Overview Longenecker & Associates (L&A), a Geosyntec Company, is a trusted partner enabling critical missions across the U.S. Department of Energy (DOE) complex for more than 30 years. We contribute to DOE’s nuclear security and environmental remediation enterprise by providing the highest-caliber staff and experts. We are seeking a motivated IT Networking Engineer (Cisco ISE) to contribute to our mission supporting our work at Pantex in Amarillo, TX. Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service. We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well-being programs to support you and your family. To Learn More Visit: http://www.geosyntec.com/careers/. Essential Duties and Responsibilities • Maintain 99.9% availability of core network infrastructure including routers, switches, and data center fabrics. • Maintain 99.9% availability of Cisco ISE Policy Administration and Policy Service Nodes. • Resolve wired, wireless, and VPN authentication and authorization incidents within defined SLAs. • Administer Active Directory, LDAP, MFA, and SAML integrations. • Manage Network Access Devices including switches, wireless controllers, and VPN gateways. • Maintain STIG compliance and remediate security vulnerabilities. • Manage certificate lifecycle and prevent outages caused by certificate expiration. • Administer profiling, posture, and authorization policies. • Configure DHCP, HTTP, RADIUS, SNMP, DNS, NetFlow, and AD profiling probes. • Develop upgrade plans, backups, documentation, and topology diagrams. • Support network operations including routers, switches, load balancers, DNS, DHCP, and IPAM Education and Licensure • Bachelor’s degree in a related field and a minimum of 5 years of relevant experience. • Master’s degree in a related field and a minimum of 2 years of relevant experience. • Experience in lieu of education: A combination of 10 or more years of relevant education, training, and/or professional experience may be considered in place of the degree requirement. Skills, Experience and Qualifications REQUIRED SKILLS, EXPERIENCE AND QUALIFICATIONS: • At least 5 years of relevant experience or equivalent combination of education and experience. (required) • Experience with Cisco Identity Services Engine (ISE) • Knowledge of Cisco enterprise routing and switching. • Experience with security compliance, STIGs, and vulnerability remediation. • Must possess an active DoD Top Secret (TS) clearance or DOE Q Clearance, or have previously held one and be eligible for reinstatement. (required) • Ability to work with classified information and comply with security requirements (required) • Due to federal contract security requirements, this position requires U.S. Citizenship. (required) • Due to federal contract security requirements, candidates must be able to successfully pass a federal background investigation to secure and maintain DOE Q security clearance. (required) • Health & Safety training, medical monitoring, and client-driven drug and background testing. (required) PREFERRED QUALIFICATIONS & LOCATION DETAILS: • Cisco Catalyst Center (DNA Center) • Tenable Vulnerability Management • Splunk administration and monitoring • Load Balancers (LTM/GTM) • DNS DHCP/IPAM administration • This position is onsite and requires full-time attendance in Amarillo, TX. Please note that federal contractors are required to maintain a drug-free workplace. Regardless of state laws permitting medical or recreational marijuana use, employees working under federal contracts may be subject to federal requirements that prohibit marijuana use.