I am equipped with the necessary skills for your task. I will secure the server, make sure there are no backdoors, check and fix your code and test it against numerous techniques like xss , csrf, xxe, sql-injection, remote code execution, ,file upload,bruteforce etc. a. Apart from that if you need I can also provide you with codes to monitor your traffic like logging IP addresses, user-agents, time etc. Message me so we can discuss more