Network Engineer, Senior (HPC)

Overview

AMERICAN SYSTEMS, a 100% employee-owned federal government contractor, is seeking a Senior Network Engineer with strong Linux CLI experience to support a secure RHEL-based HPC environment in Arlington, VA .

This role is ideal for a hands-on engineer who can support high-bandwidth, low-latency networks , troubleshoot across network devices and Linux hosts , and help maintain secure, mission-critical inter-site connectivity in a performance-sensitive environment.

This role includes a $5,000 sign-on bonus in addition to a generous compensation package.

Responsibilities

• As a Senior Network Engineer working in a secure high-performance computing environment , you will:

• Support the design, implementation, and optimization of high-bandwidth, low-latency inter-site networks

• Troubleshoot connectivity and performance issues using Linux CLI tools and network device command line interfaces

• Administer RHEL-based networked environments , including interfaces, bonding, VLAN tagging, routing, DNS, DHCP, and name resolution

• Configure and support Cisco, Juniper, and Ciena infrastructure, including routing, switching, firewalls, VPNs, optical transport, and data circuits

• Support network segmentation , ACLs , VLANs , VPNs , and device access control in secure environments

• Assist with Cisco ISE administration, authentication , authorization , and policy enforcement

• Analyze and resolve issues involving routing, MTU, latency, throughput, and traffic flow

• Support maintenance , upgrades , technology refresh , documentation , network diagrams , and operational procedures

• Partner with systems , cybersecurity , and infrastructure teams to sustain secure, reliable mission operations

Qualifications

• TS/SCI clearance with SAP eligibility

• DoD 8140 IAT II certification or higher, such as Security+ CE

• Bachelor’s degree in IT, Computer Science, Engineering , or related field, or equivalent directly related experience in lieu of degree

• 5-7 years of experience in network engineering , network administration , or related infrastructure roles

• CCNA or higher certification

• Strong experience with Linux CLI , including troubleshooting on RHEL-based systems

• Experience with Linux networking concepts such as interfaces, bonding, VLAN tagging, routing, name resolution, port connectivity, and performance analysis

• Experience using tools such as ip, ss, tcpdump, ping, traceroute, dig, and nslookup

• Experience supporting high-bandwidth, low-latency, multi-site networks

• Strong knowledge of Layer 2/Layer 3 , TCP/IP , VLANs , routing , ACLs , DNS , DHCP , high availability , segmentation , MTU , latency , and throughput

• Experience with Cisco routing and switching , firewalls , VPNs , and high-capacity data circuits

• Ability to work independently with general direction in a mission-focused team environment

• Ideal Qualifications

• Experience with Juniper and Ciena

• Experience supporting HPC , research computing , or other performance-sensitive environments

• Experience with Cisco ISE

• Familiarity with optical transport and inter-site connectivity

• Strong documentation and cross-team collaboration skills

• Professional, adaptable, and open to learning new tools and technologies

• AMS1

Pay Transparency Statement AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $150,000.00/Yr. - USD $180,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance. EEO Statement EEO Race/Sex/Disability Status/Veteran Status