Senior Network Engineer

Leidos currently has an opening for a Senior Network Engineer to support a Department of War customer in the Washington DC metro area.  This is a great opportunity to work with an elite team of network professionals to maintain a secure environment for critical systems.  Bring your own experience and work with our team to teach and learn while building, maintaining, and supporting our customer environments.

Primary Responsibilities

• Integrate compute, storage, security, and cloud access into network architectures.

• Work directly with customers to refine and finalize designs.

• Mentor junior staff in skill development in network engineering and design.

• Collaborate and work with team members to assist in skill development and team growth.

• Work with program management, developing solutions for future customer engagements, including meeting with customers to understand requirements and develop solutions.

• Troubleshoot complex network issues and assist with the development of solutions.

• Perform incident analysis to determine possible causes and potential fix. Document Root Cause and recommendations to prevent future occurrences.

• Design and implement firewall policies to secure the organization's network and protect against external and internal threats.

• Design, maintain, update, and document VPN connectivity to partners and outside vendors.

• Troubleshoot escalated network and security issues ranging from hardware to operating systems/applications/permissions/user profile related issues.

• Monitor firewall logs and alerts to identify and resolve security incidents.

• Work in hybrid multi-location operations team administering existing production network.

• Assist in creating automation and process improvements toward greater efficiency, reduced incidents, and proactive systems management.

• Support tickets and manage incidents, service requests, and problems through their full life-cycle.

• Provide health and performance reporting and take appropriate actions based on trends in data.

• Document status updates and communicate to necessary parties.

• Document troubleshooting steps and knowledge articles for team members and other teams.

Basic Qualifications

• Bachelor's degree and 8 years’ experience or an associate’s degree and 10 years’ experience

• Experienced with operational and security hardening configuration for firewall solutions

• Hands-on experience with Palo Alto Panorama for centralized management of PANOS firewalls

• Demonstrated experience with networking and switching protocols and infrastructure services

• Familiar with ticketing systems and the value of good documentation

• A US Citizen who can obtain a DoW Secret clearance

• Cisco Certified CCNA

• Obtain a baseline 8140 certification [(IAT Level II) CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP]

Preferred Qualifications

• Bachelor of Science in IT Related Field and 10+ years of experience

• Palo Alto Next-Gen Firewall

• Cisco Certified CCNP

• DoD secret clearance

• Security+ CE certification

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:

June 8, 2026

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.