Skip to content

General information

Requisition #
R54860
Locations
USA-DC-Washington
Posting Date
10/17/2024
Security Clearance Required
Public Trust/Suitability
Remote Type
Onsite
Time Type
Full time

Description & Requirements

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer-oriented Journeyman LAN/WAN Engineer to join our team in the Washington, DC. This position supports a 24/7/365 service center. You will have the option of three different shifts (1st, 2nd, and 3rd).

Responsibilities include but are not limited to:

  • Perform as mid-level contributor with knowledge and experience in local and wide area networking, communications, and related software/hardware within a multi-platform operating environment.
  • Responsible for the integration of a network including assisting in the planning, design, installation, maintenance, management, and coordination of the corporate LAN/WAN.
  • Current on most technological developments and applications, and helps to evaluate vendor products to make recommendations for purchase.
  • May work with Voice and/or Data.
  • Deploy, maintain, troubleshoot, and support firewalls, routers, switches, proxies, VPN, DNS, email, and SD-WAN and cloud routing to include Cisco CSRs;
  • Optimize network performance to achieve the desired CoS and QoS;
  • Monitor and trace network traffic across multiple boundaries to resolve faults;
  • Create and manage designs, test plans, RCAs, and AARs;
  • Create and maintain secure device configuration baselines;
  • Support incident response and project implementation with internal and external teams and third-party vendors;
  • Guide and train junior LAN/WAN/Remote engineers

Basic Qualifications:

  • A bachelor’s degree in Computer Science or related field
  • A minimum of two (2) years of related experience
  • Demonstrated experience maintaining, troubleshooting, and supporting firewalls, routers, switches, proxies, VPN, DNS, email, and SD-WAN and cloud routing
  • Demonstrated experience optimizing networks
  • Demonstrated experience creating designs, test plans, RCAs, and AARs

Preferred Qualifications:

  • Proficient with ServiceNow

Clearance Requirements:

  • Must be a U.S. citizen
  • Must be able to obtain a Public Trust

Physical Requirements:

  • Must be able to be in a stationary position more than 50% of the time 
  • Must be able to communicate, converse, and exchange information with peers and senior personnel 
  • Constantly operates a computer and other office productivity machinery, such as a computer 
  • The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations 
  • The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.


The projected compensation range for this position is $79,300.00-$133,100.00. 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, 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.