This is not a pure software role, and it is not a pure field technician role. It requires the rarest combination: someone who can read a PLC tag database export, debate the tradeoffs between KEPServerEX and a Snap7-based Linux gateway as an OPC UA bridge, and still sit across a table from a European OEM mechanical contractor and discuss motor torque limit parameters. You will own the Hardware Abstraction Layer (HAL), the translation layer between the Siemens controller and the web backend and you will be the single point of technical authority for everything between the field devices and the API endpoint. The role involves three on-site visits to Doha over approximately 22 weeks (audit, integration sprint, commissioning), with the majority of the work conducted remotely. Key Responsibilities Conduct an on-site technical audit of the existing Siemens S7-300 control system: document the full PLC tag database, DB block structure, Profibus DP device map, drive parameter registers, and ala...