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Unlock the secrets of intelligence with ManTech! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with ManTech! 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.