IT Networking Engineer

Geosyntec Consultants; Amarillo (TX); On-site; USD 90,000 - 130,000; Full time

Job summary

Longenecker & Associates, a Geosyntec Company, supports critical missions for the DOE complex and is seeking an IT Networking Engineer to sustain 99.9% network availability at Pantex in Amarillo, TX. The role requires active clearance, DoD/DOE eligibility, and strong Cisco routing/switching skills.

We value experience with Cisco ISE, DNA Center, Tenable, Splunk, load balancers, DNS/DHCP/IPAM, and a commitment to security and safety in a government contracting environment.

Qualifications

• At least 5 years of relevant experience or equivalent education.
• Experience with Cisco enterprise routing and switching technologies.
• Knowledge of network troubleshooting, operations, and infrastructure management.
• Active DoD Top Secret (TS) clearance or DOE Q clearance, or eligible for reinstatement.
• Ability to work with classified information and security requirements.
• U.S. Citizenship required.
• Must pass a federal background investigation to obtain/maintain DOE Q clearance.
• Health & Safety training and client-driven background checks.

Responsibilities

• Maintain 99.9% availability of core network infrastructure including routers, switches, and data center fabrics.
• Resolve network incidents and service outages within established SLAs.
• Develop lifecycle, upgrade, patching, and rollback plans for network infrastructure.
• Monitor network devices and ensure proper NOC/SOC onboarding and telemetry reporting.
• Provide recommendations for performance optimization, capacity planning, and remediation activities.
• Support Cisco ISE authentication, authorization, and access control services.
• Administer Network Access Devices and identity groups.
• Manage VoIP administration, moves, adds, changes, and deletions.
• Administer wireless LAN infrastructure and access point deployments.
• Manage load balancers, DNS, DHCP, and IPAM environments.
• Maintain technical documentation, diagrams, inventories, and change records.
• Submit and manage RFCs through ServiceNow and comply with CAB processes.

Skills

Cisco routing & switching

Network troubleshooting

Security clearance

U.S. Citizenship

Background check compliance

Federal security requirements

Education

Bachelor's degree in related field

Master's degree in related field

10+ years experience in lieu of degree

Tools

Cisco ISE

Catalyst Center / DNA Center

Tenable

Splunk

Load Balancers (LTM/GTM)

DNS/DHCP/IPAM

Job description

IT Networking Engineer

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 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.
• Resolve network incidents and service outages within established SLAs.
• Develop lifecycle, upgrade, patching, and rollback plans for network infrastructure.
• Monitor network devices and ensure proper NOC/SOC onboarding and telemetry reporting.
• Provide recommendations for performance optimization, capacity planning, and remediation activities.
• Support Cisco ISE authentication, authorization, and access control services.
• Administer Network Access Devices and identity groups.
• Manage VoIP administration, moves, adds, changes, and deletions.
• Administer wireless LAN infrastructure and access point deployments.
• Manage load balancers, DNS, DHCP, and IPAM environments.
• Maintain technical documentation, diagrams, inventories, and change records.
• Submit and manage RFCs through ServiceNow and comply with CAB processes.

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 enterprise routing and switching technologies. (required)
• Knowledge of network troubleshooting, operations, and infrastructure management. (required)
• 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 ISE
• Cisco Catalyst Center (DNA Center)
• Tenable
• Splunk
• 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.