Linux Systems Administrator (TS/SCI with Poly Required)

Type of Requisition:RegularClearance Level Must Currently Possess:Top Secret SCI + PolygraphClearance Level Must Be Able to Obtain:Top Secret SCI + PolygraphPublic Trust/Other Required:NoneJob Family:Systems AdministrationJob Qualifications:Skills:Information Technology Security, Infrastructure Support, Linux, Operating Systems (OS)Certifications:NoneExperience:10 + years of related experienceUS Citizenship Required:YesJob Description:Systems Administrator ExpertTransform technology into opportunity as a Systems Administrator Expert with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.At GDIT, people are our differentiator. As a Systems Administrator Expert you will help ensure today is safe and tomorrow is smarter. 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.HOW A SYSTEMS ADMINISTRATOR EXPERT WILL MAKE AN IMPACTWHAT YOU’LL NEED TO SUCCEED:Provide daily operational support for Linux and Microsoft Windows operating systems and applicationsSupport virtual and physical infrastructure of servers running CentOS in a dev, test, and production configuration, and support an infrastructure of different applications comprising of end user applications, developer tools and infrastructure support applications. Develop and maintain environments running in Amazon Web Services (AWS).Maintain the integrity and security of systems by monitoring security feeds and dashboards in support of Continuous Monitoring activitiesDevelop and maintain standards and procedures for applications across a complex computing infrastructureDevelop and maintain comprehensive documentationMonitor application and operating system performance; analyze, document and remediate incidentsDevelop and oversee implementation of testing strategies and document the resultsLeverage scripting and system automation toolsMaintain current knowledge of relevant technologiesResearch and recommend hardware and software, coordinate installation, and provide backup recoveryInteract with users and evaluate vendor productsReview incidents to understand the root causes and ensure implementation of proper fixesCollaborate with system administrators, engineers, and the client to ensure proper integration of applicationsWorks with tech team to complete required maintenance and patching, DTOs, File TransfersProvides security reports (e.g. Log files, Scans, etc.)Coordinates waivers and approvals  Education: 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. Required Experience: 10+ years of related experience Required Technical Skills:Extensive experience with Redhat and/or CentosDemonstrated experience with VMWare ESXi infrastructure 6.x + vCenter server, host clustering with HA, DRS, replicationDemonstrated experience in server builds using automated mechanismDemonstrated experience with Ansible and/or PuppetDemonstrated experience with Ansible playbooks for virtual and physical instance provisioning, configuration management and patching and software developmentDemonstrated experience with building, upgrading and maintaining applications and services in an AWS accountDemonstrated experience with code maintenance using Git, Gitlab, and/or GithubDemonstrated experience with Atlassian Jira and ConfluenceDemonstrated experience with managing Elasticsearch on CentOSDemonstrated experience collaborating with other systems administrators, storage administrators, application developers, and network engineers to solve complex problems Preferred Skills:Certified Linux System AdministratorKnowledge of network engineering fundamentals and network designDemonstrated experience with Microsoft Window Server versions 2008, 2016Demonstrated experience with SCCM, WDS, MS SQL server, Powershell, batch scriptingDemonstrated experience working with syslog applications such as SplunkDemonstrated experience with NetApp NAS systems a plusDemonstrated experience with Hadoop infrastructure and applications (HDFS, Hue, Impala, Oozie, Solr, Spark, Yarn, Zookeeper) a plusDemonstrated experience with Cisco Nexus switches and Cisco Firepower Security Appliances a plusAWS Certification a plusITIL Foundations Certification a plusCertifications relating to IT Security (CISSP, GIAC, Security+) a plus Security Clearance Level: TS/SCI with Poly Location: On Customer SiteGDIT 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 holidaysThe likely salary range for this position is $153,000 - $207,000. 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:40Travel Required:NoneTelecommuting Options:OnsiteWork Location:USA VA McLeanAdditional 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.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.We connect people with the most impactful client missions, creating an unparalleled work experience that allows them to see their impact every day. We create opportunities for our people to lead and learn simultaneously. From securing our nation’s most sensitive systems, to enabling digital transformation and cloud adoption, our people are the ones who make change real.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.SummaryLocation: USA VA McLeanType: Full time