I have extensive experience working with Excel files and converting them to CSV format while performing validation tasks. In my previous projects, I have successfully implemented similar functionalities using Java. I can leverage my expertise to develop a robust application that validates and converts your Excel files, handling various data types, including dates and special characters. With my strong programming and data analytics skills, I am confident in delivering a high-quality solution for your needs. I assure you efficient processing of files ranging from 1,000 to 10,000 rows. I am eager to contribute to your project and look forward to discussing the details further. Thank you!