CodeIgniter Upgrade & Security Enhancement

I’m searching for a skilled web developer with demonstrable expertise in CodeIgniter and a solid understanding of database handling and security features. This project revolves around upgrading my current point of sale website from CodeIgniter 3.1.0 to 4.4.x, with a focus on a few vital areas:
The website is a point of sale + tools to manage a salon . Need to upgrade to newest version to run on php8.2.x