Lead LLC Development Engineer (PLC Development Lead - Baggage Handling Systems)

Role Purpose Wise Technical is seeking an experienced Lead LLC Development Engineer to lead the design, architecture and delivery of PLC-based control software for automated baggage handling systems (BHS). This is a senior, hands-on technical leadership role responsible for setting the standards, structure and quality of our low-level controls development, while directly architecting and writing PLC code for large-scale, safety- and performance-critical airport baggage systems. The successful candidate will own the technical delivery of PLC applications from first principles through to commissioning, ensuring robust integration with HMI/SCADA platforms, Sort Allocation Computer (SAC) systems, and hold baggage screening infrastructure. They will provide technical leadership to the wider LLC development team, working closely with the LLC Product Manager on day-to-day technical direction and reporting into the LLC Solutions Senior Manager for line management matters. Key Responsibilities Technical Leadership & Architecture Lead the architecture and design of large-scale PLC control applications for baggage handling systems, built from the ground up. Define coding standards, structure and best practice for the LLC development team, and ensure their consistent application across projects. Provide technical direction and mentorship to PLC engineers, reviewing code and designs for quality, maintainability and performance. Act as the senior technical point of contact for PLC development matters, working closely with the LLC Product Manager to align development with product and project priorities. PLC Development & Systems Integration Design and develop PLC software for conveyor control, bag tracking, sortation and system sequencing across large, multi-PLC BHS installations. Develop and integrate control logic for hold baggage screening (HBS), ensuring compliance with relevant screening standards and airport operational requirements. Develop and maintain interfaces to Sort Allocation Computer (SAC) systems, Host Level Controller (HLC) systems, and airport IT/BRS platforms. Architect and implement bag tracking logic, ensuring accurate, reliable and auditable bag status and routing data throughout the system. Integrate PLC applications with HMI and SCADA systems, ensuring reliable real-time visualisation, alarming and operator control. Design and implement robust fault handling, diagnostics and system recovery strategies. Project & Delivery Management Produce and maintain functional design specifications, software design documents and test documentation for PLC applications. Plan and lead FAT (Factory Acceptance Testing) and SAT (Site Acceptance Testing) activities for control software. Support on-site commissioning, working with site teams to install, test, and go-live PLC applications. Identify technical risks early and work with the LLC Product Manager and Senior Manager to mitigate delivery risk. Team &…