Job Abstract

Secure our Nation, Ignite your Future

Join a new and exciting opportunity to protect national security and provide premier mission focused IT services for a dynamic and growing program.  Currently, ManTech is seeking a motivated, career and customer-oriented System Administrator, Senior, to join our team in Linthicum, MD.  In this role, you will provide support for implementation, troubleshooting and maintenance of IT systems and manage IT system infrastructure and any processes related to these systems. 

Responsibilities include, but are not limited to: 

• Provide support for customer networks involving cross-domain solutions, including VPNs, one-way data transfers, unclassified mission related infrastructures, and Taclane 175 encryption devices. 

• Specific configurations include routing using MPLS/VPLS, OSPF, EIGRP at the Core and Distribution devices and switching at the Access devices.

• Configure and troubleshoot Cisco catalyst switches (Spanning Tree, Port Security, VTP,Ether channels, VLANs)

• Configure and troubleshoot Cisco ASR routers (including HSRP, OSPF, BGP, route-map)

• Configure/Troubleshoot Cisco ASA firewalls

• Troubleshoot various DNS, SMTP, IP routing, latency, and connectivity issues

• Implement TCP/IP & related services-DHCP/DNS

• Install/Upgrade Cisco Switches and Firewalls (ASA) IOS using TFTP

• Maintain all LAN/WAN connectivity

• Document network problems and resolution for future reference

• Oversee software and network security

Basic Qualifications: 

• Bachelor’s degree in a technical discipline from an accredited college or university.  Five years of additional related experience may be substituted for a degree. 

• 10 years of related experience.  

• LINUX experience.

• IAT Level II certification or ability to obtain within 60 days of start date.

Preferred Qualifications:

• 15 years of related experience.

Security Clearance Requirements: 

• Current/Active TS/SCI with Polygraph  

Physical Requirements: 

• Sedentary work, speaking, standing, talking, walking, working with computers, working with data, working with numbers and figures, ability to handle stress & work under pressure, ability to use MS Office and a PC, analytical or critical thinking skills, leadership and listening skills, multi-tasking, ability, negotiating skills, oral & written communication skills, presentation skills, project management ability and skills, computer operating skills, and team building skills 

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.

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