Sr. Operation and Management Network Security Engineer

Leidos is seeking an Sr. Operation and Management Network Security Engineer to join our AGUN team.

PROGRAM SUMMARY:
The AGUN program is a highly demanding mission and requires expert technical and professional management to support the Army’s global wide area network and security infrastructure. You will be supporting a large and complex network migration and operations for the US Army. This role will include resolving service tickets on the AGUN system, providing prioritized validated/tested automated workflows to the Operations and Management Team, and providing operational support activities for a global network. 

CLEARANCE REQUIREMENT: 
Must currently possess and be able to maintain an active DoD SECRET security clearance. (US Citizenship required)

PRIMARY RESPONSIBILITIES:

• Operate and maintain secure network solutions operated as a centralized enterprise capability for the US Army.

• Support 24x7x365 AGUN operations focused on providing the Global Cyber Center (GCC) updates to facilitate command and control of the AGUN network.

• Conduct standard policy and configuration changes to the AGUN network, common remediation or those workflows considered pre-approved and normal.

• Provide management, triage, track, update workflows and service tickets in both JIRA Service Desk and GCC Service Now.

• Provide situational awareness on status of ticket resolution, provide status updates and brief updates as directed by the GCC.

• Escalate tickets and problems through the Jira Service Desk ticketing system to higher tier teams as required.

• Partner with key stakeholders and technical experts to perform legacy environment discovery, assessing current capabilities, configurations, and requirements to provide tier III support for the Army global network. 

• Collect, investigate, and identify network optimization strategies and techniques to meet capacity and performance standards.

   
BASIC QUALIFICATIONS:

• Minimum of a Bachelor’s degree with 8+ years' experience or Master's degree with 6+ years of experience (additional years of directly applicable experience may be accepted in lieu of a degree).

• Require active DoD IAT Level II (i.e. Security+) certification or equivalent prior to start.

• Demonstrated experience with supporting Palo Alto NGFW.

• Knowledge of Software Defined Networking (SDN) concepts.

• Demonstrated experience with virtualization technologies such as VMware.

• Experience with Red Hat.

• Hands on experience with InfoVista.

• Must have experience in working with two or more of the following vender network technologies: Cisco, Juniper, Palo Alto, Dell, or AppGate. 

• Demonstrated experience using ServiceNow.

• Demonstrated experience with networking concepts and protocols: LAN, WAN, BGP, TCP/UDP, IPSec, VPN, Routing(L2/L3), and Firewalls.

• Demonstrate experience in one or more of the following enterprise network management tools such as Palo Alto Panorama, Cisco Prime, Cisco DNA, or Junos Space.

• Experience with the following protocols: SFTP, SSH, SCP, SNMP, NTP.

• Must be able to work as part of a team to lead troubleshooting and resolve complex network issues.

• Excellent written and verbal communication skills.

PREFERRED QUALIFICATIONS:

• Certified Cisco Network Professional (CCNP) or equivalent.

• Demonstrated experience in Linux shell scripting.

• Experience with GitLab source control and CI/CD pipeline development.

• Experience using JIRA and Confluence.

• Experience managing trouble tickets and escalations.

• Experience with NetSecOps technologies including salt, git, Ansible, Terraform, Puppet and network element managers.

• Network Performance Management (SNMP, NETMON, LiveAction)

• Demonstrated experience in any two or more of the following: Netflow, Elastic, Kafka, Grafana, Prometheus, or Nexus Repo.

• Demonstrate expertise in design and improvement of complex and geographically diverse enterprise networks.

• Expert knowledge of US Army security requirements for network infrastructure.

Original Posting:

June 6, 2025

For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:

Pay Range $89,700.00 - $162,150.00

The Leidos pay range for this job level is a general guideline