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.

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

• 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, trace route, 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

• 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

AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $/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.

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