Looking for an experienced c# developer to develop a windows application to import csv files into SQL server database. Each files types goes to a separate table. The developed console application to run as a service to import new files from a source folder and archive them to an archived folder after importing. This could also be implemented as a windows service which looks for new files in the folder and imports them into database. Sample_number is the unique identifier in each of the files so will be the primary key. If unique sample_number already exists in the table, update the rows otherwise insert. Error handling to log and notify of any import failures due to data or file format.