**Description & Requirements** 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’ll help protect our national security while working on innovative projects that offer opportunities for advancement. Currently, ManTech is seeking a motivated, career and customer-oriented **Senior** **System Administrator** to join our team in the **Fort Meade, MD** . This position is part of a team that provides engineering and Information Technology services to provision, manage, sustain, innovate, modernize, refresh, reengineer, and secure the Nuclear Command and Control (NC2) and Non-NC2 cryptographic production infrastructure. **Responsibilities include, but are not limited to:** + Providing support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. + Management of IT system infrastructure and any processes related to those systems + Providing support to IT systems including day-to-day operations, monitoring, and problem resolution for client/server/storage/network devices + Providing problem identification, diagnosis, and resolution of problems. + Configuration and management of Windows operating systems and installing/loading operating system software + Administering and securing network switching and routing devices + Managing and maintaining network security through the use of access controls and path management + Implementing, troubleshooting IT systems. + Performing daily activities of configuration and operation of IT systems. + Providing Tier 2 / Tier 3 problem identification, diagnosis, and resolution of problems. + Optimizing system operations and resource utilization and performing system capacity analysis and planning. + Configuring and managing Windows operating systems and installing/loading operating system software. + Implementing operating systems enhancements improving reliability and performance. + Providing detailed analysis and feedback to customers. **Basic Qualifications:** + Bachelor’s degree and 5 years of experience or 10 years of total experience with Security + Certification. + Experience with: + Implementing, troubleshooting IT systems. + Performing daily activities of configuration and operation of IT systems. + Providing Tier 1 / Tier 2 problem identification, diagnosis, and resolution of problems. + Optimizing system operations and resource utilization and performing system capacity analysis and planning. + Configuring and managing Windows operating systems and installing/loading operating system software. + Implementing operating systems enhancements improving reliability and performance. + Providing detailed analysis and feedback to customers **Preferred Qualifications:** + Experience with: + Windows Operating System (Server & Desktop) + Exchange / Active Directory + Basic network administration (Cisco routers/switches) + Atlassian tool suite (e.g., JIRA, Confluence) + Working within a software development environment + Agile methodology **Security Clearance Requirements:** + Currently hold an active TS/SCI with polygraph **Physical Requirements:** + Must be able to remain in a stationary position 50%. + Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer. + The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. The projected compensation range for this position is $121,800.00-$204,100.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, ManTech invests in it’s employees beyond just compensation. ManTech’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, Short Term and Long Term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections. 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. 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