Senior Network Support Engineer_Remote

00100 LEIDOS, INC.; United States; Remote; USD 92,000 - 167,000; Full time

Job summary

Leidos is seeking a Senior Network Support Engineer to support the Army Global Unified Network (AGUN) program. This remote US-based role requires an Active Secret clearance, DoD IAT Level II certification, and hands-on Cisco SD-WAN experience to ensure 24/7 network availability, performance, and security across a geographically dispersed environment.

You will troubleshoot complex incidents, configure SD-WAN, manage ITSM tickets, and collaborate with global teams while supporting VMware, RHEL,

Qualifications

• Bachelor's degree with 8+ years of relevant experience, or a master's degree with 6+ years of relevant experience.
• 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.

Responsibilities

• 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.

Skills

Cisco SD-WAN

SDN

VMware virtualization

RHEL

NetFlow

Elastic

Kafka

Grafana

Prometheus

Jira

Confluence

Git

Ansible

Terraform

Puppet

Salt

GitLab

Citrix NetScaler

BGP

TCP/UDP

IPSec

VPNs

LAN/WAN

Firewalls

Education

Bachelor's degree with 8+ years of relevant experience, or a master's degree with 6+ years of relevant experience

Active Secret clearance

DoD IAT Level II certification (Security+ or equivalent)

CCNP certification or equivalent

Tools

InfoVista

Job description

Work Location: Remote – U.S. Based* Program: Army Global Unified Network (AGUN) Clearance Required: Active Secret Certification: DoD IAT Level II (Security+ or equivalent) Help Keep the U.S. Army Connected Worldwide! *Please be advised that during the interview, yo will be required to keep your camera on, and your interviewer will be taking your picture for identification purposes, if an offer letter is extended to you.

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. In this role, you'll provide hands‑on network operations, troubleshooting, and engineering support across a complex, geographically dispersed environment. You'll work with advanced networking technologies, resolve critical incidents, support network migrations, and help improve network performance and security. We're looking for a strong Network Engineer with hands‑on Cisco SD-WAN experience who can troubleshoot complex network issues and work independently in a remote environment.

What You’ll Do

• 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.

What We’re Looking For

• 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 / PrimeJuniper NetworksPalo Alto NetworksDell NetworkingJunos SpaceAppGate.
• 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.

Why Join Leidos?

At Leidos, you'll have the opportunity to work with advanced networking technologies while supporting a mission that directly impacts the U.S. Army's global operations. You'll collaborate with experienced network engineers, solve complex technical challenges, and help keep critical military communications secure and operational. If you're an experienced Network Engineer with Cisco SD-WAN expertise who enjoys solving complex network challenges, we want to hear from you!

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: 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.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers.

• Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.
• More details are available here.

Securing Your Data Leidos will never ask you to provide payment‑related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.