Operational Technology Analyst

Sentior, Ltd.; Limerick; Hybrid; EUR 8,266,000 - 11,710,000; Full time

Job summary

Johnson & Johnson Vision is seeking an Operational Technology (OT) Analyst in Limerick, Ireland. Hybrid work arrangement (3 days onsite, 2 remote) for a 12-month contract.

You will support and maintain OT infrastructure across regulated manufacturing environments, ensuring availability, performance, and reliability of critical systems. The role requires strong networking, virtualization, Windows/Linux administration, Active Directory, and cybersecurity skills, with collaboration across

Qualifications

• Experience in OT/IT infrastructure support within regulated manufacturing environments.
• Hands-on experience with Cisco networking technologies and virtualization platforms.
• Strong understanding of GxP compliance, data integrity, change control, and audit readiness.
• Proven ability to lead infrastructure projects and manage cross-functional stakeholders.

Responsibilities

• Support and maintain OT infrastructure across manufacturing environments.
• Ensure availability and performance of critical manufacturing systems.
• Provide technical support for OT servers, workstations, and network infrastructure.
• Participate in incident response, RCA, and problem management activities.
• Administer Windows and Linux OT platforms, patching, hardening, and backups.
• Lead OT infrastructure projects from initiation to implementation.

Skills

OT networking

Cybersecurity

GxP compliance

Project leadership

Incident response

Stakeholder management

Education

Bachelor's degree in IT/CS/Engineering/Cybersecurity or related

Tools

Cisco IOS

VMware vSphere/ESXi

Microsoft Hyper-V

Windows Server

Red Hat Linux

Ubuntu Linux

Active Directory

PowerShell

Bash/Shell scripting

DNS/DHCP

Job description

Operational Technology (OT) AnalystLocation: Limerick, Ireland (Hybrid working - 3 days a week onsite, 2 remote)Duration: 12 months contractHours: 40Imagine your next project driving the support, administration, maintenance, and continuous improvement of critical OT infrastructure within a regulated manufacturing environment, where your technical expertise directly impacts production reliability, cybersecurity, and GxP compliance.The Operational Technology (OT) Analyst is responsible for the support, administration, maintenance, and continuous improvement of OT infrastructure within a regulated manufacturing environment. This role requires strong technical expertise across networking, virtualisation, Microsoft and Linux platforms, Active Directory services, and project execution. The successful candidate will support manufacturing systems while ensuring compliance with GxP requirements, cybersecurity standards, and business continuity objectives.This position acts as a key liaison between Engineering, Manufacturing, Quality, and external vendors to deliver reliable and secure OT solutions that support business operations.roles and responsibilities- Support and maintain OT infrastructure across manufacturing environments.- Ensure availability, performance, and reliability of critical manufacturing systems.- Provide technical support for OT systems, servers, workstations, and network infrastructure.- Participate in incident response, troubleshooting, root cause analysis, and problem management activities.- Support disaster recovery and business continuity initiatives.- Administer and support Cisco networking equipment including switches, routers, wireless infrastructure, firewalls, VLANs, and network segmentation.- Troubleshoot network performance and connectivity issues.- Implement and maintain OT cybersecurity controls and secure network architectures.- Deploy, manage, and support virtualized environments using VMware vSphere and Microsoft Hyper-V.- Perform VM provisioning, migration, backup, capacity management, and lifecycle maintenance.- Support high availability and disaster recovery solutions.- Administer Windows Server environments.- Maintain Linux-based systems used for OT applications and supporting infrastructure.- Perform system patching, hardening, upgrades, and performance tuning.- Monitor system health and resolve infrastructure-related issues.- Manage Active Directory environments including user and group administration, Group Policy management, DNS and DHCP services, and authentication and access control.- Support integration of OT assets with centralised identity management solutions.- Implement least-privilege and security best practices.- Provide support for manufacturing computer systems and OT platforms.- Work closely with Engineering, Production, Validation, and Quality teams.- Support system upgrades, deployments, and validation activities.- Assist with lifecycle management of OT hardware and software.- Lead or participate in OT infrastructure projects from initiation through implementation.- Develop project plans, schedules, risk assessments, and technical documentation.- Coordinate with internal stakeholders and external vendors.- Manage project deliverables, timelines, budgets, and change controls.- Ensure systems are maintained in accordance with GxP requirements, data integrity principles, change management processes, and cybersecurity policies.- Support risk assessments and qualification and validation initiatives.- Maintain accurate technical and compliance documentation.- Demonstrate strong troubleshooting and analytical skills.- Utilise excellent verbal and written communication skills.- Demonstrate stakeholder management and project leadership capabilities.- Perform risk assessment and mitigation.- Execute technical writing and documentation.- Maintain a continuous improvement mindset.- Work independently and within cross-functional teams.how to succeed- Bachelor's Degree in Information Technology, Computer Science, Engineering, Cybersecurity, or related discipline, or equivalent combination of education and relevant industry experience.- 5+ years experience supporting OT, IT infrastructure, or manufacturing systems.- Experience in regulated manufacturing environments such as Pharmaceutical, Biotechnology, Medical Devices, or Life Sciences.- Hands-on experience with Cisco network technologies.- Strong experience administering VMware and/or Hyper-V environments.- Experience managing Windows and Linux operating systems.- Experience supporting Microsoft Active Directory infrastructures.- Proven track record delivering infrastructure or OT projects.- Experience supporting validated GxP systems.- Technical skills in Networking: Cisco IOS, VLAN configuration, routing and switching, TCP/IP, DNS, DHCP, network troubleshooting, and industrial network segmentation.- Technical skills in Virtualization: VMware vSphere, ESXi, vCenter, Microsoft Hyper-V, virtual networking, and disaster recovery.- Technical skills in Operating Systems: Windows Server, Windows 10/11, Red Hat Linux, and Ubuntu Linux.- Technical skills in Identity & Security: Active Directory, Group Policy, LDAP, Kerberos, and role-based access control.- Technical skills in OT & Manufacturing: GxP compliance, Computer System Validation (CSV), Data Integrity, Change Control, Risk Assessments, CAPA Support, and Audit Readiness.- Technical skills in Tools & Technologies: PowerShell, Bash/Shell scripting, Backup and Recovery Technologies, Monitoring and Alerting Platforms, and Endpoint Security Solutions.- Preferred qualification: Cisco CCNA or CCNP.- Preferred qualification: Microsoft Certifications.- Preferred qualification: VMware Certified Professional (VCP).- Preferred qualification: ITIL Foundation.- Ability to achieve high availability and reliability targets for OT systems.- Ability to minimize manufacturing downtime due to infrastructure issues.- Ability to deliver projects on time and within scope.- Ability to successfully support regulatory and quality audits.- Ability to keep infrastructure secure, compliant, and supportable throughout its lifecycle.- Ability to maintain strong partnerships across Engineering, Manufacturing, and Quality functions.benefitsThis role offers a very competitive hourly rate. This contract will run for 12 months you are welcome hereJohnson & Johnson is working to create an inclusive environment where diverse backgrounds, perspectives, and experiences are valued and each and every one of our people feels that they belong and can reach their potential. No matter who they are.about Johnson & Johnson VisionJohnson & Johnson Vision brings together cutting-edge insights, science, technology and people. We partner with eye care professionals and help more people around the world preserve and restore sight. Our portfolio includes the best selling contact lens brand in the world, ACUVUE, plus consumer eye health solutions, dry eye treatments, refractive (Lasik) and cataract products. Contribute to the next healthcare breakthrough, create a world connected by SIGHTTM with your next project at Johnson & Johnson Vision.https://jnjvisionpro.co.uk/application processWe are looking to process the first round of applications within the next 2 working days. We do not accept applications via email or LinkedIn InMail - you must apply direct to this advert.