Leidos
Overview
Leidos has a new and exciting opportunity for a Mid/Sr Network Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our team focuses on Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Leidos offers competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and more. Join us and make a difference in National Security! Leidos is looking for a Mid-Senior Level Network Engineer to join a highly performing agile team using the Scaled Agile Framework (SAFe) methodology to support a large, complex, fast-paced program. The program follows DEVOPS practices with robust development, test and production environments, Test Driven Development (TDD), and test automation tools, providing system engineering, development, test, integration and operational support for a program that injects new technology and adds advanced capabilities while sustaining an ongoing mission and operational system. Responsibilities
The selected candidate will participate in the creation and ongoing maintenance of network documentation ensuring that clear, concise, and accurate information is readily available to assist with incident resolution. They will provide enterprise network support, working closely with IT service provider teams to ensure customer requirements are considered and supported by the evolving LAN/WAN architecture. Responsibilities include executing the process for managing information assurance vulnerability alerts (IAVAs) and system security scanning for equipment suites in accordance with the System Security Plans to rapidly and accurately identify and remediate IAVAs. The candidate will propose, design, test, and install capabilities that are new to the environment, and will oversee the development and maintenance of technical data such as rack elevations, installation instructions, and other as-built designs. Basic Qualifications
Bachelor’s degree in engineering or a related field and at least 8 years of related experience. Additional experience may be substituted for a degree. Must have at least 5 years of in-depth experience with hardware/software from Cisco Systems. Must have at least 5 years of in-depth experience with hardware/software from Palo Alto Systems. Must have experience providing analysis, root cause diagnosis, and troubleshooting for routers, switches, and firewalls. Must have an in-depth understanding of IP subnetting, VLANs and the OSI layers. Must have in-depth experience with various vendor networking products (switches, routers, firewalls, etc.). Must have a solid understanding of different physical mediums such as copper and single mode/multimode fiber and physical connector types (RJ11, RJ45, LC, SC, ST, etc.). Must be able to respond to operational issues while off duty, on an on-call basis. Some travel will be required. Clearance Required: Must have TS/SCI with Polygraph. Preferred Qualifications
Experience with KG-175 and/or KG-250/KG-255 configuration and deployment. Experience with VINE/GEM One. Experience with SolarWinds or other similar network monitoring applications, configuration and monitoring tools. Experience with VMWare 7 or higher usage and network configuration. Experience with any or all of the following technologies: Cisco, Nexus/Catalyst/ASA/ISR/XE/ASA/Firepower, ISE, McAfee Sidewinder, Palo Alto, Juniper, F5, IPSEC, NAT, SCP, TFTP, BGP, vPC. Experience with Cisco Call Manager server configuration and troubleshooting with integration of Instant Messaging (IMP), Cisco Meeting Server, Jabber and Unity Voicemail; Managing and upgrading the Cisco Unified Communications and Collaboration infrastructure – On Premise. Experience with OLT/PON. Experience with TCP MTU/MSS adjustments and a basic understanding. Understanding of security using technologies such as reverse proxies, cross domain solutions and load balancers. At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. We look forward to learning more about you – apply today. At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.” If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in. Original Posting
September 11, 2025 Pay Range
Pay Range $89,700.00 - $162,150.00
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Leidos has a new and exciting opportunity for a Mid/Sr Network Engineer in our National Security Sector's (NSS) Cyber & Analytics Business Area (CABA). Our team focuses on Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management. Leidos offers competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and more. Join us and make a difference in National Security! Leidos is looking for a Mid-Senior Level Network Engineer to join a highly performing agile team using the Scaled Agile Framework (SAFe) methodology to support a large, complex, fast-paced program. The program follows DEVOPS practices with robust development, test and production environments, Test Driven Development (TDD), and test automation tools, providing system engineering, development, test, integration and operational support for a program that injects new technology and adds advanced capabilities while sustaining an ongoing mission and operational system. Responsibilities
The selected candidate will participate in the creation and ongoing maintenance of network documentation ensuring that clear, concise, and accurate information is readily available to assist with incident resolution. They will provide enterprise network support, working closely with IT service provider teams to ensure customer requirements are considered and supported by the evolving LAN/WAN architecture. Responsibilities include executing the process for managing information assurance vulnerability alerts (IAVAs) and system security scanning for equipment suites in accordance with the System Security Plans to rapidly and accurately identify and remediate IAVAs. The candidate will propose, design, test, and install capabilities that are new to the environment, and will oversee the development and maintenance of technical data such as rack elevations, installation instructions, and other as-built designs. Basic Qualifications
Bachelor’s degree in engineering or a related field and at least 8 years of related experience. Additional experience may be substituted for a degree. Must have at least 5 years of in-depth experience with hardware/software from Cisco Systems. Must have at least 5 years of in-depth experience with hardware/software from Palo Alto Systems. Must have experience providing analysis, root cause diagnosis, and troubleshooting for routers, switches, and firewalls. Must have an in-depth understanding of IP subnetting, VLANs and the OSI layers. Must have in-depth experience with various vendor networking products (switches, routers, firewalls, etc.). Must have a solid understanding of different physical mediums such as copper and single mode/multimode fiber and physical connector types (RJ11, RJ45, LC, SC, ST, etc.). Must be able to respond to operational issues while off duty, on an on-call basis. Some travel will be required. Clearance Required: Must have TS/SCI with Polygraph. Preferred Qualifications
Experience with KG-175 and/or KG-250/KG-255 configuration and deployment. Experience with VINE/GEM One. Experience with SolarWinds or other similar network monitoring applications, configuration and monitoring tools. Experience with VMWare 7 or higher usage and network configuration. Experience with any or all of the following technologies: Cisco, Nexus/Catalyst/ASA/ISR/XE/ASA/Firepower, ISE, McAfee Sidewinder, Palo Alto, Juniper, F5, IPSEC, NAT, SCP, TFTP, BGP, vPC. Experience with Cisco Call Manager server configuration and troubleshooting with integration of Instant Messaging (IMP), Cisco Meeting Server, Jabber and Unity Voicemail; Managing and upgrading the Cisco Unified Communications and Collaboration infrastructure – On Premise. Experience with OLT/PON. Experience with TCP MTU/MSS adjustments and a basic understanding. Understanding of security using technologies such as reverse proxies, cross domain solutions and load balancers. At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. We look forward to learning more about you – apply today. At Leidos, we don’t want someone who "fits the mold"—we want someone who melts it down and builds something better. This is a role for the restless, the over-caffeinated, the ones who ask, “what’s next?” before the dust settles on “what’s now.” If you’re already scheming step 20 while everyone else is still debating step 2… good. You’ll fit right in. Original Posting
September 11, 2025 Pay Range
Pay Range $89,700.00 - $162,150.00
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