Principal OpenShift Networking Architect

Test Triangle Limited; Dublin; Hybrid; EUR 140,000 - 180,000; Full time

Job summary

Test Triangle Limited in Dublin is seeking a Principal OpenShift Networking Architect to own network architecture for OpenShift and OpenShift Virtualisation platforms. The role requires defining future-state networking, segmentation, and connectivity across container and VM workloads.

The candidate will lead the transition from NSX-based segmentation to OpenShift-native models, ensuring scale and security across environments. Strong hands-on expertise and architecture delivery are essential.

Qualifications

• 10+ years of enterprise networking and infrastructure experience

Responsibilities

• Own the networking architecture for OpenShift Container Platform and OpenShift Virtualisation platforms.
• Lead transition from NSX-based segmentation to OpenShift-native networking and security controls.
• Define standards, produce architecture deliverables, and guide implementation teams around network isolation and micro-segmentation.
• Translate existing NSX Firewall policies into Kubernetes-native segmentation models using OpenShift Network Policies and Calico/Cilium.

Skills

OpenShift networking

Kubernetes networking

NSX to OpenShift migration

OVN-Kubernetes

Network policies

Multi-tenancy

Security architectures

Technical leadership

KubeVirt/OpenShift Virtualisation

HLD/LLD

Education

Red Hat OpenShift certifications

Tools

Multus

Calico

Cilium

OVN-Kubernetes

Isovalent Enterprise

KubeVirt

Job description

Full time | Test Triangle | Ireland

Posted On 01/09/2026

Job Information

Work Experience 10+ Years

City Dublin 18

State/Province Dublin

D18

Job Description

Job Description – Principal OpenShift Networking Architect

Location: Dublin 18 (2 days onsite per week)

Duration: Until the end of the year, likely to be extended

Summary of this role: his resource will own the networking architecture for the OpenShift Container Platform and OpenShift Virtualisation platforms. They will be responsible for defining the future-state networking, segmentation and connectivity model across container and virtual machine workloads, including evaluation of modern Kubernetes networking and micro-segmentation technologies.

A key responsibility will be leading the transition from traditional NSX-based segmentation models to OpenShift-native networking and security controls, including the discovery, analysis and rationalisation of existing NSX Distributed Firewall policies into scalable OpenShift-native segmentation patterns for both container and virtual machine workloads.

This is a hands-on architecture role rather than a traditional network infrastructure role. The successful candidate must be a recognised OpenShift/Kubernetes networking specialist capable of defining standards, producing architecture deliverables, guiding implementation teams and providing technical leadership around network isolation, multi-tenancy, virtualisation networking and software-defined networking.

Skillset and background:

• 10+ years of enterprise networking and infrastructure experience
  
• 5+ years of hands-on Kubernetes networking experience
  
• Strong OpenShift networking experience within large enterprise or regulated environments
  
• Expert knowledge of OVN-Kubernetes architecture, operation and troubleshooting
  
• Expert knowledge of Kubernetes networking constructs including Services, Ingress, Egress and Network Policies
  
• Hands-on experience with Multus and secondary network architectures
  
• Strong understanding of namespace isolation, multi-tenancy and Kubernetes micro-segmentation
  
• Experience translating existing VMWare NSX Firewall and micro-segmentation policies into Kubernetes-native segmentation models using OpenShift Network Policies, Admin Network Policies, Cilium or Calico
  
• Strong understanding of the challenges associated with migrating from VM-based security controls to container and OpenShift-native security architectures
  
• Experience defining and implementing Zero Trust networking architectures
  
• Hands-on experience with OpenShift Virtualisation and KubeVirt networking models
  
• Experience evaluating and implementing modern Kubernetes networking platforms such as OVN-Kubernetes, UDN/CUDN, Isovalent Enterprise for Cilium, Calico Enterprise or equivalent
  
• Ability to produce High-Level Designs (HLDs), Low-Level Designs (LLDs), standards and reference architectures
  
• Strong stakeholder management and technical leadership skills
  
• Red Hat OpenShift certifications or equivalent Kubernetes networking certifications would be advantageous
  

Requirements

• OpenShift Networking Reference Architecture
  
• Container and VM Segmentation Strategy
  
• Multi-Tenancy Design Standards
  
• Network Policy Framework
  
• SDN/CNI Assessment and Recommendations
  
• Network Security and Micro-Segmentation Architecture