The Multi Domain Solutions Division at Leidos is looking for a Senior Network Engineer to support a fast-paced program with the Air Force Life Cycle Management Center, deploying and managing a complex network spanning multiple customer sites and the cloud. We are seeking a skilled Senior Network Engineer to design, procure, and install network systems that meet Department of Defense (DoD) specifications. In this role, you will develop network architectures, collaborate with procurement teams to source hardware and software, and oversee the installation and configuration of network equipment such as TACLANES, routers, switches, and firewalls. You will conduct testing to ensure functionality and security compliance, maintain accurate documentation, and provide technical support to team members and end-users. In addition, this position will support the management and configuration of COMSEC equipment and be a member of the Leidos team providing 24x7 monitoring of customer networks in the Leidos network operations center.  *This position will require the ability to work a rotating shift*   Primary Responsibilities:<ul><li>Lead the development of detailed network designs for hardware and software that align with Department of Defense (DoD) standards. </li><li>Collaborate with procurement teams to identify and source hardware and software that meet project specifications. </li><li>Oversee the installation and configuration of equipment, including routers, switches, firewalls, and servers. </li><li>Conduct thorough testing of network systems to ensure functionality, performance, and security compliance. </li><li>Troubleshoot and resolve issues that arise during installation and testing phases. </li><li>Maintain accurate documentation of network configurations, installations, and changes. </li><li>Develop and update network diagrams and other relevant technical documents. </li><li>Work closely with engineers, project managers, and stakeholders to ensure successful project delivery. </li><li>Maintain accurate inventory of COMSEC material, including keying equipment and cryptographic keys, ensuring compliance with security protocols. </li><li>Lead the installation, operation, and maintenance of COMSEC equipment and software, ensuring they meet security standards. </li><li>Provide technical support and guidance to team members and end-users. </li><li>Stay updated on DoD policies and best practices related to network security and design. </li><li>Implement security measures to protect network infrastructure and data. </li></ul>Basic Qualifications:<ul><li>US Citizen with at least a Top Secret Clearance is required. With the ability to obtain a SCI prior to your start date. </li><li>Bachelor’s degree with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional experience can be considered in lieu of a degree.</li><li>Strong knowledge of protocols, security standards, and design principles for OSI Layers 1-4. </li><li>Strong experience with installation and configuration of physical networking equipment and Local Area Networks (LANs). </li><li>Strong experience with the design and deployment of Wide Area Networks (WANs) using Virtual Private Networking (VPN) technologies.</li><li>Experience with cloud networking technologies, especially with Microsoft Azure (vNETs, VPN Gateway, Virtual WAN, Express Routes, Azure Firewall, etc).</li><li>Experience configuring and managing COMSEC devices.  </li><li>Experience in interpreting and contextualizing network management and troubleshooting tools and technologies, such as ICMP, SNMPv3, and Syslog. </li><li>Relevant certifications such as CCNA, CCNP, CCIE, or other specialization certifications to meet DoD 8140 requirements (e.g. JNCIA, PCNSA, AZ-700, CISSP, etc). </li><li>Excellent problem-solving and analytical skills. </li></ul>Preferred Qualifications:<ul><li>Experience working on DoD networks, especially on classified and operational networks. </li><li>Experience with the operation and employment of cryptographic devices to facilitate secure networking across a Virtual Private Network (VPN).  </li><li>Experience configuring virtual private networks (VPNs) using one or more of the following technologies: Juniper Secure Connect, Azure VPN Gateway, MPLS, IPsec VPN, or other site-to-site VPN technologies. </li><li>Experience remotely managing networks through Infrastructure as Code (IaC) and Configuration as Code (CaC). </li><li>Currently hold NSA COMSEC Manager Course qualification. </li><li>Experience with network performance monitoring and optimization. </li><li>Strong understanding of cybersecurity practices and risk management, especially at OSI layers 1-3. </li><li>Previous experience in a leadership or mentoring role within a technical team. </li><li>Familiarity with emerging technologies and trends in network infrastructure. </li></ul><h2></h2><h2></h2><h2>Original Posting:</h2>July 3, 2025For 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.<h2>Pay Range:</h2>Pay Range $104,650.00 - $189,175.00The 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 Holdings

Senior Network Engineer

Leidos Holdings