Cyber Security Specialist

Position DescriptionThe purpose of the role is to help maintain a strong cyber security posture across ESB Networks Assets Systems. It will cover a range of activities including supporting ESBN management in the delivery of the cyber security plan, assisting in the audit and review process and proactively managing emerging threats that could impact the Operational Technology environment. The successful candidate will carry out, monitor and improve the cybersecurity processes and controls in place within Operations Systems, to facilitate NIS2 Directive compliance. They will work closely with the system vendors, Corporate Cybersecurity, Telecoms and ITD teams.As a subject matter expert, they will provide support to the OT and IT teams by helping to identify emerging threats, conducting risk assessments and establishing how best to mitigate the associated risks.Key ResponsibilitiesReview and stay current on NIS2 Directive regulations and industry cybersecurity trends and also help identify potential NIS Directive compliance gaps in our systems and establish mitigation plans including remediation program to mitigatePerform ongoing monitoring to ensure operations systems cybersecurity processes and technology solutions continue to support NIS2 Directive complianceCoordinate with the Systems teams, Corporate Cybersecurity (Enterprise Services), Telecoms and IT teams to ensure systems processes and technical solutions meet cybersecurity requirements. This also includes working with the above teams on cybersecurity issues and incidents and on cyber security improvement initiativesKeep incident runbooks and DR plans current. Manage inventory of network device information and configurations for the systemsDevelop status reports and metrics to provide visibility on overall cybersecurity posture and NIS2 Directive compliance status Preparation of documentation in support of audits and compliance to Corporate and/or NIS2 Directive requirements. Support interactions with internal audit and external regulatory bodies during audits or other required meetingsWork closely with vendors to complete reviews, vulnerability assessments, mitigations & other various cybersecurity related activates as neededMonitor system performance, connectivity, resource utilization and alert logs from Tenable Security Centre. Assist with system upgrades including patches and security configurationsCarrying out cyber security risk assessments for new or existing OT systems. Perform rule reviews on Operation Systems firewallsProvide subject matter expertise in cybersecurity and help broaden knowledge of other staff membersEssentialExperience and Qualifications Excellent analytical and problem-solving skillsAbility to work independently and in a team environment to pinpoint root causes and devise solutions with minimal oversightAbility to coordinate multi assignments and manage deadlinesDesirableIdeally, an Engineering background with experience working in an Electrical, Telecoms or Control and Instrumentation discipline having knowledge of a typical SCADA control systemExperience in cyber security concepts gained from working within an Operational Technology environmentKnowledge of communication protocols (IEC 101, IEC 104 etc.) that interact with Control SystemsAn understanding of security frameworks e.g., NIS Directive, IEC 602443 and Purdue Enterprise Reference ArchitectureUnderstanding of security principles and knowledge of cyber security technologiesUnderstanding of network architecture and topologies and be able to perform monitoring and trouble shooting of cyber security problemsStrong level of understanding of IT/OT security principles, technologies, and best practicesQualificationsEither 3rd Level qualification or equivalent work experience (min 7-10 years) is essential. LocationESB Networks Leopardstown office. Tailored working arrangements may be feasible and will be positively considered within the operational requirements of the role.ESB is committed to smart working – combining digital tools with a culture of trust and empowerment to enable flexible ways of working. The successful candidate may work flexibly within their jurisdiction with attendance at the workplace for in-person collaboration on at least one anchor day per week. All smart working arrangements are subject to manager approval and ongoing review, based on the operational requirements of the role, the team, and the individual.Reporting To System Protection & Earthing Manager, Network Assets, ESB NetworksWhy Work with Us?Opportunity to lead Ireland’s transition to net zero carbon futureCareer development through mentoring and training Corporate Social Responsibility OpportunitiesSports and Social ClubsNetworking opportunitiesCredit UnionGenerous PensionAccess to staff well-being programmesGenerous parental leave entitlementsStrong values-based and inclusive culture Strong commitment to diversity, equity and inclusion Great team environment working to our Core Values: Courageous, Caring, Driven and TrustedSalary€69,000 - €81,000 per annum.Closing Date18th of November, 2025. Your application will be held in reserve for 6 months should you be suitable for the role.