Network & Systems Support Engineer

Centex Technologies; Killeen (TX); On-site; USD 65,000 - 95,000; Full time

Job summary

Centex Technologies in Killeen, TX, seeks a Network & Systems Support Engineer to act as the primary on-site resource for a secure, mission-critical environment. You will diagnose and resolve infrastructure issues, coordinate with remote teams, and ensure network and system reliability in a regulated setting.

The role requires hands-on hardware and software troubleshooting, adherence to security credentials, and the ability to work independently onsite while collaborating with cloud and

Qualifications

• Hands-on experience with on-site network and Windows-based systems.
• Ability to work independently onsite with remote collaboration.
• Eligibility for required client security credentials.
• Experience in secure/regulated environments preferred.

Responsibilities

• Serve as the primary local resource for on-site network and systems support.
• Respond to incidents requiring physical intervention.
• Diagnose connectivity and infrastructure issues across switches, servers, and firewalls.
• Troubleshoot performance, hardware failures, and system availability.
• Coordinate with remote engineers and cybersecurity specialists.
• Maintain accurate diagnostics and service reporting.

Skills

TCP/IP networking

Network troubleshooting

Windows Server

Firewall fundamentals

On-site support

Documentation and reporting

Job description

Description

This position is contingent on the award of a contract.

Description

This position is contingent on the award of a contract.

The Network & Systems Support Engineer will serve as the primary local technical resource supporting a secure, mission‑critical network and systems environment. This position will provide onsite network, systems, hardware, and infrastructure troubleshooting and support as part of an integrated technical team that includes remote network engineers, cybersecurity specialists, monitoring personnel, and program management resources.

The Engineer will be responsible for responding to onsite service requirements within established response times, diagnosing and resolving infrastructure issues within the authorized scope, serving as the onsite technical resource for remote engineering and cybersecurity personnel, and coordinating with client personnel and third‑party technology providers as necessary.

Experience supporting airport, aviation, TSA‑regulated, or other secured/regulated environments is preferred but not required. The selected individual must be able to successfully complete all required security screening, background checks, training, and credentialing necessary to obtain and maintain access to the client environment.

Primary Responsibilities

• Serve as the primary local resource for on‑site network and systems support.
• Respond to network, systems, hardware, and infrastructure incidents requiring physical intervention.
• Diagnose connectivity and infrastructure issues involving switches, servers, workstations, firewalls, cabling, power supplies, interface hardware, and associated components.
• Troubleshoot network performance, connectivity, hardware failures, and system availability issues.
• Perform physical inspection and hands‑on troubleshooting of network and systems equipment.
• Work collaboratively with remote network engineers and cybersecurity specialists to diagnose and resolve complex technical issues.
• Serve as the onsite “hands and eyes” for remote engineering and cybersecurity personnel when physical access to systems or equipment is required.
• Perform authorized repairs, maintenance, configuration changes, firmware/software updates, and other corrective actions.
• Validate system and network functionality following repairs, maintenance, or approved changes.
• Assist with preventive maintenance and identify potential equipment, configuration, performance, reliability, and lifecycle concerns.
• Provide onsite assistance during cybersecurity incidents when physical access, equipment isolation, local investigation, or implementation of approved remediation is required.
• Assist senior cybersecurity personnel with onsite activities associated with cybersecurity assessments and technical reviews.
• Coordinate technical activities with client personnel, internal engineering teams, and third‑party technology providers.
• Recognize issues requiring escalation to senior network, systems, cybersecurity, or third‑party specialists and facilitate troubleshooting with those resources.
• Maintain accurate documentation of diagnostics, repairs, maintenance activities, system changes, and corrective actions.
• Support scheduled maintenance and approved after‑hours or emergency work when required.
• Maintain all required security credentials, training, and access authorizations throughout the period of performance.

Requirements

Preferred Qualifications

The ideal candidate will have hands‑on experience supporting network and Windows‑based systems environments and be comfortable working independently onsite while collaborating with senior technical resources remotely.

Preferred Technical Experience Includes

• TCP/IP networking and network troubleshooting;
• managed Ethernet switches and VLANs;
• Windows workstations and Windows Server;
• firewall and network‑security fundamentals;
• network connectivity and interface troubleshooting;
• physical network infrastructure and cabling;
• server and workstation hardware troubleshooting;
• firmware and software maintenance;
• system and network logs and diagnostic tools;
• remote troubleshooting and collaboration with senior engineers; and technical documentation and service reporting.

Airport, aviation, TSA‑regulated, critical infrastructure, government, or other secured environment experience is preferred.

Because this position will require onsite access to secured areas and systems, the selected individual must be eligible to satisfy all applicable client and Airport security and credentialing requirements.