We are the people behind Ireland's electricity grid. Our company operates the power system with world leading levels of variable asynchronous renewable generation, ensuring that everyone has power when they need it.
The Opportunity
The Principal Network Security Engineer is an exciting role in a well-established Enterprise Security team.
You will assist in the operation and development of IT security solutions across a variety of technical platforms, data networks and security domains.
The solutions involved underpin the organisation's corporate, market and power system operational functions.
Key Responsibilities
* Design and implement secure network solutions that align with the organisation's security policies and business goals.
* Recommend and evaluate new network security technologies and solutions.
* Configure and manage next gen firewalls, intrusion detection/prevention systems (IDS/IPS), network access control (NAC), and virtual private networks (VPN).
* Implement and maintain secure connectivity solutions for on-premises, cloud, and hybrid environments.
* Support and optimise a variety of security or network operational solutions that facilitate event data collection, systems monitoring, threat detection, vulnerability management, perimeter defences, enterprise password management and network infrastructure management such as email and web gateways.
* Create and maintain comprehensive documentation for network security designs, configurations, and procedures.
* Respond to security incidents that have been escalated from a Tier 1 Security Operations Centre by carrying out advanced analysis and remediation whilst overseeing the necessary engagement with internal stakeholders and external security partners.
About You
The successful candidate will have:
* Qualification in a relevant technical discipline and typically 10 years' experience in network security engineering or related roles.
* Expertise in designing and implementing secure network infrastructures.
* Hands-on experience with firewalls IDS/IPS, and VPNs.
* Strong knowledge of security protocols and technologies.
* Familiarity with cloud security (e.g., Azure Cloud).
* Experience with network security standards and frameworks (e.g., NIST CSF, CIS Controls).
* Proficiency in scripting and automation (e.g., Python, Power Shell) for network security tasks.
* Professional certifications such as CISSP, CCIE Security, or Azure Certified Security.
* Experience with Zero Trust architecture principles plus knowledge of security information and event management (SIEM) tools.
* Strong understanding of identity and access management (IAM) within a network context.
* An understanding of the cyber threat landscape including the analysis of multiple sources of intelligence and communication of results.
* Technical knowledge of IT Infrastructure ideally including security appliances, vulnerability management tools, directory services, host-based security technologies, data networks and protocols.
* Knowledge and experience in the implementation of resilient network security solutions.
* A security or networks industry certification and familiarity with cyber security frameworks (e.g. NIST) and standards (e.g. ISO 27001) would also be an advantage.