Mantech

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 Network Security Engineer to join our team in the Washington, DC. This position supports a 24/7/365 service operations. You will have the option of two different shifts (1st or 2nd).

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, monitor and implement physical as well as 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 the customer environment.  Use Fortigate to secure and monitor firewalls.
• Critically analyzes network infrastructure to find opportunities to improve efficiencies and reduce the security threat profile.
• 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, 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.
• Perform effective escalation of problems, identify issues and determine efficient and effective resolutions.
• Participate in audits covering network security services and technologies.
• Participate in on-call after hours coverage

Basic Qualifications:

• A bachelor’s degree in Computer Science, Math, Electrical Engineering, or related field.
• 2+ years of network security experience.
• Hands on experience in managing and monitoring network security; hands on experience using tools such as Cisco ISE, Fortigate (Fortinet, FortiAnalyzer, FortiManager); and Zscaler.
• Demonstrated experience working with STIGs, firewalls, proxies, Cisco network devices, vulnerability scanning tools, and FISMA requirements and findings.
• Demonstrated experience conducting network security audits.
• Demonstrated experience contributing to network security incident response.

Preferred Qualifications:

• Proficient with ServiceNow

Clearance Requirements:

• Must be a U.S. citizen
• Must be able to obtain a Public Trust; prefer an active Secret or TS clearance.

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.