Network Administrator, Lead (HPC)

AMERICAN SYSTEMS a 100% employee-owned federal government contractor is seeking a Network Administrator to support a secure high-availability Linux-based HPC environment with geographically dispersed operations.

This role is ideal for a hands-on network professional experienced in high-bandwidth low-latency inter-site communications. You will support advanced compute platforms high-capacity data transfers optical transport enterprise services and secure connectivity across Cisco Juniper and Ciena infrastructure.

This role includes a $5000 sign-on bonus in addition to a generous compensation package.

As a Lead Network Administrator working for AMERICAN SYSTEMS in a high-performance computing environment you will:

• Architect and engineer high-bandwidth low-latency inter-site network solutions connecting geographically dispersed HPC sites.
• Design scalable communications architectures supporting high-capacity data transfers redundancy traffic optimization secure connectivity and mission-critical availability.
• Configure maintain and troubleshoot Cisco Juniper and Ciena routing switching firewall VPN optical transport and data circuit infrastructure.
• Administer Linux-based networks supporting compute storage management and user access including host interfaces bonding VLAN tagging routing DNS DHCP and name resolution.
• Support Cisco ISE administration firewall policies network segmentation ACLs VLANs VPNs authentication authorization policy enforcement and device access control.
• Use CLI-based tools to diagnose routing switching MTU latency throughput and connectivity issues across network devices and Linux hosts.
• Support inter-site provisioning and lifecycle activities including maintenance upgrades technology refresh documentation diagrams standards and operational procedures.
• Partner with systems cybersecurity and infrastructure teams to maintain secure reliable mission operations.

• TS/SCI clearance with SAP eligibility
• DoD 8140 IAT II certification or higher Security CE or equivalent
• Bachelors degree in IT Computer Science Engineering or related field (directly related experience in lieu of degree)
• 812 years of network administration engineering or architecture experience in enterprise or HPC environments
• CCNA or equivalent Cisco experience required; advanced Cisco certifications strongly valued.
• Experience designing supporting and troubleshooting high-bandwidth low-latency multi-site networks including Cisco routing/switching Cisco ISE firewalls VPNs optical transport and high-capacity data circuits (Juniper and Ciena experience strongly valued)
• Strong knowledge of Layer 2/Layer 3 TCP/IP VLANs routing ACLs DNS DHCP high availability segmentation MTU latency throughput and traffic optimization
• Linux networking experience including interfaces bonding VLAN tagging routing name resolution port connectivity CLI troubleshooting and performance analysis
• Experience with tools such as ip ss tcpdump ping traceroute dig and nslookup
• Team-oriented and collaborative with the ability to work independently with general direction

• Open to learning new tools technologies and processes

• Professional adaptable and well-suited for amission-focused environment

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