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Senior Network Engineer IRES - SSFB​/HSV​/FBEL

Job in Arlington, Arlington County, Virginia, 22201, USA
Listing for: Amentum
Full Time position
Listed on 2026-10-13
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer, Network Engineer, Network Security
Salary/Wage Range or Industry Benchmark: 170000 - 220000 USD Yearly USD 170000.00 220000.00 YEAR
Job Description & How to Apply Below
Position Title:

Senior Network Engineer

Location:

Schriever Space Force Base, Colorado Springs, CO;
Redstone Arsenal, Huntsville, AL or Fort Belvoir, VA Relocation Assistance:
None available at this time Remote/Telework: NO
- Not available for this position Clearance Type:
DoW Secret

Shift: Day shift

Travel Required:

Up to 10% of the time Description of Duties

As a Senior Network Engineer supporting the Next Generation Environment (NGE) on the Integrated Research and Development for Enterprise Solutions (IRES) contract, you will serve as a senior technical contributor responsible for engineering, configuring, implementing, and securing the high-speed data center fabrics and software-defined network enclaves underpinning the Missile Defense Agency’s (MDA) unified digital environment.

In this role, you will turn high-level architectural designs into resilient, automated network solutions by configuring Cisco Nexus Spine-Leaf EVPN-VxLAN fabrics, VMware NSX software-defined networks, Versa SD-WAN edge transport, F5 BIG-IP application delivery controllers, and Infoblox enterprise DDI services. You will collaborate across engineering, systems architecture, systems security, multi-contractor consortium performers, and Government stakeholder teams to deliver cohesive hybrid cloud and on-premises network transport.

You will play a key role in standardizing infrastructure automation, resolving complex tier-3/4 routing issues, enforcing Zero Trust boundaries, and ensuring continuous network compliance with DoD, DISA, and MDA security requirements.

Data Center Fabric Engineering
  • Configure, deploy, and administer Cisco Nexus (NX-OS) switches operating in high-performance Spine-Leaf topologies.
  • Build, maintain, and optimize EVPN-VxLAN virtual overlay networks, Multi-Site fabrics, vPC domains, and complex underlay routing baselines.
Software-Defined Networking & Micro-segmentation
  • Deploy, configure, and manage VMware NSX components including NSX Edge nodes, Tier-0 and Tier-1 logical gateways, and distributed firewalls.
  • Implement policy-driven micro-segmentation rules within virtualized compute environments (vSphere/VCF) to isolate mission workloads and support multi-tenant enclaves.
Application Delivery & Load Balancing
  • Deploy, configure, and maintain F5 BIG-IP physical and virtual appliances, specifically Local Traffic Managers (LTM) and Global Traffic Managers (GTM).
  • Author and troubleshoot custom F5 iRules, and configure virtual servers, load-balancing pools, health monitors, and secure SSL/TLS decryption profiles.
SD-WAN & Edge Connectivity
  • Provision, deploy, and maintain Versa SD-WAN edge appliances (including Director, Analytics, and VOS) to establish secure transport across disparate WAN paths.
  • Configure secure tunneling, dynamic traffic steering rules, QoS queue policies, and security boundaries for remote sites and tactical test networks.
Core DDI & IPAM Administration
  • Administer enterprise-wide IP Address Management (IPAM), authoritative internal DNS zones, and DHCP scopes utilizing Infoblox Grid Manager.
  • Support the automation of DNS records and IP allocation using Infoblox APIs integrated with Infrastructure-as-Code pipelines.
Zero Trust & Network Security Hardening
  • Implement identity-aware access controls, 802.1X network access control (NAC), and FIPS-compliant cryptography tunnels (IPsec/MACsec).
  • Harden all network assets in accordance with DISA STIGs, Risk Management Framework (RMF) guidelines, and MDA cybersecurity requirements to support continuous ATO (cATO).
Consortium & Program Integration (Program-Facing)
  • Coordinate and collaborate directly with external contractor performers and systems administrators across the program consortium during joint integration events, lab setups, and production cutovers.
  • Author and execute comprehensive Low-Level Designs (LLDs), Interface Control Documents (ICDs), standard operating procedures (SOPs), deployment runbooks, and cutover plans.
Automation, Dev Sec Ops  & Scripting
  • Develop and sustain Infrastructure-as-Code (IaC) playbooks and configuration management scripts (Ansible, Terraform, Python, Bash) to automate configuration deployments, perform validation checks, and remediate compliance drift.
Basic Requirements
  • Must have 12, or more, years of general (full-time) work experience
  • May be reduced with completion of advanced education
  • Must have 6, or more, years of directly related experience
  • Must have 1, or more, years of experience working in a management or leadership role
  • Must have demonstrated, hands-on,…
Position Requirements
10+ Years work experience
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