Network Engineer

ManTech is seeking a Subject Matter Expert (SME) Level Network Engineer with a specialized focus on Network Access Control (NAC), particularly with significant expertise in CISCO network appliances and associated management software to join our technology-based program supporting a key Government customer in Herndon, VA. The ideal candidate will have a deep understanding of network security principles, excellent problem-solving skills, and a proactive approach to maintaining and optimizing endpoint validation Duties, Tasks & Responsibilities:Subject Matter Expert (SME) Level design, implementation, and management of NAC solutions utilizing CISCO network devices including load balancers, LINUX servers, and CISCO appliances Perform configuration, maintenance, and troubleshooting of NAC policies and profilesMonitor network traffic for potential security threats and proactively address vulnerabilities Collaborate with cross-functional teams to ensure network security standards align with business objectives Stay up-to-date with the latest industry trends and best practices in network security and NAC technologies Provide technical support and guidance to internal and external teams and clients on NAC and network security related issues Participate in the evaluation and selection of new NAC technologies and vendors  Basic Qualifications:Bachelor's or Master’s Degree in a relevant Information Technology, Computer Science, Systems Engineer field or similar16+ years relevant Network Engineering/Information Technology experienceSignificant expertise in CISCO network appliances and associated management software Significant experience/understanding of network security principleProactive approach to maintaining and optimizing endpoint validationAbility to translate customer requirements into enterprise network solutions SME level experience as a CISCO Network Engineer with a focus on Network SecurityStrong proficiency with NAC platforms In-depth knowledge of network protocols, TCP/IP stack, and OSI model Significant experience with firewall management software such as Cisco FTD Excellent communication and interpersonal skills Ability to work independently and collaboratively in a fast-paced environment  Preferred Qualifications:Knowledge of NAC management software such as Cisco Identity Service Engine (ISE) is high desiredIndustry certifications such as CCNA Security, CCNP Security, REDHAT Certified Architect (RHCA), or similar industry certifications are preferredDemonstrated experience with Network Access Controls (NAC), CISCO profiling ISEExperience with Linux Operating Systems (OS) and Python scriptingExperience with a wide variety of network technologies and solutions architectures is a plus Broad understanding of technical principles, theories and concepts in the networking field Knowledge of state-of-the-art systems engineering principles and network design concepts Cloud Service Provider and hybrid cloud experience (extending on premise networks to cloud providers such as AWS, Azure, Oracle and Google) Strong proficiency with Network Access Control (NAC) platforms Security Clearance RequiredAn active TS/SCI with Polygraph. Physical Requirements:Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.Occasionally move about inside the office to access file cabinets, office machinery, etc.Constantly position self to maintain computers in the lab, including under desks and in server closets.

Created: 2025-03-01