System Administrator - Full-time / Part-time

The Systems Administrator position will apply expertise in the installation, configuration, operations, and maintenance of both Windows - and Linux - based architectures. The systems administrator will focus on improving the stability and performance of the platform, maintaining and improving the security posture of the domain, as well as utilizing Splunk for continuous monitoring of system health, and troubleshooting issues that arise. This individual is accountable for Splunk, Linux, Windows, and application systems that support the infrastructure. Responsibilities on these systems include SA engineering, operations and maintenance, and research and development to ensure continual operation. The individual must be proficient in building, documenting, and providing tier 3 engineering support.

The position requires deep technical knowledge of systems, networks, and application security as well as a solid understanding of enterprise-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 duties include maintaining operating systems, application support, integration, design, and assistance with additional duties as needed to support the team.

HOW A SYSTEM ADMIN WILL MAKE AN IMPACT:

• Provide daily operational support for Linux and Microsoft Windows operating systems and applications
• Support a virtual infrastructure of 700 servers running CentOS and Rocky 8 in a dev, test, and production configuration, and support an infrastructure of 60 different applications comprising of end user applications, developer tools and infrastructure support applications.
• Maintain the current virtual machine infrastructure, provide support to the remote users, and complete tasking to create new VM's
• Upgrade the VMWARE infrastructure
• Develop and maintain standards and procedures for applications across a complex computing infrastructure
• Develop and maintain comprehensive documentation
• Monitor application and operating system performance and analyze and document problems
• Develop and oversee implementation of testing strategies and document the results
• Leverage scripting and system automation tools
• Maintain current knowledge of relevant technologies
• Research and recommend hardware and software, coordinate installation, and provide backup recovery
• Interact with users and evaluate vendor products
• Review problems to understand the root causes of issues and ensure implementation of proper fixes
• Collaborate with system administrators, engineers, and the client to ensure proper integration of applications

WHAT YOU'LL NEED TO SUCCEED:

• Demonstrated experience with Microsoft Window Server versions 2008, 2012, 2016, and 2019
• Demonstrated experience with SCCM, WDS, MS SQL server, Exchange, Powershell, batch scripting
• Demonstrated experience with SCOM and MIM
• ITIL Foundations Certification a plus
• Certifications relating to IT Security (CISSP, GIAC, Security+) a plus

WHAT YOU BRING TO THE TABLE:

• 15+ years of related experience
• Bachelor's degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical training, or work/military experience
• Active TS/SCI with SCI Polygraph clearance

• Certified Linux System Administrator

• Extensive experience with Centos, Rocky 8

• Demonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replication
• Demonstrated experience with Docker, Elasticsearch, Kafka, and basic Linux skills for latest versions of CentOS/Rocky 8
• Upgrading VMWare infrastructure
• Demonstrated experience with VMWare Tanzu
• Demonstrated experience in server builds using automated mechanism
• Demonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management and patching and software development
• Demonstrated experience with Ansible with Rundeck
• Demonstrated experience with Atlassian Jira
• Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems

• Location: At Customer Site - near Tysons Corner

• US Citizenship Required

GDIT IS YOUR PLACE:
• 401K with company match
• Comprehensive health and wellness packages
• Internal mobility team dedicated to helping you own your career
• Professional growth opportunities including paid education and certifications
• Cutting-edge technology you can learn from
• Rest and recharge with paid vacation and holidays

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Work Requirements

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Years of Experience
15 + years of related experience

* may vary based on technical training, certification(s), or degree

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Certification

Travel Required
None

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Citizenship
U.S. Citizenship Required

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 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 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.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.