Senior Resident Engineer

Job Title: Senior OT/ICS Resident EngineerLocation: Saudi Arabia Employment Type: Permanent About the RoleWe are seeking a highly capable Operational Technology (OT) / Industrial Control Systems (ICS) Resident Engineer to provide on-site technical expertise, system support, and cybersecurity oversight for critical industrial environments. This role requires a hands-on professional with a strong understanding of OT networks, control systems, and cybersecurity principles, capable of bridging the gap between IT and OT operations.Key ResponsibilitiesProvide daily operational support for OT and ICS environments, ensuring system availability, stability, and security.Manage, monitor, and maintain industrial networks, including switches, firewalls, and communication links between control systems.Support incident detection, response, and system recovery activities within the OT network.Assist in system patching, configuration management, and change control processes across multiple vendor environments.Participate in cybersecurity assessments and deployment of monitoring solutions aligned with frameworks such as IEC 62443, NIST, and ISO 27019.Conduct system performance reviews, vulnerability checks, and provide recommendations for improved operational resilience.Maintain technical documentation, configuration records, and OT asset inventories.Collaborate closely with IT security, engineering, and operations teams to ensure secure integration of technologies.Technical Skills & Experience5 years plus of experience supporting OT/ICS environments (e.g., energy, utilities, manufacturing, oil & gas, or critical infrastructure).In-depth understanding of IP networking concepts, including the OSI and Purdue models, VLANs, routing, and network segmentation.Strong familiarity with ICS protocols (Modbus, DNP3, OPC, Profibus, etc.) and control system architectures (SCADA, PLC, DCS).Scripting languages such as Python or Shell.Exposure to SIEM platforms and log management tools for monitoring OT environments.Knowledge of industrial vendors and technologies Solid grasp of OT cybersecurity practices, including network segmentation, asset visibility, and anomaly detection.Excellent analytical and troubleshooting abilities, with strong communication and stakeholder management skills.