Network Support Specialist - Sovereign Core

IBM
IBM

Customer Service

Dublin, Ireland

Posted on May 18, 2026
Introduction

At IBM Software, we transform client challenges into solutions. Building the world’s leading AI-powered, cloud-native products that shape the future of business and society. Our legacy of innovation creates endless opportunities for IBMers to learn, grow, and make an impact on a global scale. Working in Software means joining a team fueled by curiosity and collaboration. You’ll work with diverse technologies, partners, and industries to design, develop, and deliver solutions that power digital transformation. With a culture that values innovation, growth, and continuous learning, IBM Software places you at the heart of IBM’s product and technology landscape. Here, you’ll have the tools and opportunities to advance your career while creating software that changes the world.

Your role and responsibilities

Role Overview

IBM Sovereign Core is shaping the future of cloud and AI, for governments, public institutions and highly regulated enterprises by placing sovereignty, governance, and trust at the center of the platform.

As a Senior Customer Support Engineer in IBM Sovereign Core, you will serve as a key technical specialist responsible for supporting highly secure, sovereign cloud environments. deployed across on‑premises, partner‑operated, and fully isolated (air‑gapped) infrastructures, built on Red Hat OpenShift and integrated with IBM’s AI, automation, and governance capabilities.

You will handle complex incidents, provide deep troubleshooting expertise, and work closely with customers operating in highly regulated and jurisdiction‑sensitive environments.

We are seeking a highly skilled Senior Network Support Specialist to help troubleshoot large‑scale, mission‑critical secure environments. This role focuses on advanced problem resolution, customer trust, and technical depth, with growing influence across teams and environments. You will work across modern data‑center architectures, cloud‑native platforms, and highly regulated infrastructures ensuring network services are resilient, robust, and high‑performing. Operate as a senior, independent resolver for complex issues, provide technical leadership in incident handling, and partnering effectively across teams.

Due to the nature of this role and the associated client requirements, which include working with EU‑based customers in a sovereign environment, applicants must, by the job start date, lawfully reside in, be legally authorized to work in, and perform the role exclusively within the EU country of employment.

Required education
None
Preferred education
Bachelor's Degree
Required technical and professional expertise
  • Strong hands-on troubleshooting across TCP/IP, DNS, routing, and firewall/ACL controlled environments, with the ability to isolate fault domains quickly and accurately.
  • Deep operational knowledge of Red Hat OpenShift/Kubernetes networking, including pod/service networking, OpenShift Routes/Ingress Controllers, and NetworkPolicy-driven segmentation.
  • Experience supporting restricted and disconnected (air-gapped) environments, including internal registries/mirrors, proxy-controlled egress, and tightly governed network change processes.
  • Support and troubleshoot BGP edge and internal routing issues
  • Diagnose and resolve control plane and data plane failures
  • Support multi-tenant isolation using VLAN, VXLAN, and EVPN
  • Confident communicator who can work effectively with customer network/security teams and internal engineering/SRE to resolve complex incidents under strict sovereignty and compliance constraints.

This role may require candidates to contribute to a shared shift and on‑call rotation as part of collaborative incident response support.

Preferred technical and professional experience

Preferred Additional Skills

  • MetalLB and Load Balancer Operations

Experience configuring and troubleshooting MetalLB , including VIP management, failover behaviour, and load‑balancer troubleshooting.

  • ACM Multi‑Cluster Networking

Experience supporting hub-spoke network topologies for managed clusters, including cross‑cluster connectivity and consistent network‑policy enforcement across multi‑cluster environments.

  • NetBox IPAM / DCIM Operations

Hands‑on experience with NetBox data model and API usage, network device inventory management, and integration with network automation tools.

ABOUT BUSINESS UNIT

IBM Software infuses core business operations with intelligence—from machine learning to generative AI—to help make organizations more responsive, productive, and resilient. IBM Software helps clients put AI into action now to create real value with trust, speed, and confidence across digital labor, IT automation, application modernization, security, and sustainability. Critical to this is the ability to make use of all data, because AI is only as good as the data that fuels it. In most organizations data is spread across multiple clouds, on premises, in private datacenters, and at the edge. IBM’s AI and data platform scales and accelerates the impact of AI with trusted data, and provides leading capabilities to train, tune and deploy AI across business. IBM’s hybrid cloud platform is one of the most comprehensive and consistent approach to development, security, and operations across hybrid environments—a flexible foundation for leveraging data, wherever it resides, to extend AI deep into a business.

YOUR LIFE @ IBM

In a world where technology never stands still, we understand that, dedication to our clients success, innovation that matters, and trust and personal responsibility in all our relationships, lives in what we do as IBMers as we strive to be the catalyst that makes the world work better.

Being an IBMer means you’ll be able to learn and develop yourself and your career, you’ll be encouraged to be courageous and experiment everyday, all whilst having continuous trust and support in an environment where everyone can thrive whatever their personal or professional background.

Our IBMers are growth minded, always staying curious, open to feedback and learning new information and skills to constantly transform themselves and our company. They are trusted to provide on-going feedback to help other IBMers grow, as well as collaborate with colleagues keeping in mind a team focused approach to include different perspectives to drive exceptional outcomes for our customers. The courage our IBMers have to make critical decisions everyday is essential to IBM becoming the catalyst for progress, always embracing challenges with resources they have to hand, a can-do attitude and always striving for an outcome focused approach within everything that they do.

Are you ready to be an IBMer?

ABOUT IBM

IBM’s greatest invention is the IBMer. We believe that through the application of intelligence, reason and science, we can improve business, society and the human condition, bringing the power of an open hybrid cloud and AI strategy to life for our clients and partners around the world.

Restlessly reinventing since 1911, we are not only one of the largest corporate organizations in the world, we’re also one of the biggest technology and consulting employers, with many of the Fortune 500 companies relying on the IBM Cloud to run their business.

At IBM, we pride ourselves on being an early adopter of artificial intelligence, quantum computing and blockchain. Now it’s time for you to join us on our journey to being a responsible technology innovator and a force for good in the world.

IBM is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, genetics, pregnancy, disability, neurodivergence, age, or other characteristics protected by the applicable law. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.

OTHER RELEVANT JOB DETAILS

For additional information about location requirements, please discuss with the recruiter following submission of your application.

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