
 * Resolves basic and intermediate issues associated with system configuration management, resource sharing and basic networking troubleshooting and problem identification.
 * Resolves security issues including identity management, records retention, and implements destruction policies.
 * Uses and write operating system commands and scripts, manages disk configurations, maintains hardware and software RAID 1-N, performs migration, backup and recovery using scripting languages, such as Bash, PowerShell, Python, Ruby, and/or Perl.
 * May support performance tuning, capacity planning and bottleneck resolution, administration of Microsoft Servers, building and maintaining high-availability, clustered and scalable systems, and load balancing.
 * Manages production environments using automated install, automated build and deployment, automated configuration management, enterprise monitoring systems, server virtualization, load balancing, web servers, and application servers.


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