Senior Systems Administrator

Type of Requisition:

Pipeline

Clearance Level Must Currently Possess:

Top Secret

Clearance Level Must Be Able to Obtain:

Top Secret

Public Trust/Other Required:

None

Job Family:

IT Infrastructure and Operations

Job Qualifications:

Skills:

Disaster Recovery (DR), Information Technology (IT) Systems, System Backups

Certifications:

None

Experience:

10 + years of related experience

US Citizenship Required:

Yes

Job Description:

Senior Systems Administrator

Overview:

The Senior Systems Administrator supports the U.S. Army Information Systems Engineering Command (USAISEC), Communications Security Directorate (CSD), by providing comprehensive enterprise-level system, network, and workstation administration services across classified and unclassified environments. This role ensures the availability, security, continuity, and performance of all CSD-managed IT systems, user endpoints, network infrastructure, and supporting technologies.

Job Duties:

• Administer, update, and maintain physical and virtual Windows, Linux, UNIX, and Active Directory servers.
• Install, configure, and sustain system and application software, patches, and updates.
• Monitor system performance and resolve operational issues.
• Manage support tickets with vendors and Government partners and coordinate warranty actions.
• Provide daily end‑user technical support for workstations, peripherals, and communication devices.
• Deploy and maintain workstations and associated hardware.
• Create and manage user accounts across classified and unclassified networks.
• Troubleshoot hardware, software, and connectivity issues.
• Deliver user training on core operating systems and software tools.
• Issue outage notifications for planned and unplanned service events.
• Serve as Key Management Infrastructure (KMI) Client Platform Administrator.
• Configure and maintain LAN/WAN devices including routers, switches, encryptors, and firewalls.
• Monitor network uptime, traffic, and performance.
• Install, test, and maintain copper and fiber cabling, resolving physical and logical network issues.
• Document cabling, port assignments, and network configurations.
• Enforce cybersecurity policies in alignment with Army, DOW, and RMF requirements.
• Manage domains, permissions, privileged accounts, and access controls.
• Support RMF and ATO processes through system documentation and compliance artifacts.
• Run vulnerability scans, validate security controls, and support continuous monitoring.
• Respond to security incidents, malware events, and classified spillage.
• Isolate affected systems, preserve evidence, and support remediation activities.
• Execute and verify daily system backups.
• Transport classified backup media to off‑site secure facilities as required.
• Maintain and test contingency and disaster recovery plans.
• Prepare for outages, hardware failures, and service disruptions.
• Support long‑term IT planning and lifecycle replacement strategies.
• Evaluate and recommend emerging technologies.
• Participate in technical boards, working groups, and governance activities.
• Prepare and deliver technical briefings and analysis.
• Support system testing, including scenario‑based and configuration‑based evaluations.
• Maintain system documentation, SOPs, and troubleshooting guides.
• Ensure documentation supports rapid onboarding of new personnel.
• Improve tools, processes, and procedures as directed by leadership.

WHAT YOU’LL NEED TO SUCCEED
Bring your technology expertise and drive for innovation to GDIT. The Systems Administrator SME must have:
● Education: At least 2 Certifications within the following disciplines: Systems and network administration, Operating systems, Server Virtualization, Videoconferencing, Fiber optic cabling, Audio/visual systems, Network and systems management and control, Media access/digital interfaces, Voice over Internet Protocol (VoIP), and/or  System and/or network protocols

● Experience: 10+ years of related experience
● Must meet DoD 8140 Cyber Workforce Qualification Program requirements for System Administrator (DCWF 451), Intermediate level
● US citizenship required

● Security clearance level: TOP SECRET

Location: Fort Huachuca, AZ

GDIT IS YOUR PLACE
At GDIT, the mission is our purpose, and our people are at the center of everything we do.
● Growth: AI-powered career tool that identifies career steps and learning opportunities
● Support: An internal mobility team focused on helping you achieve your career goals
● Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off
● Flexibility: Full-flex work week to own your priorities at work
● Community: Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

The likely salary range for this position is $147,292 - $199,278. This is not, however, a guarantee of compensation or salary. Rather, salary will be set based on experience, geographic location and possibly contractual requirements and could fall outside of this range.

Scheduled Weekly Hours:

40

Travel Required:

Less than 10%

Telecommuting Options:

Onsite

Work Location:

USA AZ Fort Huachuca

Additional Work Locations:

Total Rewards at GDIT:

Our benefits package for all US-based employees includes a variety of medical plan options, some with Health Savings Accounts, dental plan options, a vision plan, and a 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company match. To encourage work/life balance, GDIT offers employees full flex work weeks where possible and a variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave. To ensure our employees are able to protect their income, other offerings such as short and long-term disability benefits, life, accidental death and dismemberment, personal accident, critical illness and business travel and accident insurance are provided or available. We regularly review our Total Rewards package to ensure our offerings are competitive and reflect what our employees have told us they value most.

 

Our Identity Verification Process:

As part of the hiring process, we will ask you to complete an identity verification process that leverages advanced biometrics and artificial intelligence to ensure authenticity and protect against identity fraud. You are expected to be on camera during virtual interviews. We reserve the right to take your picture to verify your identity and prevent fraud. By proceeding, you authorize the collection, processing, and use of your biometric data for identity verification and security purposes.

About Our Work:

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 26,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 50 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans