Check for errors in excel data files

I need Assistant who will mainly do checks and verification for errors/problems in filled excel file with data. You must be with good english skills,excellent communication skills, precise. You must be available 4-5 hours weekly(1h daily) ;available on skype and able to work/communicate in UTC/GMT+2 between 13:00 PM - 23:00 PM The job for now is part time weekly for now and is possible if I am happy with the process to make it permanent. Thanks! Hours of work: 5 hours / week Project Duration: 2 - 4 weeks