{"schemaVersion":"jobsearcher.job.v1","id":"76bbc2effdc16743a3a0aed3","url":"https://jobsearcher.com/jobs/76bbc2effdc16743a3a0aed3","canonicalUrl":"https://jobsearcher.com/jobs/76bbc2effdc16743a3a0aed3","title":"Sr. Network Engineer","description":"Overview\nAs a Network Engineer at Leidos supporting the National Digital Exploitation & OSINT Center (NDOC), you will design and maintain scalable, secure data center and enterprise networks across on-site and interconnecting environments. You will implement spine-leaf and fabric architectures, manage Cisco ACI, and ensure high availability and security for mission-critical operations. You’ll lead incident resolution, continuity planning, and cross-team collaboration to meet security and mission requirements. This role offers hands-on leadership, modernization, and opportunities to influence network resilience and performance.\n\nResponsibilitiesDesign, implement, and maintain data center and enterprise network architectures (spine-leaf, fabric, virtualization)Plan and sustain LAN/WAN connectivity between on-premises, cloud, and external mission networksConfigure and maintain Cisco ACI, routers, switches, firewalls, and load balancersManage performance across servers, storage, hypervisors, and data center interconnectsUtilize network monitoring and ITSM tools (ServiceNow, SolarWinds, NetBox, PRTG) to track health and incidentsLead troubleshooting and incident resolution for complex network and data center issuesDevelop contingency and continuity plans to minimize downtimeOversee cabling standards, patch management, and structured wiringImplement segmentation, performance tuning, and latency optimizationCoordinate with IT, Systems Engineering, Cybersecurity, and Applications teams to ensure security/complianceManage and document incidents and changes via ServiceNow, ensuring SLA adherenceProvide status reports and metrics to leadershipLead or support network modernization and data center consolidationEvaluate emerging network technologies to improve efficiency and cybersecuritySupervise and mentor network engineers and techniciansAssist leadership with scheduling and coverage for support activitiesEvaluate resumes and participate in candidate interviewsManage subordinates' performance and timesheetsMaintain after-hours or on-call support as needed\nKey requirementsProven experience designing and maintaining data center networks with focus on scalability, redundancy, and securityHands-on with Cisco ACI, Nexus, and Catalyst platforms (config, monitoring, troubleshooting)Strong knowledge of TCP/IP, DNS, DHCP, OSPF, BGP, VLANs, HSRP, SNMP, multicastProficiency with ServiceNow, SolarWinds, and NetBoxKnowledge of network security: firewall rules, ACLs, VPN, secure remote accessFamiliarity with asset lifecycle, capacity planning, and hardware procurementExperience leading teams and managing shifting prioritiesExcellent written and verbal communication; ability to brief leadershipDoD 8140/8570.11- IAT Level II certification requirements (Security+ CE, CCNA Security, GSEC, or SSCP) with valid CE certificationUS Citizenship required; TS/SCI with Poly or willing to obtain polyBachelor’s degree and 8+ years of relevant experienceActive CCNA/CCNP/CCIE preferred (if listed)leadershipcommunicationcollaborationCisco ACINexusCatalyst","company":"Leidos","rawCompany":"leidos","city":"Silver Spring","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-09-15T04:10:49.120Z","occupations":[{"code":"15-1241.00","title":"Computer Network Architects","slug":"computer-network-architects"},{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541513","title":"Computer Facilities Management Services","slug":"computer-facilities-management-services"},{"code":"928110","title":"National Security","slug":"national-security"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Sr. Network Engineer","description":"Overview\nAs a Network Engineer at Leidos supporting the National Digital Exploitation & OSINT Center (NDOC), you will design and maintain scalable, secure data center and enterprise networks across on-site and interconnecting environments. You will implement spine-leaf and fabric architectures, manage Cisco ACI, and ensure high availability and security for mission-critical operations. You’ll lead incident resolution, continuity planning, and cross-team collaboration to meet security and mission requirements. This role offers hands-on leadership, modernization, and opportunities to influence network resilience and performance.\n\nResponsibilitiesDesign, implement, and maintain data center and enterprise network architectures (spine-leaf, fabric, virtualization)Plan and sustain LAN/WAN connectivity between on-premises, cloud, and external mission networksConfigure and maintain Cisco ACI, routers, switches, firewalls, and load balancersManage performance across servers, storage, hypervisors, and data center interconnectsUtilize network monitoring and ITSM tools (ServiceNow, SolarWinds, NetBox, PRTG) to track health and incidentsLead troubleshooting and incident resolution for complex network and data center issuesDevelop contingency and continuity plans to minimize downtimeOversee cabling standards, patch management, and structured wiringImplement segmentation, performance tuning, and latency optimizationCoordinate with IT, Systems Engineering, Cybersecurity, and Applications teams to ensure security/complianceManage and document incidents and changes via ServiceNow, ensuring SLA adherenceProvide status reports and metrics to leadershipLead or support network modernization and data center consolidationEvaluate emerging network technologies to improve efficiency and cybersecuritySupervise and mentor network engineers and techniciansAssist leadership with scheduling and coverage for support activitiesEvaluate resumes and participate in candidate interviewsManage subordinates' performance and timesheetsMaintain after-hours or on-call support as needed\nKey requirementsProven experience designing and maintaining data center networks with focus on scalability, redundancy, and securityHands-on with Cisco ACI, Nexus, and Catalyst platforms (config, monitoring, troubleshooting)Strong knowledge of TCP/IP, DNS, DHCP, OSPF, BGP, VLANs, HSRP, SNMP, multicastProficiency with ServiceNow, SolarWinds, and NetBoxKnowledge of network security: firewall rules, ACLs, VPN, secure remote accessFamiliarity with asset lifecycle, capacity planning, and hardware procurementExperience leading teams and managing shifting prioritiesExcellent written and verbal communication; ability to brief leadershipDoD 8140/8570.11- IAT Level II certification requirements (Security+ CE, CCNA Security, GSEC, or SSCP) with valid CE certificationUS Citizenship required; TS/SCI with Poly or willing to obtain polyBachelor’s degree and 8+ years of relevant experienceActive CCNA/CCNP/CCIE preferred (if listed)leadershipcommunicationcollaborationCisco ACINexusCatalyst","datePosted":"2026-09-15T04:10:49.120Z","dateModified":"2026-09-15T04:10:49.120Z","hiringOrganization":{"@type":"Organization","name":"Leidos","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"Silver Spring","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"76bbc2effdc16743a3a0aed3"},"url":"https://jobsearcher.com/jobs/76bbc2effdc16743a3a0aed3"}}