Senior LAN/WAN Engineer

Secure our Nation, Ignite your Future

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 Senior 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). This is a part-time position.

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 of study
• A minimum of seven (7) 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
• Demonstrated experience guiding and training junior technical staff

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.

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 complian