{"id":2929651,"url":"https://alion.io/job/leidos-senior-network-engineer-15","title":"Senior Network Engineer","company":{"id":7791,"name":"Leidos","domain":"leidos.com","url":"https://alion.io/company/leidos","size_band":"5000+","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Workday","truth_index":{"grade":"B","score":78,"open_postings":253,"ghost_share":0.004,"stale_share":0.862,"repost_share":0.008,"time_to_fill_p50_days":27,"computed_at":"2026-10-24T06:02:35Z"}},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Lorton, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":107900,"max":195050,"currency":"USD","period":"year","gross":null,"usd_annual":195050},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"Configuration Management","optional":false},{"name":"Defense in Depth","optional":false},{"name":"MPLS","optional":false},{"name":"OSPF","optional":false},{"name":"TCP/IP","optional":false},{"name":"Verification & Validation","optional":false},{"name":"VPN","optional":false},{"name":"Zero Trust","optional":false},{"name":"Ansible","optional":true},{"name":"Azure","optional":true},{"name":"Least Privilege","optional":true},{"name":"Python","optional":true},{"name":"Rest API","optional":true},{"name":"Splunk","optional":true},{"name":"Terraform","optional":true}],"status":"live","first_seen_at":"2026-10-20T14:23:04Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-22T02:56:46Z","board_verified":false,"closed_at":null,"days_open":4,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":4},"description":"Senior Network Engineer\nLorton, VA - On-Site Required\nTS/SCI\nThe Defense sector at Leidos is seeking an experienced Senior Network Engineer to support a fast-paced Department of Defense (DoD) program supporting the Air Force Life Cycle Management Center (AFLCMC). The position supports the engineering, deployment, modernization, and sustainment of network infrastructure across multiple customer locations.\nThe Senior Network Engineer will serve as a senior technical contributor responsible for translating mission and technical requirements into secure, resilient, and supportable network solutions. They will participate throughout the network engineering lifecycle, including requirements analysis, architecture and design, hardware/software selection, procurement support, staging, implementation, testing, troubleshooting, documentation, and operational transition. The successful candidate will have hands-on experience with enterprise routing, switching, firewalls, WAN technologies, secure communications, and network management in DoD or similarly regulated environments.\nThis position does require the ability to work 100% on-site at our location in Lorton, VA.\nPrimary responsibilities:\nDevelop detailed network architectures and engineering designs aligned with DoD, Air Force, cybersecurity, availability, and mission requirements.\nTranslate operational and technical requirements into network designs, implementation plans, equipment specifications, Bills of Materials (BOMs), and technical documentation.\nDesign, configure, deploy, and troubleshoot enterprise network infrastructure, including routers, Layer 2/Layer 3 switches, firewalls, VPN gateways, and associated network services.\nEngineer LAN and WAN solutions incorporating technologies such as Ethernet, VLANs, trunking, Spanning Tree Protocol (STP), link aggregation, QoS, access control lists (ACLs), and redundant/high-availability architectures.\nConfigure and troubleshoot routing technologies and protocols such as BGP, OSPF, and static routing in enterprise and multi-site environments.\nDesign and support secure WAN connectivity using technologies such as IPsec, site-to-site VPNs, MPLS, and other DoD-approved transport solutions.\nSupport implementation and troubleshooting of network security technologies, including firewalls, network segmentation, access controls, secure management interfaces, and encrypted communications.\nPerform packet-level and protocol analysis to identify network performance, connectivity, routing, security, and interoperability issues.\nUtilize network monitoring and troubleshooting technologies such as SNMPv3, Syslog, ICMP, NetFlow, packet capture, and network management platforms to identify and resolve operational issues.\nDevelop test plans and conduct verification and validation of network solutions to confirm functionality, performance, resiliency, interoperability, and cybersecurity compliance.\nConduct pre-deployment staging, configuration validation, and implementation readiness activities prior to installation at customer locations.\nTroubleshoot complex network issues during deployment, testing, and operational sustainment and perform root-cause analysis when required.\nDevelop and maintain network documentation, including logical and physical network diagrams, IP address plans, configuration baselines, interface documentation, rack elevations, cable diagrams, and as-built documentation.\nMaintain configuration control and document network changes in accordance with established change and configuration management processes.\nSupport DoD cybersecurity requirements, including applicable Security Technical Implementation Guides (STIGs), security controls, vulnerability remediation, and Risk Management Framework (RMF) activities.\nCollaborate with cybersecurity engineers to ensure network infrastructure meets applicable DoD security and Zero Trust requirements.\nProvide technical leadership and guidance to junior engineers and field personnel during network installation, integration, troubleshooting, and operational turnover.\nSupport technical reviews, engineering meetings, site surveys, deployment planning, and customer technical discussions.\nProvide technical input to procurement activities and evaluate network hardware/software against technical, security, interoperability, lifecycle, and mission requirements.\nMaintain awareness of emerging network, cybersecurity, cloud, automation, and DoD enterprise networking technologies and recommend improvements where appropriate.\nBasic Qualifications:\nUS Citizen with an active Top Secret clearance with the ability to obtain and main a SCI prior to your start date.\nBachelor's degree with 8+ years of experience or a Master’s degree with 6+ years of experience. Additional experience may be considered in lieu of a degree.\nDemonstrated experience designing, implementing, configuring, and troubleshooting enterprise network infrastructure.\nStrong understanding of the OSI and TCP/IP models and network protocols associated with Layers 1-4.\nHands-on experience configuring enterprise routers and switches.\nExperience implementing and troubleshooting LAN technologies, including VLANs, 802.1Q trunking, STP/RSTP, link aggregation, and Layer 3 switching.\nExperience with IP addressing, subnetting, route selection, access control lists, and network segmentation.\nWorking knowledge of dynamic routing protocols such as BGP and OSPF.\nExperience designing, deploying, or supporting WAN connectivity across geographically separated locations.\nExperience implementing or supporting IPsec/site-to-site VPN technologies.\nExperience using network monitoring and troubleshooting technologies such as ICMP, SNMPv3, Syslog, packet captures, and network management platforms.\nExperience troubleshooting complex network connectivity, routing, performance, and configuration issues.\nAbility to develop and maintain detailed technical documentation and network diagrams.\nUnderstanding of network security principles, secure management practices, segmentation, encryption, and defense-in-depth.\nStrong analytical, troubleshooting, written communication, and technical documentation skills.\nPreferred Qualifications:\nUS Citizen with an active TS/SCI security clearance.\nExperience supporting Department of Defense, U.S. Air Force, Intelligence Community, or other highly regulated government environments.\nExperience with Cisco and/or Juniper enterprise routing and switching platforms.\nExperience with next-generation firewall technologies such as Cisco, Palo Alto Networks, Fortinet, or equivalent enterprise platforms.\nExperience designing or supporting high-availability network architectures, redundant WAN connectivity, and resilient network services.\nExperience with DoD STIGs, RMF, NIST security controls, vulnerability management, and configuration compliance.\nUnderstanding of DoD Zero Trust principles, including network segmentation, identity-aware access, least privilege, continuous monitoring, and secure access architectures.\nExperience with secure communications and operation or integration of DoD cryptographic devices, such as TACLANE or equivalent Type 1 encryption technologies.\nExperience with Cisco Secure Client/AnyConnect, Azure VPN Gateway, MPLS, IPsec, GRE, or similar enterprise WAN/VPN technologies.\nWorking knowledge of cloud networking, particularly Microsoft Azure, including VNets, subnets, Network Security Groups (NSGs), routing, VPN gateways, and hybrid connectivity.\nFamiliarity with network automation and Infrastructure as Code technologies such as Python, Ansible, Terraform, REST APIs, or similar tools.\nExperience with network monitoring and performance-management platforms such as SolarWinds, Cisco network management platforms, Splunk, or equivalent technologies.\nDemonstrated experience leading technical activities or mentoring junior network engineers.\nRelevant industry certifications such as CCNP Enterprise, CCNP Security, CCIE, JNCIP/JNCIE, PCNSE, AZ-700, Security+, CISSP, or equivalent certifications.\nDABAOPP1\nIf 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.\nOriginal Posting:\nOctober 20, 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.\nPay Range:\nPay Range $107,900.00 - $195,050.00The 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.","description_format":"text","description_chars":9121,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":true,"languages":[]},"benefits":["Equity"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Network Security","National Security","C4ISR","Engineering Services"],"lifecycle":[{"event":"open","at":"2026-10-20T14:23:04Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 50 · green card filings: 24","filings_12m":50,"filings_prev_12m":58,"green_card_filings_12m":24,"median_offered_wage_usd":124257,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)","US Department of Labor: PERM disclosure data (green cards)"],"filings_for_role_12m":0}],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":0.9,"p_active":0.417,"p_room":1,"age_days":3,"expected_fill_days":27,"reasons":["conf:51","stale_co","evergreen","wave","velocity","win:early","comp:brand"],"computed_at":"2026-10-24T06:02:35Z"},"pay":{"stated_usd_annual":195050,"is_top_pay":true},"html_url":"https://alion.io/job/leidos-senior-network-engineer-15","json_url":"https://alion.io/job/leidos-senior-network-engineer-15.json","meta":{"generated_at":"2026-10-24T18:24:59Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":26805,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-25T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":7791},"rest":"https://alion.io/mcp/rest/get_company?id=7791"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fleidos-senior-network-engineer-15"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fleidos-senior-network-engineer-15"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fleidos-senior-network-engineer-15"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/leidos-senior-network-engineer-15\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fleidos-senior-network-engineer-15"}]}