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, continuous monitoring of system health, and troubleshooting issues that arise. This individual is accountable for Windows, Linux, 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.
Provide daily operational support for Linux and Microsoft Windows operating systems and applications
Support a virtual infrastructure of 700 servers running CentOS 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
Maintain the integrity and security of systems by monitoring security feeds and dashboards in support of Continuous Monitoring activities
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
Bachelor's Degree in Computer Science, Information Technology, or other related technical discipline, or the equivalent combination of education, technical certifications, training, and work experience. (or equivalent experience)
10+ years of experience
Certified Linux System Administrator
Extensive experience with Redhat and/or Centos
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.
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 Jenkins
Demonstrated experience deploying Docker engines in virtualized platforms for containerization of multiple apps
Demonstrated experience with Atlassian Jira and SolarWinds
Demonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems
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
Demonstrated experience working with syslog applications such as Splunk
ITIL Foundations Certification a plus
Certifications relating to IT Security (CISSP, GIAC, Security+) a plus
About Our Work
We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.
GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements.
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.