Select how often (in days) to receive an alert:Job Title: Senior OT Security SpecialistFunction: TechnologyReports to: ICT Security managerLocation: DublinOrnua is a leading dairy co-operative which sells premium dairy products globally on behalf of its Member Co-operatives, Ireland’s dairy processors and, in turn, Irish dairy farmers.Ornua has revenues of €3.4 billion and is supported by a global team of approximately 2,800 employees. The Group operates as a commercial organisation across 10 business units, including 12 production facilities located in Europe, North America, the Middle East and Africa.The commercial organisation is responsible for the marketing and sales of Ornua’s consumer brands including Ireland’s most successful food export: Kerrygold. Consumer markets are served by production facilities in Ireland, Germany and the UK and by in-market Sales & Marketing Teams in Asia, Germany, Ireland, MEA, Poland, Spain, rest of Europe and North and Latin America.It also manages the procurement of Irish and non-Irish dairy products, the sale of dairy ingredients to food manufacturing and foodservice customers globally, and the implementation of de-risking and trading strategies to manage market volatility. These activities are supported by production facilities and in-market teams in Europe, North America, the Middle East and Africa.WHY THIS ROLE IS VALUABLE:We are hiring anOTSecuritySpecialistto work in our growinggroupIT Security team.The rolewillmonitorand manageourOT security software solutions, segmentation between IT & OTnetworks,documentOTsecurity processes and practices,monitorandrespond to potentialsecurityrisks,issuesandbreaches.ThisOTCybersecuritySpecialistwill play a key role inprotectingthe integrity, safety, and availability ofOrnua’sOT (OperationalTechnology) infrastructure food and dairy production environmentsfrom cyber threats and vulnerabilities. This role bridges the gap between industrial automation and cybersecurity, ensuring that digital systems—from milk pasteurization and cooling to high-speed packaging—remain resilient against threats that could lead to product contamination, spoilage, or large-scale recalls.Leveragingthe candidatesbackgroundfromanindustrialor OTenvironmentsandexpertiseincybersecurity,tocontribute to the development and implementation of robust securitycontrolmeasurestoaddressrisks and safeguardgroup’sindustrialoperations.We arelooking for individuals with a strong passionand understanding ofindustrial control systems, OT processes andsecurity knowledgearoundintrusion detection and responsecapabilities. As anOTSecuritySpecialist, you will be working with a globalsecurityteam toidentifyand remediate threats to thegroup’sindustrial operations.KEY AREAS OF RESPONSIBILITY:Provide on-going support inassistinggroup IT security team in the execution,managingand monitoring of global OT cybersecurity program activitiesacrossgroup industrial sites.Manage up-to date documentation of existing OT security controls, solutions, networkarchitectureand processes to ensure compliance with global IT & OT security policiesand applicable regulatory standards.Monitorand managegroup security approvedspecialisedOT Securitypassive discovery solution providingidentification of assets, traffic flows,vulnerabilitiesand threat/anomaly detection.Conduct securityriskanalyseson segmentation of traffic flows between IT and OT network segments andvulnerabilitiesidentifiedin theOT systemsand components (e.g.SCADA, PLCs,HMIs,workstations,handheld and other special purpose devices).Monitor and managethe use ofidentity and access managementand endpoint related security controls including hardening and USB controls/inspection.Ensuring all types ofstaff or vendorremote access into the OT networks isidentified,documentedanddeployed usinggroup approved secure OT remote access solution.Coordinate with OEM vendors to apply security updates during scheduled sanitation windows.Facilitate and foster cross collaboration between group IT security and local plant operations teams on new implementations to ensure a resilient OT infrastructure.Bridge the gap between IT security requirements and OT engineering realities, fostering a culture of shared responsibility.Monitor OT environments for security incidents,analysesecurity logs, and investigate alerts to detect and respond to cyber threatsin a timely manner.ProvideOTcybersecurity awareness training and support to Operations and engineeringpersonnel to promote a culture of security awareness and compliance.Supporting execution of routine internal and external OT security assessments projects.Stay updated on the latestdevelopmentsin industry 4.0 concepts,cybersecurity threats, trends, and technologies, and apply this knowledge to improve OT security posture.KEY REQUIREMENTS:Bachelor’s degree inindustrial automation/instrumentation,computer science, Information Security, or a related fieldis preferred but not mandatory.5-6years of experienceworking in an OT or industrial environments (preferrable in Food &Diarymanufacturing) with a focus oncybersecurityis preferred.Understanding ofspecialised OT Security solutions for OT asset discovery, vulnerabilityidentificationand anomaly / threat detection.Understanding of OT/industrial processes, protocols (Modbus,OPC UA,OSI Pi,SL7, MQTTetc.)andsystems(e.g.SCADA/DCS, PLCs,HMIs, etc.) typically used infood&diary manufacturing.Familiar with Safety and Hazard analysis on OT processes.Familiarity with cybersecurity standards and regulations, such asNIS2,ISA/IEC 62443,ISO27001andNIST OT Security guidelines.Understandingin network security concepts, tools, and technologies, including firewalls,encryption,IDS/IPS, and VPNs.Strong analytical and problem-solving skills, with the ability to analyse complex security incidents and recommend effective countermeasures.Knowledge of Microsoft Security suite (MS O365 Defender, Azure ATP, O365ATPand CAS etc..) would be an advantage.Excellent communication and collaboration skills, with the ability to interact with technical and non-technical stakeholders effectively.Industry certification like GICSP, ISA/IEC 62443 cybersecurity expert, Certified SCADA Security Architect (CSSA), or CISSP are a plus.Accessibility at OrnuaOrnua is committed to creating an inclusive and accessible workplace. We will make every effort to provide for any reasonable accessibility needs you may have during your employment with us. If you require accommodations at any stage of the recruitment process or in your role, please let us know — we’re here to support you.
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