Senior OT Infrastructure Engineer

The Senior OT Infrastructure Engineer is a key member of the AAMF Manufacturing Systems team, responsible for the design, reliability, cybersecurity, and lifecycle management of GMP‑critical OT infrastructure. This includes DCS/PLC/SCADA systems, data historians, servers, and networks that underpin drug product manufacturing. Working at the interface of IT and Automation, the role ensures systems remain highly available, secure and compliant, while enabling digitalisation, analytics and AI initiatives aligned with Industry 4.0 and site strategy.

Location: Monksland, Athlone | 37.5 per week (Mon‑Fri, 09:00–17:00, flexible)

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• Own reliability, availability and performance of GMP‑critical OT systems and networks
  
• Maintain OT systems in a validated, audit‑ready state (cGMP, GAMP, 21 CFR Part 11, data integrity)
  
• Plan and implement patching, upgrades, preventative maintenance and obsolescence strategies
  
• Lead OT cybersecurity controls including network segmentation, vulnerability management and incident response
  
• Govern change control, risk assessments, IQ/OQ/PQ support, and deviation investigations
  
• Manage backups, disaster recovery, redundancy and restore testing
  
• Drive OT upgrade projects from design through validation and cutover
  
• Manage third‑party vendors and system integrators
  
• Support AVEVA PI data ingestion, data quality and infrastructure readiness for analytics and AI solutions
  
• Collaborate with Automation, Manufacturing, QA, Global Security and IT
  
• Support training, standardisation and OT maturity across the manufacturing network
  

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• Proven experience in OT / industrial IT within GMP manufacturing environments
  
• Hands‑on experience with DCS/PLC/SCADA systems (DeltaV strongly preferred)
  
• Strong experience with AVEVA / OSIsoft PI and SQL Server in validated environments
  
• Expertise in OT infrastructure (VMware/Hyper‑V, Windows Server, backups, endpoint hardening)
  
• Industrial networking and protocols (VLANs, firewalls, OPC/OPC UA, Industrial Ethernet)
  
• OT cybersecurity implementation and vulnerability management
  
• Strong knowledge of cGMP, GAMP 5, change control and validation
  
• Proven ability to lead complex OT projects and manage vendors
  
• Excellent communication and technical leadership skills
  

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• Degree in Engineering, Computer Science or similar
  
• Experience with Siemens, Rockwell, BMS/HVAC, Kepware or AVEVA platforms
  
• Scripting (PowerShell) and cloud/analytics integration exposure
  
• OT/IT certifications (ISA/IEC 62443, GICSP, VMware, Microsoft)
  

We welcome and consider applications from all qualified candidates, regardless of characteristics. We offer reasonable adjustments/accommodations to help all candidates to perform at their best. xcfaprz If you have a need for any adjustments/accommodations, please complete the section in the application form.