To write a plugin for Counter Strike Global Offensive

Need to write a plugin on the server CS:GO (VAC protected) with the ability to play 1 on 1, which will accept the data from our script (ID Steam players, selected map, and password if necessary). At the end of the game, the plugin must send the total score for the match, the winner of the game, etc. our script.

The candidate must have experience with servers CS:GO (preferably to send a link on designed You service).