ManTech seeks a motivated, career and customer-oriented **System Administrator** to join our team in **San Antonio, Texas.** **Responsibilities include but are not limited to:** + Configure and manage UNIX and Windows operating systems and installs/loads operating system software, troubleshoots maintains integrity and configures network components along with implementing operating systems enhancements to improve reliability and performance. + Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. + Manage IT system infrastructure and any processes related to these systems. + Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc. + Provide support for the dispatch system and hardware problems and remains involved in the resolution process. + Optimize system operations and resource utilization and perform system capacity analysis and planning. + Analyze and resolve complex problems associated with server hardware, applications and software integration. **Basic Qualifications:** + Bachelor’s degree in a technical discipline from an accredited college or university. Five (5) years of additional related experience may be substituted for a degree. + Ten (10) years’ experience as a System Administrator or related experience in in programs and contracts of similar scope, type, and complexity. + LINUX/Red Hat experience. + IAT Level II certification or the ability to obtain within 60 days of start. + Must be able to perform expert-level troubleshooting. + Demonstrated experience with modern automation/configuration tools. **Preferred Qualifications:** + Experience/familiarization with full lifecycle management of Linux systems, to include provisioning, configuration management and patching. + Red Hat Certified System Administration Certification. **Clearance Requirements:** + Must have a current/active Top Secret/SCI with Polygraph **Physical Requirements:** + The person in this position must be able to remain in a stationary position 50% of the time. + Occasionally move about inside the office to collaborate with other leaders/teams, use standard office automation equipment, and virtual communication. 6.26.BP.SH.AB.AL.23 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. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.