{"id":2490642,"url":"https://alion.io/job/agil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3","title":"Senior Network Engineer - Agil3 Technology Solutions (A3T)","company":{"id":4418733,"name":"Agil3 Technology Solutions","domain":"agil3tech.com","url":"https://alion.io/company/agil3tech","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"JazzHR","truth_index":null},"role":"Networking","role_family":"Networking","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Quantico, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":115000,"max":140000,"currency":"USD","period":"year","gross":null,"usd_annual":140000},"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Azure","optional":false},{"name":"DHCP","optional":false},{"name":"DNS","optional":false},{"name":"TCP/IP","optional":false},{"name":"VLAN","optional":false},{"name":"ITIL","optional":true},{"name":"ITSM","optional":true},{"name":"ServiceNow","optional":true},{"name":"VPN","optional":true}],"status":"live","first_seen_at":"2026-10-14T02:06:34Z","employer_posted_date":"2026-10-14","last_verified_at":"2026-10-19T12:27:35Z","board_verified":true,"closed_at":null,"days_open":5,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":5},"description":"Agil3 Technology Solutions (A3T) is seeking an experienced Senior Network Engineer to provide enterprise network engineering, administration, sustainment, and Tier III technical support for the U.S. Government IT environment.\nThe Senior Network Engineer will be responsible for designing, configuring, maintaining, monitoring, securing, documenting, and troubleshooting enterprise network infrastructure supporting customer operations. The position supports geographically dispersed locations and works closely with Systems Engineering, Systems Administration, Cloud Engineering, Cybersecurity, and Technical Support personnel.\nKey Responsibilities\nEngineer, configure, administer, maintain, monitor, and troubleshoot enterprise LAN, WAN, and wireless network infrastructure.\nConfigure and maintain Cisco network equipment and associated network-management technologies.\nManage and troubleshoot switches, routers, wireless infrastructure, network interfaces, VLANs, IP addressing, and related network services.\nSupport Internet Protocol Address Management (IPAM) and maintain accurate IP address and VLAN assignments.\nConfigure and maintain network access and connectivity supporting users, servers, applications, cloud services, and enterprise systems.\nSupport and troubleshoot DISA and commercial telecommunications circuits, including coordination with external service providers when necessary.\nOpen, manage, track, and resolve technical support cases with Cisco TAC and other network-equipment vendors.\nDiagnose complex network outages, degraded performance, packet loss, connectivity failures, routing problems, wireless issues, and other infrastructure incidents.\nMonitor network availability, utilization, capacity, performance, and security and proactively identify potential service degradation.\nPerform advanced root-cause analysis of network and infrastructure incidents and recommend corrective actions.\nInstall and implement network device software, firmware, patches, and security updates in accordance with applicable cybersecurity directives.\nSupport applicable IAVA/IAVB/IAVM, STIG, vulnerability-remediation, and cybersecurity-hardening activities affecting network infrastructure.\nCoordinate with Cybersecurity personnel to remediate vulnerabilities and maintain secure network configurations.\nMaintain configuration baselines and participate in formal configuration- and change-management processes.\nMaintain current network diagrams, architecture documentation, equipment configurations, circuit information, SOPs, troubleshooting procedures, and other technical documentation.\nDevelop and maintain Standard Operating Procedures (SOPs) and After Action Reports (AARs) for significant outages, maintenance activities, upgrades, and network incidents.\nIdentify network equipment approaching End-of-Life (EOL) or End-of-Support (EOS) and provide recommendations for technology refresh and replacement.\nSupport network equipment replacement and Return Material Authorization (RMA) activities.\nSupport network modernization, upgrades, migrations, installations, and technology-refresh initiatives.\nCoordinate with Cable/Infrastructure Technicians concerning premise wiring, patch panels, network closets, fiber/copper connections, and physical connectivity issues.\nWork with Systems Engineers and Systems Administrators to troubleshoot network-dependent services and application connectivity.\nCoordinate with Cloud Engineers concerning connectivity between on-premises environments and Microsoft Azure/cloud resources.\nProvide Tier III escalation support for complex network problems escalated by Systems Administrators and Technical Support personnel.\nProvide technical guidance and mentoring to network, systems, and support personnel.\n Minimum Experience:Must have 8+ years of progressively responsible network administration, network engineering, or enterprise infrastructure experience.\nMust have an active DoD Secret security clearance.\nMust have a Cisco Certified Network Professional (CCNP) certification.\nMust meet applicable DoD 8140/DCWF requirements for Work Role 441 at the Advanced proficiency level.\nDemonstrated experience supporting complex enterprise LAN/WAN environments.\nAdvanced experience configuring and troubleshooting Cisco routing and switching technologies.\nExperience supporting enterprise wireless network infrastructure.\nStrong understanding of TCP/IP, routing, switching, VLANs, subnetting, DNS, DHCP, SNMP, VPNs, and network-access technologies.\nExperience with network monitoring, performance analysis, fault isolation, and capacity management.\nExperience troubleshooting DISA, telecommunications-provider, WAN, or comparable enterprise circuit connectivity.\nExperience performing network-device patching, firmware/software upgrades, and configuration changes.\nExperience implementing and maintaining secure network configurations.\nKnowledge of DoD cybersecurity requirements applicable to network devices and infrastructure.\nExperience with enterprise network-management and monitoring technologies.\nExperience maintaining network architecture diagrams, configurations, SOPs, circuit documentation, and technical procedures.\nExperience working within formal configuration-management and change-management processes.\nDemonstrated ability to perform advanced network troubleshooting and root-cause analysis.\nAbility to independently resolve complex technical issues and coordinate resolution across multiple engineering disciplines.\nStrong written and verbal communication skills.\nAbility to support geographically dispersed users and infrastructure.\n Preferred Qualifications:Bachelor's degree in Information Technology, Computer Science, Network Engineering, Cybersecurity, Engineering, or related technical discipline.\nCompTIA Security+, CySA+, SecurityX/CASP+, CISSP, or other certification.\nExperience with Cisco Catalyst switches, routers, wireless controllers, and enterprise wireless access points.\nExperience with Cisco Identity Services Engine (ISE) or comparable network-access-control technology.\nExperience with enterprise firewalls and security appliances.\nFamiliarity with DISA STIGs, ACAS/Tenable findings, IAVA requirements, and DoD vulnerability-management processes.\nExperience with SolarWinds or comparable network-monitoring/management platforms.\nExperience supporting fiber and copper network infrastructure.\nExperience with Microsoft Azure networking or hybrid cloud connectivity.\nFamiliarity with VPN, ExpressRoute, cloud routing, network security groups, and hybrid enterprise connectivity.\nExperience with ServiceNow or another enterprise ITSM/ticketing platform.\nITIL Foundation certification or experience working within an ITIL-based service-delivery environment.\nPrevious USMC, Navy, DISA, or other DoD enterprise networking experience.\nCompensationA3T is committed to offering competitive compensation based on individual qualifications and business needs. The salary range posted for this position represents a reasonable estimate of the expected pay range; however, actual compensation may vary depending on factors such as geographic location, education, certifications, technical skills, relevant experience, knowledge, and overall qualifications. The posted range is intended to reflect the typical salary range for this role within A3T.\nTarget Salary for this Role: $115,000 - $140,000\nCompany Overview","description_format":"text","description_chars":7388,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":true},"security_clearance":true,"languages":[]},"benefits":[],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security"],"lifecycle":[{"event":"open","at":"2026-10-14T02:06:34Z"}],"visa":[],"liveness":{"score":100,"band":"hot","label":"Hiring now","p_open":1,"p_active":1,"p_room":1,"age_days":5,"expected_fill_days":35,"reasons":["conf:2","wave","urgency","velocity","win:early"],"computed_at":"2026-10-19T05:45:15Z"},"pay":{"stated_usd_annual":140000,"is_top_pay":false},"html_url":"https://alion.io/job/agil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3","json_url":"https://alion.io/job/agil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3.json","meta":{"generated_at":"2026-10-19T13:28:59Z","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":9667,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-20T00:00:00Z"}},"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":4418733},"rest":"https://alion.io/mcp/rest/get_company?id=4418733"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fagil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3"},{"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%2Fagil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3"},{"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%2Fagil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3"},{"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/agil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fagil3tech-senior-network-engineer-agil3-technology-solutions-a3t-3"}]}