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 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. Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit 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 View email address on click.appcast.io. 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.