Sr. Network Security Engineer

Clearance Level
Information Security
Bethesda, Maryland

REQ#: RQ137759

Travel Required: Less than 10%
Public Trust: NACI (T1)
Requisition Type: Regular

GDIT is seeking a Sr. Network Security Engineer to support the Center for Information Technology (CIT) program in Bethesda, MD.  This is a 24x7x365 environment.


  • Provide LAN Administration support for Cisco Switches and Cisco ASA Firewalls
  • Provide NAC administration support for Cisco ISE, Forescout, Cisco ACS, RSA, Cisco AnyConnect, Gigamon, IDS/IPS
  • Assist in troubleshooting and problem-solving a wide variety of client/user issues and act as an escalation point for LAN/NAC related issues
  • Work closely with other IT functional teams to ensure cohesive support and strategies across the IT organization
  • Execute project plan as authorized by client 
  • Provide daily support and status for tickets, including service requests, incidents, problems, and tasks
  • Develop and execute change request plans


  • BS degree in Computer Science, Information Systems (or equivalent) and five years of related experience
  •  Minimum of five years of experience implementing and maintaining Network Access Control technologies (i.e. Cisco IDS/IPS, ISE, Forescout, Cisco AnyConnect)
  • Minimum of two years of experience with mid to large scale implementations of Network Access Control technologies


  • Experience with network infrastructure in enterprise datacenter solutions
  • Related certifications with Cisco or Forescout (i.e. CCNA, CCNA/Security, CCNP/CCNP Security, CCIE, Cisco SISE, Forescout FSCA/FSAA/FSCE)
  • Experience with Cisco wireless LAN controllers
  • Experience configuring Cisco ASAs and switches
  • Experience configuring 802.1X
  • Experience configuring and implementing network segmentation, including VLANs and MPLS
  • Experience with multiple end-system operating systems, including Windows, Linux, Mac OS, or Apple IOS
  • Experience with ServiceNow
  • Experience with Visio


  • Excellent written and verbal communication skills
  • Ability to explain and elaborate on technical details
  • Ability to multitask in a fast-paced IT environment



About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.