Network Administrator

ManTech International Corp

Laurel, MD

JOB DETAILS
SKILLS
Administrative Skills, Anti-Virus Software, Atlassian JIRA, CCNA - Cisco Certified Network Associate, CISCO PIX Firewall, Cisco Network Systems, Cisco Nexus Switches, Cisco Switches, CompTIA Security+, Computer Network Defense (CND), Computer Systems, Computer Workstations, Customer Relations, Data Analysis, Federal Contracts, Federal Government, Firewalls, GSEC - GIAC Security Essentials Certification, Government Contracts, Government Intelligence, High School Diploma, Information Technology & Information Systems, Intelligence Agencies, Internet Security, Microsoft Windows Operating System, Network Administration/Management, Network Configuration Management, Network Monitoring, Network Operations Center, Network Performance/Analysis, Network Programming, Network Routers, Network Switching, People Management, Performance Analysis, Presentation/Verbal Skills, RADIUS (Remote Authentication Dial-In User Service), Red Hat Linux Operating System, SSCP - Systems Security Certified Practitioner, Sensitive Compartmented Information (SCI), Software Configuration Management, Software Development, Software Evaluation, Software Testing, Software Upgrades, Top Secret Clearance, Unix Shell Programming
LOCATION
Laurel, MD
POSTED
4 days ago

General information

Requisition #

R68652

Locations

USA-MD-Laurel

Posting Date

06/12/2026

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 seeks a motivated, career- and customer-oriented Network Administrator with a focus on Cisco Networks to join our team in Laurel, MD. You will be part of a mission-driven team delivering enterprise infrastructure capabilities to support a global workforce engaged in national defense operations. This position is part of the Enterprise Infrastructure Services (EIS) organization-responsible for MPO's Enterprise Information Technology (EIT), the backbone platform supporting all enterprise users. You will work with customers, Integrated Product Teams (IPTs), and vendors to deliver secure and reliable network services across Data Center & Compute environments.

Responsibilities include, but are not limited to:

  • Maintain and upgrade network infrastructure, including routers and switches

  • Update and configure antivirus software and other tools to secure the network

  • Apply Security Technical Implementation Guide (STIG) updates to switches and follow Software Test and Evaluation (STE) policies

  • Design and plan Cisco NEXUS network infrastructure, including setup and ongoing maintenance

  • Configure Remote Authentication Dial-In User Service (RADIUS) for switch administration

  • Use network monitoring and management tools such as Solarwinds to oversee network performance

  • Must be willing to work a flexible schedule between 6:00am-6:00pm and may be assigned to an evening patching schedule

Minimum Qualifications:

  • Bachelor's degree in a technical discipline from an accredited college or university and Twelve (12) years of experience as a Network Administrator supporting programs and contracts of similar scope, type, and complexity. In lieu of a Bachelor's degree, three (3) years of additional Network Administration experience with an Associates degree may be substituted OR eight (8) years of additional experience and a High School Diploma

  • Demonstrated experience downloading software and upgrading Cisco switches and firewalls

  • Strong technical background in Cisco FirePower Firewalls

  • IAT II certification (DoD 8140 required within 60 days of starting employment. Acceptable certifications include CCNA-Security/CySA+/GICSP/GSEC/Security+ CE/CND/ or SSCP)

Preferred Qualifications:

  • Familiarity with configuring, scripting, and managing Unix, RHEL and Windows operating systems

  • Familiarity with Scanboy

  • Familiarity with JIRA ticketing system

  • Familiarity with Enclave environments

  • Familiarity with Solarwinds

  • Familiarity using LatteART and XACTA

Clearance Requirements:

  • Must have a current/active TS/SCI with Polygraph

Physical Requirements:

  • The candidate must be able to move, carry, and deliver workstations from the office to the customer's desk

  • The person in this position must be able to remain in a stationary position 50% of the time

  • Must communicate with co-workers, management, and customers via email, phone, or virtual meetings, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

The projected compensation range for this position is -. 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 its 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 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 careers@mantech.com and provide your name and contact information.

About the Company

M

ManTech International Corp

Our Mission Our mission is empowering our nation through a diverse and skilled workforce securely delivering innovative technology, consulting services and digital solutions for our customers’ mission success, every day. Our Vision Our vision is Securing the Future as the most trusted partner for U.S. Defense, Intelligence and Federal Civilian customers through the power of One ManTech. When these agencies think of an essential partner for their national and homeland security needs, they think ManTech. Our Values Our values are grounded in a bedrock of truth, integrity and caring for each other and the mission. We hold steadfast to: • TRUST – We earn and protect the trust of our customers, employees and investors through an enduring foundation of respect, fairness, credibility and honoring our commitments, always. • INCLUSION – We are an inclusive, diverse and talented workforce with a passion for mission success, intellectual capital, creativity and integrity. Our high ethical standards and investment in our people build confidence with our customers. • QUALITY– We deliver exceptional quality to customers through differentiated technology solutions and an uncompromising focus on excellence, value and innovation.
COMPANY SIZE
5,000 to 9,999 employees
INDUSTRY
Other/Not Classified
FOUNDED
1968
WEBSITE
https://www.mantech.com/about