Simulation engineers develop high-fidelity models of mechanical, thermal, structural, and fluid systems using computational methods and advanced simulation platforms. They apply finite element analysis, computational fluid dynamics, multi-body dynamics, and digital twin technologies to evaluate system performance, predict failures, and optimise designs. Their work supports aerospace, automotive, energy, robotics, and manufacturing industries. They collaborate with design engineers, data analysts, and research teams to validate simulations and refine models. With global adoption of digital twins, autonomous systems, and predictive engineering, simulation engineering remains a rapidly expanding field.