Principal OpenShift Networking Architect

Test Triangle Ltd; Dublin; Hybrid; EUR 120,000 - 160,000; Full time

Job summary

Test Triangle in Dublin 18 is seeking a Principal OpenShift Networking Architect to own networking architecture for OpenShift Container Platform and OpenShift Virtualisation. The role focuses on future-state networking, segmentation, and connectivity across container and VM workloads, including NSX policy rationalisation into OpenShift-native models.

The candidate will lead the transition to OpenShift-native security controls, producing high-level designs and guiding implementation teams with

Qualifications

• 10+ years of enterprise networking and infrastructure experience.
• 5+ years hands-on Kubernetes networking experience.
• Strong OpenShift networking experience in 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.
• Experience translating existing NSX Firewall policies into Kubernetes-native segmentation models.

Responsibilities

• Lead the transition from traditional NSX-based segmentation to OpenShift-native networking and security controls.
• Discover, analyse and rationalise NSX policies into scalable OpenShift-native patterns for containers and VMs.
• Define standards, produce architecture deliverables and guide implementation teams.
• Provide technical leadership around network isolation, multi-tenancy and micro-segmentation.
• Evaluate and implement modern Kubernetes networking platforms such as OVN-Kubernetes or Calico Enterprise.

Skills

OpenShift networking

Kubernetes networking

Network architecture

Zero Trust networking

Multus & CNI

Namespace isolation

VM networking

NSX to OpenShift transition

Tools

OpenShift

Kubernetes

OVN-Kubernetes

Cilium

Calico

Isovalent Enterprise

Calico Enterprise

Job description

Test Triangle | Full time

Dublin 18, Ireland | Posted on 09/01/2026

Job Description – Principal OpenShift NetworkingArchitect

Location: Dublin 18 (2 days onsite per week)

Duration: Until the end of the year, likely to beextended

Summaryof this role: his resource will ownthe networking architecture for the OpenShift Container Platform and OpenShiftVirtualisation platforms. They will be responsible for defining thefuture-state networking, segmentation and connectivity model across containerand virtual machine workloads, including evaluation of modern Kubernetesnetworking and micro-segmentation technologies.

A keyresponsibility will be leading the transition from traditional NSX-basedsegmentation models to OpenShift-native networking and security controls,including the discovery, analysis and rationalisation of existing NSXDistributed Firewall policies into scalable OpenShift-native segmentationpatterns for both container and virtual machine workloads.

This isa hands-on architecture role rather than a traditional network infrastructurerole. The successful candidate must be a recognised OpenShift/Kubernetesnetworking specialist capable of defining standards, producing architecturedeliverables, guiding implementation teams and providing technical leadershiparound network isolation, multi-tenancy, virtualisation networking andsoftware-defined networking.

Skillsetand background:

• 10+ years ofenterprise networking and infrastructure experience
• 5+ years of hands-onKubernetes networking experience
• Strong OpenShiftnetworking experience within large enterprise or regulated environments
• Expert knowledge ofOVN-Kubernetes architecture, operation and troubleshooting
• Expert knowledge ofKubernetes networking constructs including Services, Ingress, Egress andNetwork Policies
• Hands-on experiencewith Multus and secondary network architectures
• Strong understandingof namespace isolation, multi-tenancy and Kubernetes micro-segmentation
• Experiencetranslating existing VMWare NSX Firewall and micro-segmentation policiesinto Kubernetes-native segmentation models using OpenShift NetworkPolicies, Admin Network Policies, Cilium or Calico
• Strong understandingof the challenges associated with migrating from VM-based securitycontrols to container and OpenShift-native security architectures
• Experience definingand implementing Zero Trust networking architectures
• Hands-on experiencewith OpenShift Virtualisation and KubeVirt networking models
• Experienceevaluating and implementing modern Kubernetes networking platforms such asOVN-Kubernetes, UDN/CUDN, Isovalent Enterprise for Cilium, CalicoEnterprise or equivalent
• Ability to produceHigh-Level Designs (HLDs), Low-Level Designs (LLDs), standards andreference architectures
• Strong stakeholdermanagement and technical leadership skills
• Red Hat OpenShiftcertifications or equivalent Kubernetes networking certifications would beadvantageous

Requirements

• OpenShift NetworkingReference Architecture
• Container and VMSegmentation Strategy
• Multi-Tenancy DesignStandards
• Network PolicyFramework
• SDN/CNI Assessmentand Recommendations
• Network Security andMicro-Segmentation Architecture