[Hiring] Senior Network Support Engineer @Leidos

Role Description

Leidos is seeking an experienced Senior Network Support Engineer to support the Army Global Unified Network (AGUN) program. This is an exciting opportunity to help maintain, secure, and modernize the Army's global enterprise network, ensuring reliable communications and mission readiness around the world.

• Support the Army's global network operations, ensuring 24/7/365 network availability, performance, and security.
• Troubleshoot and resolve complex network incidents, outages, and connectivity issues.
• Configure, maintain, and support Cisco SD-WAN and enterprise networking technologies.
• Execute approved network configuration changes, security updates, and remediation activities.
• Manage incident and service request tickets using Jira Service Desk or other ITSM tools.
• Monitor network performance, capacity, and reliability and recommend improvements.
• Support network migrations, system integrations, cutovers, and modernization initiatives.
• Work remotely while collaborating with geographically dispersed engineering teams during incident-response bridges, meetings, and troubleshooting activities.
• Provide timely operational updates to the Global Cyber Center (GCC) and program leadership.
• Support network environments utilizing VMware, Red Hat Enterprise Linux, and InfoVista.
• Participate in a 24/7 on-call rotation, including nights, weekends, holidays, and mission-driven surge support.

Qualifications

• Bachelor's degree with 8+ years of relevant experience, or a master's degree with 6+ years of relevant experience. Additional applicable experience may be considered in place of a degree.
• Current Active Secret security clearance.
• DoD IAT Level II certification (Security+ or equivalent) required before starting.
• Hands-on experience supporting Cisco SD-WAN environments.
• Knowledge of Software Defined Networking (SDN).
• Experience with VMware virtualization and Red Hat Enterprise Linux (RHEL).
• Hands-on experience with InfoVista network performance management tools.
• Experience with at least two of the following: Cisco DNA Center / Prime, Juniper Networks, Palo Alto Networks, Dell Networking, Junos Space, AppGate.
• Strong understanding of LAN/WAN, BGP, TCP/UDP, IPSec, VPNs, Layer 2/Layer 3 routing, and firewalls.
• Familiarity with SFTP, SSH, SCP, SNMP, and NTP.
• Experience using ITSM ticketing tools for incident and service request management.
• Strong troubleshooting, communication, and problem-solving skills.
• Ability to work independently while collaborating with remote technical teams.
• Flexibility to participate in a 24/7 on-call rotation and respond to mission-critical incidents.

Preferred Qualifications

• CCNP certification or equivalent.
• Experience with Linux shell scripting.
• Experience using GitLab, CI/CD pipelines, Jira, and Confluence.
• Knowledge of network automation tools such as Ansible, Terraform, Puppet, Salt, and Git.
• Experience with network monitoring tools such as SNMP, NETMON, and LiveAction.
• Experience with at least two of the following: NetFlow, Elastic, Kafka, Grafana, Prometheus, or Nexus Repository.
• Experience supporting large, geographically dispersed enterprise networks.
• Familiarity with U.S. Army network security requirements and DoD network operations.

Benefits

• Opportunity to work with advanced networking technologies.
• Collaboration with experienced network engineers.
• Engagement in solving complex technical challenges.
• Contribution to keeping critical military communications secure and operational.

Original Posting

November 5, 2026

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: $92,300.00 - $166,850.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.