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, 2026For 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.
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.
Skills Required
- Bachelor's degree and 8 years' experience or an associate's degree and 10 years' experience
- Experience with operational and security hardening configuration for firewall solutions
- Hands-on experience with Palo Alto Panorama for centralized management of PAN-OS firewalls
- Demonstrated experience with networking and switching protocols and infrastructure services
- Familiarity with ticketing systems and strong documentation practices
- U.S. Citizen who can obtain a Department of War (DoW) Secret clearance
- Cisco Certified CCNA
- Obtain baseline 8140 certification (IAT Level II) such as CCNA-Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP
- Troubleshoot complex network issues and perform incident analysis with root cause documentation
Leidos Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Leidos and has not been reviewed or approved by Leidos.
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Healthcare Strength — Healthcare coverage is described as comprehensive, with multiple plan options, low office-visit copays in some plans, and access to mental health and wellness support tools. The availability of HSA/FSA options and employer contributions is positioned as a meaningful part of the total package.
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Retirement Support — Retirement benefits are framed as a strong component of total rewards, highlighted by a 401(k) match and immediate vesting in the standard package. The Employee Stock Purchase Plan is also presented as an additional long-term wealth-building feature.
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Wellbeing & Lifestyle Benefits — Wellbeing and lifestyle supports extend beyond core insurance, including wellness programs, fitness-related stipends, and assistance resources. Work flexibility and related perks are also included as part of the broader rewards experience.
Leidos Insights
What We Do
We Are Leidos For 50 years we have been tackling some of the biggest problems that face our nation and our world. OUR MISSION Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020. Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®. Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos. Your most important work is ahead.
