Onsite_Vmware NSX Security Engineer_Spring TX

Themesoft Inc; Spring (TX); On-site; USD 110,000 - 179,000; Full time

Job summary

The NSX Security Engineer at Themesoft Inc will be responsible for the architecture, deployment, configuration, and day-to-day administration of network virtualization and security policies within our VMware infrastructure. This role bridges traditional networking, cloud infrastructure, and cybersecurity to enforce a zero-trust posture across hybrid cloud workloads.

As a hands-on position, you will design micro-segmentation, manage NSX components, and develop IaC and automation to ensure

Qualifications

• Architecture, deployment, configuration and day-to-day administration of network virtualization and security policies in VMware infrastructure.
• Bridge between traditional networking, cloud infrastructure and cybersecurity.

Responsibilities

• Security Architecture & Micro-segmentation: design and enforce granular distributed firewall rules.
• Network Virtualization Management: deploy and manage logical switching, tier-0/tier-1 routing, distributed load balancers and VPNs.
• Lifecycle Management: maintain NSX Managers, Edge Nodes, Transport Nodes; perform upgrades and patches.
• Infrastructure Automation: develop IaC and scripts for security rule deployment and disaster recovery readiness.
• Monitoring & Log Analysis: audit health, capacity, and security logs with VMware Aria Operations, Network Insight, or SIEMs like Splunk.
• Cross-Team Collaboration: work with systems engineers, network admins, and SOC.
• Incident Response Support: assist in deep-packet inspection and emergency isolation.

Skills

VMware NSX

vSphere ESXi

Network Security

Firewall Rules

Tools

PowerShell

PowerCLI

Python

Terraform

NSX REST API

Job description

Job Id : OOJ - 27234

Posted Date : 09/23/2026

Experience : -

Job Type : Contractual

Location : Spring, TX

Overview

• Location: Spring TX
• Duration: 6-12+ Months
• Employment Type:100% ONSITE ROLE
• VMware Ecosystem: Deep hands-on experience with VMware vSphere, ESXi, vCenter, and comprehensive NSX-T/NSX architecture.
• Core Networking Protocols: Expert-level knowledge of BGP, OSPF, Geneve/VXLAN overlay encapsulation, VLANs, and TCP/IP stack
• Role Descriptions: VMware NSX Security Engineer / Administrator

Job Summary

The NSX Security Engineer is responsible for the architecture| deployment| configuration| and day-to-day administration of network virtualization and security policies within our VMware infrastructure.

This role bridges the gap between traditional networking| cloud infrastructure| and cybersecurity.

The primary objective is to enforce a zero-trust network posture by configuring advanced logical routing| distributed firewalls| and micro-segmentation strategies across hybrid cloud workloads.

Key Responsibilities

• Security Architecture & Micro-segmentation: Design and enforce granular distributed firewall (DFW) and Gateway Firewall rules. Isolate virtual machines and applications to prevent lateral "east-west" threat propagation.
• Network Virtualization Management: Deploy and manage logical switching| tier-0/tier-1 routing| distributed load balancers| and VPNs within VMware NSX environments.
• Lifecycle Management: Handle regular maintenance| component scaling| software upgrades| patches| and configurations of NSX Managers| Edge Nodes| and Transport Nodes.
• Infrastructure Automation: Develop infrastructure-as-code (IaC) and automation scripts to streamline security rule deployment and ensure consistent disaster recovery readiness.
• Monitoring & Log Analysis: Audit infrastructure health| capacity| and security event logs utilizing tools like VMware Aria Operations (formerly vRealize)| Network Insight| or third-party SIEM platforms like Splunk.
• Cross-Team Collaboration: Work alongside systems engineers| traditional network administrators| and the Security Operations Center (SOC) to troubleshoot physical-to-virtual network overlays.
• Incident Response Support: Assist security incident teams by performing deep-packet inspection| tracing network flows| and applying emergency isolation rules during an active breach.

Technical Requirements & Skills

• VMware Ecosystem: Deep hands-on experience with VMware vSphere| ESXi| vCenter| and comprehensive NSX-T/NSX architecture.
• Core Networking Protocols: Expert-level knowledge of BGP| OSPF| Geneve/VXLAN overlay encapsulation| VLANs| and TCP/IP stack.
• Firewalling & Security: Strong understanding of Layer 4-7 firewall rules| intrusion detection/prevention systems (IDS/IPS)| and zero-trust concepts.
• Automation/Scripting: Proficiency with PowerShell/PowerCLI| Python| Terraform| or interacting directly with NSX REST APIs.
• Third-Party Integration: Familiarity with integrating NSX with physical next-gen firewalls (e.g.| Palo Alto Networks| Check Point) or cloud networking environments like AWS and Azure.

Preferred Certifications

VMware Certified Professional Network Virtualization (VCP-NV)VMware Certified Advanced Professional Network Virtualization (VCAP-NV Design or Deploy) Cisco Certified Network Associate (CCNA) or Professional (CCNP) [1| 2]

Work Authorization

Applicants must be legally authorized to work in the United States.

Equal Employment Opportunity

[Themesoft Inc] is an Equal Employment Opportunity employer. We consider qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other status protected by applicable federal, state, or local law.

Skills

OSPF,VMWARE NSX,VLANS,VMWARE,AWS,VXLAN,VMWARE VSPHERE,AZURE