Hello,
I have more than a year of experience as a CS-Cart developer and have worked for an Australian ecommerce company, mainly working as a backend engineer using PHP but can also do front-end works using JQuery and LESS/SCSS. My works included implementing new features by adding addons on the cart, adding normalized tables, and extending core functionalities of the framework.
I have worked with the import/export functionality of the CS-Cart and I can create an addon to update the order status based on the information from the CSV. This will take no more than a week to make.
Thanks and best regards,
Joshua