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L3 Support Engineer

Location: Ireland

Work Type: Permanent / Full Time

Job Ref: 1317855


We are seeking an experienced Level 3 Support Engineer with strong infrastructure and cloud expertise to support, maintain, and evolve our IT environments. This role goes beyond traditional support and includes on-prem to cloud migrations, server and virtualisation management, and automation through Infrastructure as Code and scripting.
You will act as a technical escalation point while also contributing to infrastructure projects and continuous improvement initiatives.

Key Responsibilities
  • Act as 3rd line escalation support for complex infrastructure and cloud-related issues
  • Lead and support on-premises to cloud migrations (planning, execution, and post-migration support)
  • Administer and support Windows/Linux servers (physical and virtual)
  • Manage and support VMware environments (ESXi, vCenter)
  • Design, deploy, and support Azure infrastructure (VMs, networking, storage, identity)
  • Implement and maintain Infrastructure as Code (IaC) using tools such as Terraform, ARM, or Bicep
  • Automate infrastructure tasks using scripting (PowerShell, Bash, Python)
  • Build, configure, and maintain virtual machines in both on-prem and cloud environments
  • Monitor system performance, availability, and security
  • Collaborate with internal teams on infrastructure upgrades, optimisation, and resilience
  • Create and maintain technical documentation and runbooks
  • Provide mentoring and technical guidance to L1/L2 engineers
Key Skills & Experience Essential
  • Proven experience in a Level 3 / Senior Support / Infrastructure Engineer role
  • Strong experience with on-prem to cloud migrations
  • Hands-on server administration (Windows and/or Linux)
  • Solid experience with VMware virtualisation
  • Strong Microsoft Azure experience
  • Experience using Infrastructure as Code (IaC)
  • Scripting experience (PowerShell essential, Bash/Python beneficial)
  • Strong troubleshooting and root cause analysis skills
Desirable
  • Azure certifications (AZ-104, AZ-305, etc.)
  • Experience with backup, DR, and high availability solutions
  • Knowledge of networking concepts (firewalls, VPNs, DNS, routing)
  • Experience working in ITIL-based support environments