Systems Administrator Sr Principal (TS/SCI with Poly Required) at GCI – Virginia | Jobyssey

GCI embodies excellence, integrity and professionalism. The employees supporting our customers deliver unique, high-value mission solutions while effectively leveraging the technological expertise of our valued workforce to meet critical mission requirements in the areas of Data Analytics and Software Development, Engineering, Targeting and Analysis, Operations, Training, and Cyber Operations. We maximize opportunities for success by building and maintaining trusted and reliable partnerships with our customers and industry.

At GCI, we solve the hard problems. As a Sr. Systems Administrator, a typical day will include the following duties:

The candidate will be accountable for Windows system administration, application-based system services and developer-based applications that support the infrastructure. Responsibilities on these systems include SA engineering, operations and maintenance, troubleshooting, configurations, installation, and research and development to ensure continual and optimal operation. The position requires general technical knowledge of systems, networks, and application security as well as an understanding of operational-level security frameworks, policies, processes, and standards. The candidate must have strong analytical skills for troubleshooting complex issues, attention to detail, and the ability to multitask in a fast-paced environment.

KEY RESPONSIBILITES

Maintain Windows operating systems, application support, integration, design, and assistance as needed with additional duties to support the team
Schedule and install Windows security patching, file and server backups, maintain group policies, troubleshoot server issues, and manage server installs (rack, configure, security harden, maintain)
Schedule, plan and perform system upgrades
Maintain, plan and monitor the back-end infrastructure
Support cyber security engineer performing security analysis of audit logs and other artifacts of a networked computer system

REQUIRED QUALIFICATIONS

Demonstrated experience with Microsoft Windows 11 & Windows Server 22, Active Directory, Group Policy and Certificate Authority administration
Demonstrated experience with Hypervisor technologies (Hyper-V virtual machines, virtual networking and failover clustering, KVM, VMware, ESXi and vCenter virtual machines, virtual networking and failover capabilities, etc.)
Remote server access and management (RDP and KVM)
Demonstrated experience installing and configuring systems which support infrastructure and/or R&D activities
Demonstrated experience with installing and updating patches on the operational and development systems, and documenting compliance
Demonstrated experience collaborating with other systems administrators, security analysts, and network engineers to solve complex problems
Experience in leveraging scripting and system automation tools (PowerShell, BASH, etc.)
Demonstrated experience in performing and maintaining system backups
Experience performing with minimal guidance under pressure and tight deadlines
Excellent communication skills (written, verbal and face-to-face)
Securing and maintaining standalone environments

DESIRED SKILLS

Experience with PKI and Windows Certificate Authority administration
Experience with Linux distributions (Rocky, Ubuntu, etc.) and CLI capabilities
Experience in applying cyber security practices in real-world environments
Experience working with log analytic tools such as Splunk, Rapid 7 (regular scanning and reporting requirements)
Powershell use and scripting capabilities
Nakivo active backup utility
WhatsUp Gold network change management
InterMapper network monitoring
SmarterMail internal SMTP mail
IT and security certifications
Familiar with Atlassian suite of tools
Knowledge of cloud technologies, provisioning and security

*A candidate must be a US Citizen and requires an active/current TS/SCI with Polygraph clearance.

Equal Opportunity Employer / Individuals with Disabilities / Protected Veterans

Explore more jobs