System Administrator

System AdministratorSystem Administrator Herndon, VA Active TS/SCI with PolygraphCompany Overview: Cornerstone Defense is the Employer of Choice within the Intelligence, Defense, and Space communities of the U.S. Government. Realizing early on that our most prized assets are our employees, we continually focus our attention on improving the overall work/life experience they have supporting the mission. Our Team is pushed every day to use their industry leading knowledge to provide end-to-end solutions to combat our nation's toughest and most secure problems. If you are looking for a place to not only be professionally challenged, but encouraged and supported by a company that cares, don't look any further than Cornerstone Defense.Job Responsibilities:Support a small group of end users who use our system and several other systems that we supportMonitor system performance and troubleshoot issues, sometimes under time pressureAnalyze system performance, identify bottlenecks, and document proposed optimizations to improve overall system efficiency and responsivenessMaintain accurate documentation of system configurations, procedures, and troubleshooting stepsInterface with customers and represent the entire System Admin Team during high impact operationsRequired Skills:5+ years of related work experienceExperience in System Administration (i.e. Linux/Unix or Windows platforms)Experience in communicating with customer representatives in a variety of forums, in both written and spoken form, regarding technical subjectsWillingness to successfully complete on-the-job (OJT) training to confirm ability to perform assigned duties and tasksWillingness and ability to work variable shifts, including days, nights, weekends, and holidaysDesired Skills:Experience managing and maintaining servers, workstations, and related infrastructure componentsExperience with Active Directory, Group Policy, DNS, DHCP, and other core services.Advanced troubleshooting skills and problem-solving abilities and able to diagnose and resolve complex technical issuesExpertise in on-premises virtualization (AHV, VMWare ESXi, Hyper-V, etc.) or cloud expertise (AWS or Azure)Experience with VDI infrastructure, monitoring infrastructure, securing infrastructureExperience with documenting technical details in Confluence and task tracking in JiraCloud, INFOSEC, or any recent IT certificationsPrevious shift-work experienceCompany Benefits: Cornerstone Defense offers a comprehensive list of benefits, designed to give employees and their families several options to choose from when selecting benefits that best fit their needs. These offerings include not only a full suite of the traditional Medical/Dental/Vision insurances, but also a number of other benefits and perks to include, but not limited to: A 401(K) plan with a company match, tuition and training assistances, paid vacation/leave, a fitness reimbursement program, college savings plan, commuter benefits, financial advisory services, flex spending accounts, health savings accounts, STD/LTD coverage, life and AD&D insurance, employee assistance programs, life financial planning assistance, and legal resources.