OT Support Specialist (Onsite, Baarle-Nassau, Dutch/Eng, Field Service)

Provide onsite support for OT systems, including PLC, SCADA, communication modules, and related control systems. The role focuses on troubleshooting, incident resolution, system recovery, patching, backups, and compliant change execution in line with site QMS requirements. Responsibilities

• Support onsite OT systems, including incident management, service requests, change requests, and problem management
• Troubleshoot PLC, SCADA, OPC/PI, and communication-related issues
• Analyze PLC CPU and communication module diagnostic buffers to identify root causes
• Resolve software, configuration, communication, firmware, and system-level issues
• Coordinate OEM/vendor support for PLC and SCADA repairs, escalations, and technical support
• Perform firmware, memory, and module health checks for CPUs, CP cards, and I/O modules
• Support software, firmware, OS patching, and update scheduling in Inpat
• Restore PLC and system communication through approved configuration changes, controlled restarts, or recovery actions
• Trace I/O and field signals using E&I drawings, loop diagrams, I/O lists, and system documentation
• Identify suspected field or electrical issues and escalate them to the appropriate teams
• Perform regular OT system backups and support disaster recovery, business continuity, and data restoration
• Maintain validated system baselines before and after corrective actions
• Execute and document change controls according to site QMS
• Maintain technical documentation, system records, backup evidence, and change documentation
• Collaborate with Engineering, Automation, IT, Quality, Production, and external vendors

• Experience supporting OT, automation, or industrial control systems in a manufacturing or regulated environment
• Good knowledge of PLC and SCADA systems, including diagnostics and troubleshooting
• Experience with industrial communication systems such as OPC, PI, Ethernet/IP, Profinet, Profibus, or similar
• Understanding of PLC CPUs, communication processors, I/O modules, firmware, memory utilization, and system diagnostics
• Experience with incident management, service requests, problem management, and change control processes
• Knowledge of OT patching, software updates, firmware upgrades, backups, and restore procedures
• Ability to read and interpret E&I drawings, loop diagrams, I/O lists, network diagrams, and technical documentation
• Understanding of GMP, GxP, QMS, or validated system environments is preferred
• Familiarity with OT cybersecurity, system hardening, access control, and vulnerability management is an advantage
• Experience coordinating with OEMs, vendors, and third-party support teams
• Strong documentation, communication, and troubleshooting skills
• Ability to work onsite and respond to production-critical system issues

• Broad range of activities, tasks, and projects
• Flexible working conditions
• Vouchers (B-day voucher, wedding, and new born surprise)
• Fishing for Friends program - our referral program
• Refreshments in the D-ploy office
• Further development and professional advancement
• Friendly and international working environment
• Company-sponsored events

Is IT in your DNA?

D-ploy is a leading IT and Engineering Solutions company with operations worldwide. Our mission is to deliver innovative and D-ploy is an IT and Engineering Solutions company with operations throughout the EMEA region including Switzerland, Germany, Czech Republic, Austria, UK, as well as the USA. We pride ourselves on delivering innovative and superior services and solutions to numerous industry-leading clients. By building relationships and trusted partnerships within the IT community, we optimize our customer’s IT productivity and contribute to the organization’s success and value.