Network Administrator

Network Administrator

Abacus Technology is seeking a Network Administrator to manage and maintain network infrastructure in a dynamic mission‑critical environment under the US Military Training Mission (USMTM) in the Kingdom of Saudi Arabia. This full‑time position requires expertise in LAN/WAN, security, and support of voice and video systems.

Responsibilities

• Network administration: administer, install, configure, troubleshoot, test, and maintain network‑related hardware including HAIPE encryption devices, switches, routers, and transport devices.
• Utilize network monitoring and management tools to proactively identify, troubleshoot, and resolve performance issues.
• Oversee and troubleshoot complex LAN issues, configure and manage switch stacking solutions including Cisco StackWise and StackWise Virtual Link (SVL).
• Implement and troubleshoot Layer2 network solutions, including VLAN configuration, trunking, spanning‑tree protocol (STP), and inter‑switch connectivity.
• Configure and manage TACLANE encryptors with the Agile‑VLAN feature to enable simultaneous transmission of Layer2 and HAIPE traffic.
• Implement and manage 802.1X port‑based network access control and MAC Authentication Bypass (MAB) for non‑802.1X compliant devices.
• Use NetFlow to monitor and analyze network traffic patterns, identify bottlenecks, and detect potential security threats.
• Configure and manage Quality of Service (QoS) policies at the access layer to prioritize critical traffic such as voice, video, and real‑time applications.
• Coordinate with off‑site service providers (WAN, Voice/WANSEC via Remedy ServiceNow ticketing system) to resolve issues with DMZs, boundary routers, switches, Cisco CUBE firewalls, IDS/IPS, VPN concentrators, and encryption devices.
• Work with local base operations teams (help desk, system, ISP/OSP) to address outages and restore service per established SLAs.
• Troubleshoot and coordinate VTC (Video Teleconferencing) outages with off‑site bridge personnel.
• Performance monitoring, tuning, IOS upgrades, patching, backup and recovery, and problem resolution for network and voice routers and switches.
• Participate in planning and design of infrastructure upgrades or enhancements.
• Collaborate with the Voice Engineer to troubleshoot, configure, and maintain voice and video systems and support deployments, testing, and optimization of related hardware and software.
• Assist with risk management and compliance: build and maintain RMF Assessment and Authorization (ATO) packages for two ARCENT Cyber Security‑administered enclaves; maintain DISA STIG, SCAP scans; develop and complete system security documentation per RMF and eMASS workflows.
• Identify and report system risks related to network and voice hardware/software; assist in developing and completing system security documentation.
• Asset management: maintain inventory and manage life‑cycle replacement schedules for network infrastructure.

Qualifications

• 4+ years of experience in core network services connectivity and integration.
• Security+ and CCNA certified; CCNP certification desired.
• Discipline troubleshooting methodology and ability to ensure task/mission completion.
• Experience applying DoD and industry best practices in daily network operations.
• Analytical skills to translate complex inputs into well‑defined system requirements.
• Comfortable interacting with outside organizations, clients, and end users to assess current state and future needs.
• Strong written and verbal communication skills.
• Proficient in developing and maintaining detailed network diagrams, schematics, and documentation using Microsoft Visio or similar tools.
• Willing to work outside normal business hours as needed to support unexpected issues or planned projects.
• Valid driver’s license.
• U.S. citizen holding a current Secret clearance; willing to live and work in the Kingdom of Saudi Arabia.
• Applicants selected will be subject to a U.S. government security investigation and must meet eligibility requirements for access to classified information.

EEO/M/F/Vet/Disabled