SYSTEM ADMINISTRATOR

General information Requisition # R59983 Locations USA-MD-Hanover Posting Date 04/23/2025 Security Clearance Required TS/SCI w/ Poly Remote Type Onsite Time Type Full time Description & Requirements Unlock the secrets of intelligence with ManTech! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with ManTech! ManTech is seeking a motivated, career and customer-oriented System Administrator, to join our team in Hanover, MD. The team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our Nation. This effort is the contract vehicle for the Enterprise Infrastructure Services organization overseeing MPO's Enterprise Information Technology (EIT). EIT is MPO's backbone- platform for all Enterprise users. Data Center & Compute Services is the EIS enabling organization working with customers, Integrated Product Teams (IPT), and vendors to deliver select EIT. Responsibilities Included but are not limited to: Responsible for ​​configuring and managing Linux and Solaris operating systems and installing/loading operating systems software, troubleshooting, maintaining integrity of and configuring network components, along with implementing operating systems enhancements to improve reliability and performance. Responsible for several hundred servers in a test environment running a wide variety of Operating Systems to include Windows, Red Hat Linux, CentOS, Fedora Core, BSD, Solaris and Debian. Will manage a wide range of Linux services to include Apache, Radius, TACACS, NIS, DNS, Syslog, NetBackup, LDAP, iptables (firewall) and NTP. Will manage VMWARE ESXi cluster using VCenter running on Cisco UCS blade servers. Will manage NetApp storage system running clustered data on tap with several hundred terabytes of space. Responsible for keeping all devices patched in accordance with SSP security standards. Responsible for modifying the configuration of Cisco networking devices.

Minimum Qualifications:

High school diploma with twenty (20) years of relevant experience OR ​​Associates degree with fifteen (15) years of relevant experience OR bachelor's degree with twelve (12) years of relevant experience. Experience managing the project work as defined by the government. Experience leading medium to large complex projects and major phases of very large projects while providing highly technical and specialized guidance and solutions to complex IT problems.

Preferred Qualifications:

​Experience in implementing solutions with PKI-controlled access is desired. Experience analyzing and resolving complex problems associated with server hardware, applications, and software integration. ​Security + CE certification​

Clearance Requirements:

Must have a current/active TS/SCI w/ Polygraph.

Physical Requirements:

Bending, carrying, kneeling, lifting, light work up to 20 lbs., reaching, repetitive motions, sedentary work, walking, working with data, ability to handle stress & work under pressure, ability to use MS Office, ability to use a PC, analytical or critical thinking skills, interpersonal & people skills, leadership skills, listening skills, multi-tasking ability, oral & written communication skills, organizational skills. The projected compensation range for this position is $125,500.00-$210,200.00. 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. ManTech International Corporation considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with ManTech, please email us at [email protected] and provide your name and contact information.