System Administrator, Level I, II, III (AE26061551)

Gtscts; Maryland; On-site; USD 80,000 - 155,000; Full time

Benefits offered by this job

11 paid holidays

Five weeks PTO

401(k) employer match

Company-paid life insurance

Tuition reimbursement

Hybrid work options available where/if

Professional growth opportunities

Job summary

GTSC seeks System Administrators (Level I–III) to support the implementation, troubleshooting, and maintenance of IT systems. Location: Hanover, MD; all work is on-site, no hybrid or remote option.

Active Top Secret SCI with polygraph clearance is required. Levels I–III are determined by experience (~5, ~10, ~15 years). Requires a technical degree or equivalent experience, and Windows/UNIX/Linux admin skills.

Qualifications

• 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.

Responsibilities

• 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 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.

Skills

Windows OS

UNIX/Linux

Troubleshooting

System monitoring

Communication skills

Security practices

Education

Bachelor's degree in a technical discipline

Tools

VMware

ELK Stack

Tripwire

SELinux

Bash

PowerShell

Job description

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

• Salary $79,800-155,200 / year
• City Annapolis Junction
• State/Province Maryland
• Country United States

Job Description

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, PowerShell)
• 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.

We’re also committed to your growth throughongoing training, educational reimbursement, and opportunities toadvance your career. Whether you’re building new skills or takingthe next step, you’ll find the support you need to succeed here.

• 11 paid holidays to support work-life balance
• Five weeks of PTO to start, accrued throughout the year
• Avariety of medical, dental, and vision plans tofit your needs
• Company-paid life insurance and disability coverageoptions, including voluntary supplemental plans
• Generous 401(k) employer match for all employees, alongwith the potential for an additional discretionary employer contribution
• Flexible schedules designed to support both ouremployees and our clients
• Hybrid work options available for eligible roles
• Robust employee referral bonus program
• Investment in your growth through training and tuition reimbursement

We are consistently on the lookout fortalented IT professionals to join our growing company! If youare interested in a fulfilling career that utilizes yourprofessional skills and education at a company that values yourexpertise, helps you obtain and maintain a U.S. security clearance,and enables you to help strengthen the U.S. intelligencecommunity, explore the opportunities GTSC has available now!

GTSC-Talent Solutions is an Equal Opportunity Employer and does not discriminate on the basis of race or ethnicity, religion, sex, national origin, age, veteran disability or genetic information or any other reason prohibited by law in employment.