FBEL

Amentum•Colorado Springs, CO

1d•Onsite

About The Position

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.

Requirements

12, or more, years of general (full-time) work experience
6, or more, years of directly related experience
1, or more, years of experience working in a management or leadership role
Demonstrated, hands-on, engineering and administration experience with: Cisco Nexus (NX-OS) switches configured in Spine-Leaf / EVPN-VxLAN topologies.
Demonstrated, hands-on, engineering and administration experience with: VMware NSX software-defined network segmentation and gateway routing.
Demonstrated, hands-on, engineering and administration experience with: F5 BIG-IP LTM/GTM application delivery controllers.
Demonstrated, hands-on, engineering and administration experience with: Infoblox DDI/IPAM grid managers.
Demonstrated, hands-on, engineering and administration experience with: Versa SD-WAN enterprise solutions or equivalent software-defined WAN transport.
Hold a current DoW 8140/8570 IAT Level II or higher certification (e.g., Security+ CE, CySA+, CASP+ CE, CISSP).
Active DoW Secret security clearance with verified eligibility to obtain a Top Secret clearance (or active Top Secret).
Active DoW Secret Security Clearance

Nice To Haves

Active DoW Top Secret security clearance.
Cisco Certified Network Professional (CCNP Enterprise or Data Center)
VMware Certified Professional - Network Virtualization (VCP-NV) or VCAP-NV
F5 Certified Technology Specialist (F5-CTS)
Versa Certified SD-WAN Associate/Specialist
Infoblox Core DDI Configurator Associate (CDCA)
Practical experience scripting or automating network changes with Python, Ansible, or Terraform.
Experience supporting the Missile Defense Agency (MDA), the IRES contract, or secure DISA networks.
Experience with Agile/SAFe development methodologies and tools (Jira, Confluence).

Responsibilities

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.
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.
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.
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.
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.
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).
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.
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.