Plant engineers oversee mechanical, electrical, and process equipment in large industrial facilities such as oil refineries, fertilizer units, power plants, food-processing factories, and cement plants. They coordinate maintenance, troubleshoot breakdowns, execute shutdowns, monitor KPIs, and ensure adherence to safety and environmental compliance. They work with operations, reliability, instrumentation, and quality teams to maintain consistent throughput and minimise downtime. With rising industrial automation and global energy needs, plant engineering remains a critical and high-demand discipline.