Photograph a middle-aged engineer, around 40 years old, wearing a white helmet and a dark gray jacket. The engineer should be standing upright with both hands resting on a metal bar of stairs, looking up towards the left side of the frame. The setting should be outdoors with sunlight, featuring a clean, industrial background with white metal surfaces. The image should convey a sense of professionalism and experience in an illuminated, well-maintained outdoor environment. clean white metal bar