Senior Network Engineer

• Engineer, configure, administer, maintain, monitor, and troubleshoot enterprise LAN, WAN, and wireless network infrastructure.
• Configure and maintain Cisco network equipment and associated network-management technologies.
• Manage and troubleshoot switches, routers, wireless infrastructure, network interfaces, VLANs, IP addressing, and related network services.
• Support Internet Protocol Address Management (IPAM) and maintain accurate IP address and VLAN assignments.
• Configure and maintain network access and connectivity supporting users, servers, applications, cloud services, and enterprise systems.
• Support and troubleshoot DISA and commercial telecommunications circuits, including coordination with external service providers when necessary.
• Open, manage, track, and resolve technical support cases with Cisco TAC and other network-equipment vendors.
• Diagnose complex network outages, degraded performance, packet loss, connectivity failures, routing problems, wireless issues, and other infrastructure incidents.
• Monitor network availability, utilization, capacity, performance, and security and proactively identify potential service degradation.
• Perform advanced root-cause analysis of network and infrastructure incidents and recommend corrective actions.
• Install and implement network device software, firmware, patches, and security updates in accordance with applicable cybersecurity directives.
• Support applicable IAVA/IAVB/IAVM, STIG, vulnerability-remediation, and cybersecurity-hardening activities affecting network infrastructure.
• Coordinate with Cybersecurity personnel to remediate vulnerabilities and maintain secure network configurations.
• Maintain configuration baselines and participate in formal configuration- and change-management processes.
• Maintain current network diagrams, architecture documentation, equipment configurations, circuit information, SOPs, troubleshooting procedures, and other technical documentation.
• Develop and maintain Standard Operating Procedures (SOPs) and After Action Reports (AARs) for significant outages, maintenance activities, upgrades, and network incidents.
• Identify network equipment approaching End-of-Life (EOL) or End-of-Support (EOS) and provide recommendations for technology refresh and replacement.
• Support network equipment replacement and Return Material Authorization (RMA) activities.
• Support network modernization, upgrades, migrations, installations, and technology-refresh initiatives.
• Coordinate with Cable/Infrastructure Technicians concerning premise wiring, patch panels, network closets, fiber/copper connections, and physical connectivity issues.
• Work with Systems Engineers and Systems Administrators to troubleshoot network-dependent services and application connectivity.
• Coordinate with Cloud Engineers concerning connectivity between on-premises environments and Microsoft Azure/cloud resources.
• Provide Tier III escalation support for complex network problems escalated by Systems Administrators and Technical Support personnel.
• Provide technical guidance and mentoring to network, systems, and support personnel.

• Must have 8+ years of progressively responsible network administration, network engineering, or enterprise infrastructure experience.
• Must have an active DoD Secret security clearance.
• Must have a Cisco Certified Network Professional (CCNP) certification.
• Must meet applicable DoD 8140/DCWF requirements for Work Role 441 at the Advanced proficiency level.
• Demonstrated experience supporting complex enterprise LAN/WAN environments.
• Advanced experience configuring and troubleshooting Cisco routing and switching technologies.
• Experience supporting enterprise wireless network infrastructure.
• Strong understanding of TCP/IP, routing, switching, VLANs, subnetting, DNS, DHCP, SNMP, VPNs, and network-access technologies.
• Experience with network monitoring, performance analysis, fault isolation, and capacity management.
• Experience troubleshooting DISA, telecommunications-provider, WAN, or comparable enterprise circuit connectivity.
• Experience performing network-device patching, firmware/software upgrades, and configuration changes.
• Experience implementing and maintaining secure network configurations.
• Knowledge of DoD cybersecurity requirements applicable to network devices and infrastructure.
• Experience with enterprise network-management and monitoring technologies.
• Experience maintaining network architecture diagrams, configurations, SOPs, circuit documentation, and technical procedures.
• Experience working within formal configuration-management and change-management processes.
• Demonstrated ability to perform advanced network troubleshooting and root-cause analysis.
• Ability to independently resolve complex technical issues and coordinate resolution across multiple engineering disciplines.
• Strong written and verbal communication skills.
• Ability to support geographically dispersed users and infrastructure.

• Bachelor's degree in Information Technology, Computer Science, Network Engineering, Cybersecurity, Engineering, or related technical discipline.
• CompTIA Security+, CySA+, SecurityX/CASP+, CISSP, or other certification.
• Experience with Cisco Catalyst switches, routers, wireless controllers, and enterprise wireless access points.
• Experience with Cisco Identity Services Engine (ISE) or comparable network-access-control technology.
• Experience with enterprise firewalls and security appliances.
• Familiarity with DISA STIGs, ACAS/Tenable findings, IAVA requirements, and DoD vulnerability-management processes.
• Experience with SolarWinds or comparable network-monitoring/management platforms.
• Experience supporting fiber and copper network infrastructure.
• Experience with Microsoft Azure networking or hybrid cloud connectivity.
• Familiarity with VPN, ExpressRoute, cloud routing, network security groups, and hybrid enterprise connectivity.
• Experience with ServiceNow or another enterprise ITSM/ticketing platform.
• ITIL Foundation certification or experience working within an ITIL-based service-delivery environment.
• Previous USMC, Navy, DISA, or other DoD enterprise networking experience.

Agil3 Technology Solutions LLC ("A3T") is a Northern Virginia based, ISO 9001, ISO 20000-1 & ISO 27001 Certified, Women-Owned (WOSB) and Service-disabled Veteran-Owned (SDVOSB) small business. A recent recipient of the prestigious Washington Technology TOP 50 (ranking #9, and on the list for last 4 years!), A3T is experiencing industry leading recognition and growth. In addition to the CEO’s recognition as an “All-Star Entrepreneur”, A3T is recognized by Inc Magazine as one of the fastest growing companies in the country, by Vet 50 as Fastest Growing Veteran-Owned Businesses, and is featured in CyberSecurity Ventures / Cybercrime Magazine! “As a go-to Women-Owned Cybersecurity company in US and internationally”. As part of our growth, we are looking for YOU to join our growing team.

A3T offers excellent benefits to enhance the work-life balance, including:

• Medical Insurance
• Dental Insurance
• Vision Insurance
• Life Insurance
• Short Term & Long-Term Disability
• 401k Retirement Savings Plan with Company Match
• Paid Holidays
• Paid Time Off (PTO)
• Tuition and Professional Development Assistance
• Parking/Travel Reimbursement (metropolitan areas)