Fix Hacked Wordpress site and block the backdoor

This project is to fix my Wordpress site which was hacked with malicious scripts. I already took a backup of the website before and after the hack. I need this project to be completed as soon as possible. The project needs to include blocking the backdoor the hacker used so that it does not happen again. Additionally, I would like the freelancer to advise me on how I can secure and prevent this from happening again in the future. I'm hoping to find a skilled and reliable freelancer who can complete this job ASAP. Thanks for your help!