To thrive as a Window Cleaner (WCR), you need manual dexterity, physical stamina, and attention to detail, with most positions requiring a high school diploma or equivalent. Familiarity with squeegees, extension poles, cleaning solutions, ladders, and sometimes harness systems for high-rise work is essential, and some companies may require safety certification such as OSHA training. Reliability, good communication, and respect for client property are important soft skills that help build trust and satisfaction. These abilities ensure safety, efficiency, and high-quality results in a role that often involves customer interaction and working at varying heights.