System Administrator, Level I, II, III; AE

Annapolis Junction, United States | Posted on 06/10/2026

• Salary $79, / year
• City Annapolis Junction
• State/Province Maryland
• Country United States

GTSC seeks System Administrators (Level I, II, or III).

Location: Hanover, MD

All work is on-site. This is not a hybrid or remote position.

~~~~~ These positions pending contract award ~~~

Mission:

GTSC seeking System Administrators at multiple experience levels (Level I–III) to support the implementation, troubleshooting, and maintenance of IT systems and infrastructure. Candidates will be responsible for managing system operations, supporting users, and ensuring the reliability, performance, and security of enterprise environments. Level placement will be determined based on experience, technical expertise, and demonstrated capabilities.

Clearance: Active Top Secret SCI with polygraph.

Requirements:

Experience supporting IT systems in enterprise environments (level dependent):

Level I: ~5 years or equivalent experience/training

Level II: ~10 years

Level III: ~15 years

• Requires bachelor's degree in a technical discipline (or equivalent experience)
• Experience with Windows and/or UNIX/Linux system administration
• Familiarity with system monitoring, troubleshooting, and performance tuning
• Strong problem-solving and communication skills

Preferred Qualifications:

• Experience with tools such as VMware, ELK Stack, Tripwire, or SELinux
• Experience with virtualization, containers, and system security practices
• Knowledge of infrastructure automation or scripting (e.g., Bash, Power Shell)
• Experience in secure or regulated environments
• May require participation in on-call rotation or shift work
• Work performed in a team-oriented, mission-focused environment

Additional Information:

• Level will be determined based on candidate qualifications and experience
• Salary and responsibilities will align with the selected level

Key Responsibilities (All Levels):

• Provide support for implementation, troubleshooting, and maintenance of IT systems
• Manage daily operations of systems including servers, storage, and network devices
• Monitor system performance and ensure availability and reliability
• Perform system configuration, patching, and upgrades for Windows and/or UNIX/Linux environments
• Troubleshoot hardware, software, and network issues and provide timely resolution
• Support users in accessing and utilizing IT systems
• Document system configurations, processes, and issue resolutions
• Support escalation processes and communicate status to stakeholders
• Maintain system security and compliance with organizational standards

Additional Responsibilities by Level:

Level I (Entry/Intermediate):

• Provide Tier 1 and basic Tier 2 support for incident resolution
• Perform routine system maintenance and monitoring
• Follow established procedures and elevate complex issues

Level II (Mid-Level):

• Perform advanced troubleshooting and root cause analysis
• Handle escalated incidents and provide detailed technical feedback
• Optimize system performance and resource utilization
• Support capacity planning and system improvements

Level III (Senior):

• Analyze and resolve complex, multi-system issues
• Support system design, architecture, and integration efforts
• Provide technical leadership and guidance to junior staff
• Evaluate and implement system enhancements to improve reliability and performance
• Understand and manage system interdependencies across enterprise environments

Webelieve great work starts with supporting our people. From day one,you’ll have access to generous paid time off, comprehensive benefits,and a retirement plan designed to help you plan for the future. Weoffer flexible and hybrid work options where possible, along with acollaborative environment that values your time, contributions, and well-being.

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