Senior IT/OT Infrastructure & Systems Engineer

Westbourne; Killorglin; On-site; EUR 75,000 - 95,000; Full time

Job summary

Westbourne in Ireland seeks an experienced IT/OT Infrastructure & Systems Engineer to support IT/OT environments within a pharmaceutical manufacturing facility. The role requires hands-on technical expertise across IT infrastructure, networking, cybersecurity and computerised systems.

You will troubleshoot complex issues, maintain business-critical systems and collaborate with engineering, manufacturing, laboratory teams and external vendors to ensure compliant, reliable operations.

Qualifications

• 5+ years hands-on IT/OT infrastructure experience.
• Strong knowledge of Windows Server, Active Directory, VMware/Hyper-V.
• Experience with TCP/IP networking, switches, VLANs and firewalls.
• Experience supporting manufacturing, automation or lab environments.
• Strong troubleshooting and cross-functional collaboration.

Responsibilities

• Install, configure, and maintain IT/OT infrastructure within manufacturing environments.
• Support OT networks, VLANs, routing, firewalls and secure remote connectivity.
• Manage cybersecurity: endpoint protection, patching, system hardening and access controls.
• Support Windows Server, Active Directory, DNS, DHCP and backup/recovery solutions.
• Provide technical support for PLC, SCADA, DCS and HMI systems; maintain related applications.
• Troubleshoot equipment connectivity and data interfaces with internal teams and vendors.
• Investigate incidents, perform root cause analysis and support system upgrades.
• Ensure IT/OT systems comply with QMS, validation standards, and site procedures.
• Document SOPs, procedures, diagrams and inventories.

Skills

IT/OT engineering

Windows Server

VMware/Hyper-V

Networking

Cybersecurity

Troubleshooting

Collaboration

Education

Bachelor's degree in Computer Science/IT/Engineering

Tools

PLC/SCADA Systems

Job description

Role Overview

We are looking for an experienced, hands-on IT/OT Infrastructure & Systems Engineer to support IT and Operational Technology environments within a pharmaceutical manufacturing facility. The ideal candidate will have a strong technical background in IT infrastructure, networking, cybersecurity and computerised systems, with experience supporting manufacturing, automation and laboratory environments. This role requires a proactive and technically skilled engineer who can troubleshoot complex issues, maintain business-critical systems and work closely with engineering, manufacturing, laboratory, vendors and corporate IT teams.

Key Responsibilities

• IT/OT Infrastructure: Install, configure, maintain and troubleshoot servers, workstations, virtualisation platforms, operating systems, storage and associated infrastructure within manufacturing environments.
• Networking: Support and troubleshoot OT networks, switches, VLANs, routing, firewalls, network segmentation and secure remote connectivity.
• Cybersecurity: Manage endpoint protection, vulnerability management, patching, system hardening, access controls and security monitoring across IT/OT environments.
• Systems Administration: Support Windows Server, Active Directory, Group Policy, DNS, DHCP, Microsoft Entra ID, backup and recovery solutions.
• Manufacturing & Laboratory Systems: Provide technical support for automation platforms including PLC, SCADA, DCS and HMI, along with manufacturing applications, laboratory instruments, LIMS and chromatography systems.
• Systems Integration: Troubleshoot equipment connectivity, application interfaces and data transfer issues while working with internal teams and external vendors.
• Operational Support: Investigate technical incidents, perform root‑cause analysis, support system upgrades and manage lifecycle activities and service recovery.
• Compliance: Ensure IT/OT systems comply with Quality Management System (QMS) requirements, validation standards and site procedures.
• Documentation: Maintain SOPs, technical procedures, infrastructure diagrams, system inventories and configuration records.

Required Skills & Experience

• Minimum 5 years of hands‑on experience in IT infrastructure, IT/OT engineering, industrial IT or a similar technical role.
• Strong knowledge of Windows Server, Active Directory, VMware/Hyper‑V and enterprise IT infrastructure.
• Experience with TCP/IP, switching, routing, VLANs, firewalls and network troubleshooting.
• Good understanding of cybersecurity, endpoint protection, vulnerability management and IT/OT network security.
• Experience supporting manufacturing systems, automation platforms, laboratory environments or equipment‑connected infrastructure.
• Strong technical troubleshooting, problem‑solving and incident management skills.
• Ability to work independently and collaborate effectively with cross‑functional teams.

Desirable Experience

• Previous experience in pharmaceutical, biotechnology or regulated manufacturing environments.
• Familiarity with PLC, SCADA, DCS, MES and industrial communication protocols such as OPC UA, Modbus and PROFINET.
• Experience supporting laboratory systems such as Waters Empower, LIMS or analytical instruments.
• Understanding of IEC 62443, NIST, GAMP 5, CSV/CSA, 21 CFR Part 11 and EU GMP Annex 11.
• Relevant technical certifications such as Microsoft, Cisco, CompTIA Security+ or GICSP.

Qualifications

• Degree in Computer Science, Information Technology, Engineering, Automation or a related discipline.
• Equivalent relevant industry experience will also be considered.