
IT Networking Engineer (Cisco ISE)
Amarillo, TXFull-timePosted 2mo agoStill listed today
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At a glance
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Requirements
Credentials this posting asks for.
Job overview
Longenecker & Associates, a Geosyntec Company, seeks an IT Networking Engineer (Cisco ISE) to support its work at Pantex in Amarillo, Texas. The role maintains core network infrastructure and Cisco ISE availability, resolves authentication incidents, administers network access and security integrations, and supports compliance and network operations. The position is onsite and requires full-time attendance.
Skills & qualifications
Skills
Qualifications
Full job description
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
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Maintain 99.9% availability of core network infrastructure including routers, switches, and data center fabrics.
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Maintain 99.9% availability of Cisco ISE Policy Administration and Policy Service Nodes.
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Resolve wired, wireless, and VPN authentication and authorization incidents within defined SLAs.
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Administer Active Directory, LDAP, MFA, and SAML integrations.
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Manage Network Access Devices including switches, wireless controllers, and VPN gateways.
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Maintain STIG compliance and remediate security vulnerabilities.
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Manage certificate lifecycle and prevent outages caused by certificate expiration.
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Administer profiling, posture, and authorization policies.
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Configure DHCP, HTTP, RADIUS, SNMP, DNS, NetFlow, and AD profiling probes.
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Develop upgrade plans, backups, documentation, and topology diagrams.
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Support network operations including routers, switches, load balancers, DNS, DHCP, and IPAM
Education and Licensure
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Bachelor’s degree in a related field and a minimum of 5 years of relevant experience.
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Master’s degree in a related field and a minimum of 2 years of relevant experience.
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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:
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At least 5 years of relevant experience or equivalent combination of education and experience. (required)
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Experience with Cisco Identity Services Engine (ISE)
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Knowledge of Cisco enterprise routing and switching.
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Experience with security compliance, STIGs, and vulnerability remediation.
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Must possess an active DoD Top Secret (TS) clearance or DOE Q Clearance, or have previously held one and be eligible for reinstatement. (required)
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Ability to work with classified information and comply with security requirements (required)
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Due to federal contract security requirements, this position requires U.S. Citizenship. (required)
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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)
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Health & Safety training, medical monitoring, and client-driven drug and background testing. (required)
PREFERRED QUALIFICATIONS & LOCATION DETAILS:
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Cisco Catalyst Center (DNA Center)
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Tenable Vulnerability Management
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Splunk administration and monitoring
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Load Balancers (LTM/GTM)
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DNS DHCP/IPAM administration
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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.
How this job compares
Set against the 4,184 open Network Engineer jobs on Olive Jobs, counted November 10, 2026.
- Pay
- This postingNot listed
- Texas median$116–191K/yr143 salary ranges
- US median$50–63/hr155 hourly ranges
- Openings
- Olive Jobs lists 253 open Network Engineer jobs in Texas and 4,184 across the US. 5% of them nationwide are listed as remote or flexible.
- Experience
- This posting asks for at least 5 years of experience; Network Engineer postings that state a minimum ask for 5 years at the median (3,614 postings).
- Education
- 1,164 of the 4,184 open Network Engineer jobs (28%) ask for a bachelor's degree or higher.
Counted across the open, public US postings on Olive Jobs on November 10, 2026. Pay medians are the middle values of the low ends and of the high ends of postings that list both ends of a range in the same cadence (a yearly salary or an hourly rate); a range's midpoint is halfway between its ends. Pay and experience figures resting on fewer than 20 postings are left out.
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