Job Description: We are seeking an experienced Panel Wirer to join our engineering team at Heathrow Airport, working within a cargo handling environment. This is a long-term opportunity focused on upgrading legacy Siemens Simatic S5 PLC systems to the newer S7 platform. Key Responsibilities: * Panel wiring and assembly for control panels used in automated cargo systems. * Support the removal and replacement of legacy Siemens S5 PLCs with S7 PLCs, including wiring modifications and panel reconfiguration. * Interpret and work from electrical schematics, wiring diagrams, and layout drawings. * Install, terminate, and test field wiring, I/O modules, sensors, and actuators. * Collaborate closely with control engineers and project teams to ensure system functionality and minimal downtime. * Conduct site surveys, cable routing, and installation in operational airport environments. * Follow all Heathrow Airport safety regulations and permit-to-work procedures. * Participate in system commissioning and troubleshooting of PLC-controlled systems. Requirements: * Proven experience as a panel wirer or electrical technician in an industrial or automation environment. * Familiarity with Siemens PLCs, especially Simatic S5 and S7 platforms. * Ability to read and interpret electrical schematics and panel layouts. * Experience working in airports, logistics, or cargo handling environments is benefic...