To thrive as an Overnight Janitor, you need basic cleaning and maintenance skills, attention to detail, and the ability to work independently, typically with a high school diploma or equivalent. Familiarity with cleaning equipment such as floor buffers, industrial vacuums, and proper use of cleaning chemicals is often required, with some employers valuing certifications in safety procedures (like OSHA). Reliability, time management, and a strong work ethic are valuable soft skills for excelling in this position. These skills are essential for ensuring a clean, safe environment during non-peak hours, enabling smooth operations for daytime staff and building users.