Currently, **ManTech** is seeking a motivated, career and customer-oriented **Senior Network Engineer** to join our team in **Chantilly, VA.** This is an **Onsite** position. The work is high profile and critical to our nations’ security. This position ensures effective execution of all network engineering tasks with the customer assigned projects. The position is also responsible for providing thought leadership for our clients while providing technical oversight for network solutions. The position performs a critical role in understanding the clients’ networks and strategies for interconnection, secure transmission, and special configurations. The position will be part of Program leadership and will regularly interface with client leadership and ManTech senior leadership. **The Senior Network Engineer shall possess the following capabilities:** + Design, implement, and maintain network systems + Collaborates with teammates to create, implement, and troubleshoot new engineering designs + Translates requirements from internal stakeholders into engineering designs based on a standardized network architecture + Presents proposed changes to the standardized architecture to internal review boards + Creates drawings and other configuration management documentation to track network changes + Troubleshoots switch, router, and firewall connectivity issues between various customer sites + Travels to various data centers in the WMA to support ongoing network operations + Completes patching of all network devices (router, switch, firewall, etc.) in accordance with Sponsors policies + Performs quarterly reviews of all network device access control lists and rulesets **Basic Qualifications:** + Bachelor’s Degree or higher in relevant area (Computer Science or Systems Engineering) or Associate’s Degree and 10 years of relevant IT experience + 7+ years of relevant experience in Network Engineering/Administration + 7+ years of experience leading and managing system updates, upgrades, problem tracking and reporting + Experience with managing a team and independently prioritizing resources + Experience writing clear, concise, and user-friendly technical reports + Appropriate ND 50-05/DoD 8570.01-M Certification + Ability to travel domestically **Preferred Qualifications:** + Experience with Bastille Networks WIDS (Wireless Intrusion Detection System) **Security Clearance Requirements:** + Must have a current/active TS/SCI w/ polygraph. **Physical Requirements:** + Must be able to remain in a stationary position 50%. + Must be able to lift and carry items weighing up to 15 pounds. + Frequently communicates w/co-workers, management & customers. Must be able to exchange accurate information in these situations. 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.