Senior NSX Engineer

Abile Group, LLC; Springfield (VA); On-site; USD 130,000 - 170,000; Full time

Job summary

Abile Group is seeking a Senior NSX Engineer to support User Facing and Data Center IT services for an Intelligence Community customer. The role involves design, deployment, operations, and sustainment of NSX-T/VCF networks across production, development, test, and mission environments worldwide.

Required are 5+ years of NSX and vSphere experience, DoW/regulatory experience, and strong skills in firewall policy design, BGP, NAT, and automation tooling.

Qualifications

• 5+ years hands-on NSX experience in enterprise-scale environments.
• 5+ years VMware vSphere experience including ESXi, vCenter, and VDS.
• Experience in DoW, federal civilian, intelligence community, or other highly regulated environments.

Responsibilities

• Designs, deploys, configures, operates, and sustains NSX-T/VCF networking across multiple environments.
• Leads NSX upgrades, patching, and lifecycle-management activities with test and rollback plans.
• Develops auditable, least-privilege firewall policies with cybersecurity teams.
• Troubleshoots BGP/routing issues, MTU/TEP/Geneve, and NSX Edge failures.
• Mentors junior engineers and maintains runbooks and diagrams.

Skills

Advanced NSX-T/VCF Networking

BGP routing

Distributed Firewall

Firewall policy design

VPN/DHCP/NAT

DoW/Regulated environments

RMF/ATO/STIGs

Strong communication

Tools

PowerShell/PowerCLI

Ansible

VMware Aria Automation

REST APIs

Git

YAML

JSON

Splunk

Elastic

Job description

Abile Group has an exciting and challenging opportunity for a Senior NSX Engineer on a 10 year contract providing User Facing and Data Center Services supporting an Intelligence Community customer. All the personnel on the team will work together to support innovative design, engineering, procurement, implementation, operations, sustainment and disposal of user facing and data center information technology (IT) services on multiple networks and security domains, at multiple locations worldwide, to support the IC mission.

• Designs, deploys, configures, operates, and sustains VMware NSX-T / VMware Cloud Foundation Networking across production, development, test, and mission environments.
• Engineers NSX Manager clusters, transport nodes/profiles, transport zones, uplink profiles, VDS/N-VDS networking, and NSX Edge clusters.
• Designs and administers overlay and VLAN-backed segments, Tier-0/Tier-1 gateways, distributed routing, BGP, static routing, ECMP, route redistribution, and north-south/east-west connectivity.
• Implements microsegmentation and Zero Trust-aligned controls using Distributed Firewall, Gateway Firewall, security groups, dynamic membership, tags, context profiles, and policy-based security.
• Develops auditable, least-privilege firewall policies in coordination with cybersecurity, ISSO/ISSM, RMF, application, and network teams.
• Integrates NSX with vCenter, vSphere, VCF, vSAN, VMware Aria Operations/Logs, PKI, identity, SIEM, vulnerability-management, and enterprise monitoring platforms.
• Troubleshoots BGP/routing adjacency failures, MTU/TEP/Geneve issues, asymmetric routing, firewall processing, packet loss, performance degradation, and NSX Edge failures.
• Performs packet-level analysis using NSX CLI/nsxcli, vmkping, pktcap-uw, tcpdump-uw, Traceflow, flow monitoring, and distributed firewall analysis.
• Leads NSX upgrades, patching, certificate replacement, migrations, backup/recovery validation, and lifecycle-management activities with formal implementation, test, validation, and backout plans.
• Maintains engineering standards, configuration baselines, diagrams, firewall matrices, runbooks, and as-built documentation; provide Tier 3 escalation support and mentor junior engineers.

Clearance Required

TS/SCI with current CI Poly.

Degree and Years of Experience

• 5+ years of hands-on VMware NSX experience in enterprise-scale environments.
• 5+ years of VMware vSphere experience, including ESXi, vCenter Server, VDS, virtual networking, cluster operations, and troubleshooting.

Required Certifications

• 8140.01M IAT Level II certification.
• Certification requirements should align with the assigned DoW Cyber Workforce Framework / DoW 8140 work role and applicable contract requirements.
• One current VMware/Broadcom networking, security, or VMware Cloud Foundation certification, such as VCP‑NV, VMware Cloud Foundation Administrator, VMware Cloud Foundation Architect, or a comparable current NSX/VCF networking certification.

Required Skills

• Advanced NSX-T / VCF Networking expertise overlay/VLAN segments, Tier-0/Tier-1 gateways, Edge Nodes/clusters, BGP, static routing, ECMP, route redistribution, Distributed Firewall, Gateway Firewall, dynamic groups/tagging, NAT, VPN, DHCP, and lifecycle operations.
• Strong enterprise networking fundamentals TCP/IP, DNS, DHCP, ARP, VLANs, VXLAN/Geneve, MTU, BGP, OSPF, VRFs, link aggregation, firewalling, NAT, load balancing, and network troubleshooting.
• Experience in DoW, federal civilian, intelligence community, or other highly regulated environments with formal change control, security approval, documentation, and audit requirements.
• Working knowledge of RMF, ATO, DISA STIGs, POA&Ms, vulnerability management, security controls, continuous monitoring, and remediation of applicable security findings
• Strong written and verbal communication skills, including technical diagrams, implementation plans, SOPs, security documentation, and executive-ready status updates.
• Strong written and verbal communication skills, including technical diagrams, implementation plans, SOPs, security documentation, and executive-ready status updates.

Desired Skills

• Experience designing or supporting VMware Cloud Foundation, including SDDC Manager, workload domains, lifecycle management, vSphere, and NSX integration.
• Experience with VXLAN/Geneve overlays, BGP underlay/overlay routing, multi-rack architectures, and highly available network services.
• Automation / Infrastructure as Code experience using PowerShell/PowerCLI, Ansible, VMware Aria Automation, REST APIs, Git, YAML, and JSON. Experience integrating NSX telemetry and logs with Splunk, Elastic, or comparable SIEM/observability platforms.
• Experience with enterprise PKI, certificate lifecycle management, Active Directory, LDAP, identity federation, RBAC, privileged-access management, and MFA.
• Experience supporting classified, disconnected, air-gapped, or tactical-edge environments. Familiarity with Dell PowerEdge, Cisco UCS, HPE, DISA STIG Viewer, SCAP scanning, ACAS/Nessus, and POA&M remediation workflows.
• Experience integrating NSX with Cisco Nexus, Juniper, Palo Alto Networks, F5, or similar enterprise technologies.

Abile Group, founded in July 2004 to support the Intelligence Community and its contractors across Enterprise Analytics, IT & Systems Engineering, and Program & Project Management, merged with Valiant Solutions in January 2026 - an established provider of cybersecurity technologies and services for Federal Agencies since 2005. Together, this partnership creates a stronger, more integrated cybersecurity organization with expanded opportunities for employees, deeper technical collaboration, and a unified mission. With significant experience serving the Federal Government, we remain dedicated to our employees and clients and seek high‑performing professionals who excel at providing guidance, developing solutions, and delivering implementation support that blends industry best practices with client expertise and Abile’s broad technical capabilities.

Abile is committed to hiring the most qualified and best fit person for the job - always has, always will. Anyone requiring reasonable accommodations should email [e-mail] with requested details. A member of the HR team will respond to your request within 2 business days.