OT Cybersecurity Senior Professional

Position description

The Generation Engineering Department in Engineering and Major Projects is the Centre of Engineering for ESB’s generation businesses and provides consultancy services in generation technology for the generation business. This includes optimising the long-term performance of the Generation Assets through process performance optimisation and portfolio long-term asset management, as well as continuously driving improvements in overhaul management, safety, technical and engineering standards, and the delivery of new power plant projects as part of the ESB Strategy on “Net Zero by 2040”.

To enable and support this, we currently have an opportunity for an OT Cybersecurity Senior Professional to join our Generation Engineering team. The successful candidate will report to the OT Cybersecurity Lead and support ESB in the delivery of Generation projects such as the development of new build zero and low carbon generation assets and renewal of existing assets within ESB’s plant portfolio and for international clients.

The OT Cybersecurity Senior Professional is part of the C&I Team and will report to the OT Cybersecurity Team Lead. The purpose of the role is to support maintaining a strong cyber security posture across the ESB Generation portfolio. It will cover a range of activities in alignment with the generation cybersecurity operating model, the cybersecurity plan, assisting in the assessment, audit, and review process, and existing or emerging vulnerabilities and threats that could impact the Operational Technology environment in the generation business.

Key Responsibilities

• Lead and support Generation's Operational Technology (OT) cybersecurity and NIS Directive compliance programme, ensuring adherence to regulatory, corporate, and industry security standards.

• Conduct cybersecurity risk, vulnerability, and compliance assessments across OT environments, including SCADA, DCS, SIS, PLC, NMS, and industrial control systems, and develop appropriate mitigation plans.

• Design, implement, and maintain OT cybersecurity controls, networks, and security technologies, including firewalls, intrusion detection systems, antivirus solutions, Active Directory, SIEM, backup, and related infrastructure.

• Collaborate with Generation, IT, Engineering, suppliers, and cybersecurity teams to embed security-by-design principles into projects, system upgrades, and new technology deployments.

• Support cybersecurity operations through asset inventory management, vulnerability management, patching, security configuration, incident response coordination, and liaison with the central Security Operations Centre (SOC).

• Prepare and maintain cybersecurity documentation, policies, procedures, audit evidence, and governance artefacts to support regulatory compliance, audits, and continuous improvement initiatives.

• Provide OT cybersecurity expertise, training, awareness, and guidance to internal stakeholders while promoting a strong safety culture and leading cybersecurity improvement projects across the Generation portfolio.

Experience and Qualifications

Essential

• 5 years of relevant working experience in the generation sector or a comparable industry in OT Cybersecurity, with proven experience in cybersecurity roles, with specific expertise in OT/ICS security.

• In-depth knowledge of industrial control systems, SCADA, DCS, SIS, PLC, and other OT technologies and communication protocols including ffamiliarity with cybersecurity frameworks such as the ISO 27001, NIST Cybersecurity Framework, Cyber Assessment Framework, and IEC/ISA 62443.

• Hands-on experience with tools for Active Directory, SIEM, Firewall, IDS, Antivirus, Backup etc.

• Demonstrated internal and external stakeholder management and project/scope coordination involving multiple stakeholders, contractors or third parties.

• Self-motivated individual with the drive to professionally develop self and others and share knowledge and competencies within a team structure.

• Strong analytical and problem-solving skills, with the ability to assess complex systems and identify security risks with ability to work independently and in a team environment to pinpoint root causes and devise solutions with minimal oversight.

• Well-versed with Health, Safety and Environment Standards and procedures, including Risk Assessment and Method Statement.

• Full clean driving license and flexibility to travel nationally and internationally.

Desirable

• Experience in developing security policies, standards, and procedures.

• Familiarity with threat intelligence, vulnerability assessment, Identity management, and incident response.

Qualifications

Essential

• The candidate will hold a 3rd-level qualification or equivalent in engineering or equivalent with experience in OT and C&I technologies, projects, and practices.

Desirable

• Preferable certifications in ISA 62443 Expert, CCNP, ICS-CERT, or SANS etc.

• OEM Certified training on the control systems and safety systems.

• Demonstrated active engagement with engineering institutions or professional societies for embedding good engineering and industrial cybersecurity practice in projects and work practices.  

Location

This position is based at either The Sidings, Dublin or Eastgate Offices, Cork and will involve occasional travel. Tailored working arrangements will be considered with the operational requirements of the role and in alignment with the ESB SMART Working model and OT Team Charter.

Smart Working at ESB is designed to make ‘in-person’ time together as purposeful as possible while also enabling the effective use of digital tools and hybrid arrangements to preserve our commitment to flexibility. The successful candidate may work flexibly within the jurisdiction where they have been employed, with attendance at the workplace for in-person collaboration at least two days per week. All Smart Working arrangements are subject to regular review based on the operational requirements of the role, the team, and the business.

Reporting To

OT Cybersecurity Lead, Generation Technology

Why Work with Us?

• Opportunity to lead Ireland’s transition to net zero carbon future

• Career development through mentoring and training

• Corporate Social Responsibility Opportunities

• Sports and Social Clubs

• Networking opportunities

• Credit Union

• Generous Pension

• Access to staff well-being programmes

• Generous parental leave entitlements

• Strong values-based and inclusive culture

• Strong commitment to diversity, equity and inclusion

• Great team environment working to our Core Values: Courageous, Caring, Driven and Trusted

Salary

€59,000-€70,000

Closing Date

19th August 2026

Interview

Candidates who are shortlisted for interview will complete a Behavioural Interview based on each of the following Behaviours, which underpin how we work at ESB and are critical to delivering our strategy:

• Accountable and Ethical

• Collaborative

• Growing and Adaptive

• Proactive

• Respectful and Supportive

More information available on Our People Promise

Notes

Your application will be held in reserve for 6 months should you be suitable for the role.

The successful candidate will be required to evidence their right to work in the Republic of Ireland / UK prior to commencement of employment.