Role Title:
Infrastructure Engineer
Business Area:
Managed Services
About This Role:
Eir Business is seeking a Senior Network Security Engineer to join a team of network and security infrastructure professionals delivering managed network services to a large Irish enterprise client. You will act as a senior SME, engaging with engineers, management, and customer stakeholders to define solution approaches, agree maintenance objectives, introduce new capabilities, and drive issue resolution. You will initiate technical improvements and demonstrate leadership across the security infrastructure domain.
This is a hands‑on role covering solution design and delivery, plus the management and operation of critical infrastructure to a high standard. Strong troubleshooting skills are essential.
As the client progresses its cloud-native agenda, you will also support cloud delivery principles, including IaC, DevOps practices, and automation tooling.
Expectations From The Role:
Provide hands‑on design, delivery, operation of critical network and security platforms to a high operational standard.
Support incident response, troubleshooting and RCA across security infrastructure.
Perform planned changes, upgrades, patching, and lifecycle management of network and security platforms.
Manage infrastructure reliability, ensuring availability, performance, resilience, and compliance with agreed SLAs.
Contribute to and validate high‑level and low‑level designs, ensuring secure, scalable, and supportable solutions.
Requirements For A Successful Application:
Foundational skills
Strong core skills in networking, firewalls, network security infrastructure.
Advanced level: +10 years experience – CCNP/CCSP grade or higher.
Proven experience in large site environments within solution design, deployment delivery and management.
Focused skillsets;
Advanced Cisco routing and switching, ACI and Firepower firewall technology
Advanced Checkpoint or similar Next-Gen enterprise firewall with exposure to solution design, install, patch, maintain, operate
Security engineer practitioner mindset with practical experience managing Next-Gen security features such as IDS/IPS, Advanced Persistent Threat Protection, Anti-Malware, App Control / Web filtering and SSL Inspection.
Experience deploying and managing virtual network and security infrastructure in multi-cloud environments
Other core techs such as F5, Citrix Netscaler, VPNs, Wifi, ISPs, DDoS, management platforms, AAA frameworks and perimeter hygiene solutions a plus.
Cloud / Devops exposure
Experience with Azure cloud networking, VMSS, Terraform and automation tooling a strong plus.
Others:
Experience - Min 8-10 years industry experience
Industry Background – Comms/ICT
Knowledge of Business core ICT solutions portfolio
Knowledge of Fixed Line Telecoms technology and infrastructure
Key Performance Indicators:
SLA Metrics
Adherence to Performance Management process.
Customer satisfaction metrics
On line resolution
Customer Experience improvements related to delivery
Support ISO compliance
eir reserves the right to conduct appropriate suitability checks in relation to prospective employees including but not limited to reference checking and/or other searches using publicly available information.
We are committed to creating an inclusive and supportive work environment. If you require any reasonable adjustments during the application or interview process, please let us know, and we will work with you to meet your needs
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