Currently, ManTech is seeking a motivated, career and customer-oriented Senior Network Security Engineer Lead to join our team supporting a large U. S. Government program within the National Capitol Region. Responsibilities include, but are not limited to: Provide network security for the customer’s LAN environment, Remote Access, site to site VPNs, Wireless, TIC and support for the WAN to include but not limited to upgrades, patches, etc. Manage and implement physical as well as AWS cloud-based firewalls, proxies, VPN concentrators, and related network security and protection technologies. Manage and monitor the Cisco ISE solution and environment for identity management. Develop, implement, and sustain network operating rules, objects, and flows across a complex, global enterprise. Implement, operate, configure, maintain, and replace (as needed) the Internal Proofpoint Mail Servers. Collaborate with groups to support the Zscaler environment and customer’s TIC. Collaborate with analysts, engineers, and data scientists to deliver continuous improvement in cyber defense/resilience. Work with and provide guidance to Security Operations Center and other Information Security team activities on security strategies, processes, response, and technologies. Provide support to Incident Response on security incidents including mock security incident exercises. Critically analyze network infrastructure to find opportunities to improve efficiencies and reduce the security threat profile. Provide mentorship and training on areas of expertise to Information Security and other internal teams. Participate in audits covering network security services and technologies. Participate in proactive research and provide recommendations for continuous improvement on information security technologies, processes, and services. Participate in on-call coverage and perform effective escalation of problems and issues. Present project status reports to senior management, adhere to policies and practices relative to technical guidelines and change management processes, and may contribute to the development of new policies and practices by suggesting innovative ideas. Work closely with business and application owners on design, troubleshooting, support, and documentation of new application deployment and enhancements. Perform internal audits and reviews to ensure compliance with all security policies and procedures which includes internal penetration and vulnerability scans. Evaluate new and emerging network security trends, products, and technologies. Basic Qualification: Requires Bachelor's degree or equivalent in Computer Science or a related field. Must have a minimum of 7 years of IT experience of which at least 5 years providing network security support for LAN and WAN environments. Must have hands-on experience with Fortigate (Fortinet, FortiAnalyzer, FortiManager); Cisco ISE; and Zscaler. Experience with researching, evaluating, testing, recommending, and implementing new security software or devices. Experience with developing, testing, and operating firewalls, intrusion detection systems, enterprise anti-virus systems and software deployment tools. Familiar with current network security technological developments and applications. Experience with evaluation of vendor products to make recommendations for purchase. Security Clearance Requirements: Must be a U.S. citizen. Must possess and maintain an Active Top Secret clearance. Physical Requirements: Work to be performed at a government facility in the National Capitol Region. Must be able to communicate, converse, and exchange information with peers and senior personnel. 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. #J-18808-Ljbffr ManTech
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