Secure our Nation, Ignite your Future Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement. ManTech is looking for a motivated, customer-oriented Senior Systems Administrator/Analyst to join our team in Chantilly, VA. Responsibilities include, but are not limited to: * Maintain/troubleshoot Windows servers and workstations, both on-site and remote * Perform Windows system administrative support to include adding and removing users, installing software and monitoring systems * Maintain domain controllers, file servers, application servers and other cloud resources * Properly receive and triage customer incidents in the ticketing system * Follow standard operating procedures to accurately log all tickets within the ticketing system * Perform remote troubleshooting through diagnostic techniques * Properly escalate unresolved tickets to the next tier of support * Engage with customers throughout the process and follow up to ensure proper incident closure * Ensure quality and productivity standards are maintained while meeting customer timelines * Assist in configuring baseline switches, routers and PCs being prepared for deployment * Coordinate equipment preparation and shipping, confirm customer receipt, and validate inventories * Perform remote site surveys and identify requirements for hardware and cabling * Other duties as assigned Basic Qualifications: * 5+ years of related experience as a System Analyst/Administrator or similar role * Level II certification * Experience with network and patch management * Experience with system security, data backup/recovery, and network monitoring * Experience with troubleshooting and problem solving issues to resolution * 10% local travel * Excellent customer interaction with a focus on positive service support * Excellent oral and written communication skills Preferred Qualifications: * Bachelor's Degree in Information Technology, Cybersecurity, Data Science, Information Systems, or Computer Science, from an ABET accredited or CAE designated institution * DoD 8140-451 Intermediate Certification required (Cloud+ or GICSP or SSCP or GSEC) -OR- equivalent DoD/Military Training as identified in 8140 qualifications matrix * Experience using ticketing systems such as Remedy or ServiceNow * ITIL 4 Foundations certification * Microsoft Certified Solutions Associate (MCSA) Security Clearance Requirements: * Top Secret clearance adjudicated within the last 6 years * Willing to submit to a random CI Polygraph Physical Requirements: * Must be able to remain in a stationary position 50%. * Needs to occasionally move about inside the office to access file cabinets, office machinery, etc. * Often positions self to maintain computers in the lab, including under the desks and in the server closet. * Frequently communicates with co-workers, management and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations. For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services. If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access http://www.mantech.com/careers/Pages/careers.aspx as a result of your disability. To request an accommodation please click careers@mantech.com and provide your name and contact information.