As a commercial cleaner, you provide cleaning services to commercial buildings like department stores, offices, and medical facilities. For this job, your responsibilities include assessing the space, developing and implementing a cleaning plan, and ensuring the premises meets the cleaning standards of the client. Qualifications vary by employer, but generally, they include a high school diploma or GED certificate, attention to detail, and the ability to perform manual labor for an extended period. On-the-job training is often available from larger commercial cleaning companies.