PLC Programmer / Automation Engineer (CODESYS Expert)

We are looking for a highly technical PLC Programmer / Automation Engineer with strong expertise in CODESYS-based development environments. The candidate must be experienced in IEC 61131-3 programming, real-time control systems, and industrial communication protocols, with the ability to design scalable and modular automation architectures. Key Responsibilities * Develop, test, and maintain PLC applications using CODESYS V3.x platform * Design software architecture using FB, FBD, ST, LD, and SFC * Create reusable and modular CODESYS libraries and custom function blocks * Implement OOP concepts (interfaces, inheritance, encapsulation) * Configure task scheduling and real-time execution * Perform I/O mapping and device configuration * Debug using monitoring, breakpoints, and trace tools * Manage version control and libraries * Integrate systems via APIs and industrial protocols * Support commissioning and troubleshooting **Requirements** CODESYS (Mandatory): * CODESYS V3.x * Function Blocks, Functions, Programs * Library creation and management * GVL and persistent variables * Pointers and memory handling * State machine design * CODESYS Visualization * SoftPLC environments Industrial Communication Protocols: * Modbus RTU * Modbus TCP/IP * CAN Bus / CANopen * OPC UA * MQTT Systems & Integration: * Linux-based systems * REST APIs (HTTP/HTTPS, JSON/XML) * TCP/IP, sockets, serial communication * IoT and edge devices Preferred Qualifications * Industrial cybersecurity knowledge * Docker (bonus) * Real-time control and PID tuning * Marine or yacht automation experience Soft Skills * Strong debugging skills * Clean and modular coding practices * Good documentation * Team collaboration **Benefits** What We Offer: * Competitive salary and benefits package * Opportunity to work on innovative and sustainable projects * Supportive and growth-oriented work environment * Exposure to international standards and advanced technologies