ManTech Network Engineer, Senior Principal in United States

ManTech is seeking a Senior Network Engineer to provide support and to operate network and security components which include routers, switches, firewalls, load balancers, wireless devices, data centers, and cloud services in both a greenfield and brownfield infrastructure. The successful candidate will support multiple networks that operate 24 hours a day 365 days a year requiring 99.99995% uptime. Normal business hours are between 6 a.m. and 6 p.m. Eastern Time. Daily duties include managing the USCIS network and security devices which include and are not limited to the following:

· Cisco ASA

· Cisco Security Manger

· Cisco routers/switches/firewalls

· IPS/IDS modules

· Cisco ISE

· Amazon Cloud

· Data center infrastructure

· Network Enclaves

· Xceedium Gatekeeper

· Riverbed

· Solarwinds

· Cisco Prime

· McAfee

· HP Fortify


· Two Factor Authentication

· Identity and Biometric tools

· Bluecoats

Duties :

· Troubleshooting Tier 3 & 4 level issues for LAN / WAN networks

· Troubleshooting Enclaves

· Working on Change Requests, Incidents, Work Orders

· Resolving Emergency Break Fix problems

· Ability to work in ServiceNow and use this tool effectively to work

· Understanding the work flows to expedite and provide operations support

· Collaborate with multiple teams for resolving issues

· Maintain documentation for all network infrastructure changes and process flows

o Document all processes and procedures

o Post documents to EID SharePoint site

· Serve as the technical expert for network infrastructure, security tools, appliances and services

· Collaborate with Network Architecture & Engineering teams to recommend solid well thought out solutions

· Responsible for mentoring junior staff and expanding their skill set

· Responsible for leading CIRT calls and outage resolutions


Requires Bachelor s degree (in Computer Science, Engineering, Economics or Math) or equivalent, and ten to twelve years of related (telecommunication analysis) experience.


Equivalent Experience/Education, Bachelor's Degree, Master's Degree, See Qualifications

Years of Experience

10-12 years w/Bachelors Degree, 07-09 years w/Masters Degree, See Qualifications

Position Type





ManTech International Corporation is comprised of approximately 7,300 talented employees who use advanced technology to help government and industry meet some of their greatest challenges around the world. We adhere to the simple, no-nonsense values on which ManTech was founded more than four decades ago, aligning squarely with the mission objectives of our customers. As our customer base continues to expand and diversify, we continue to diversify our workforce and solutions. Nearly half our employees have a military background, and approximately 70 percent hold a government security clearance. As a leading provider of innovative technology services and solutions for the nation's defense, security, health, space, and intelligence communities; we hold nearly 1,100 active contracts with more than 50 different government agencies.

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 Waretime 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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