So I was assigned to improve an existing internal CMS application where they wanted the ability to add extra form applications and restricting them based on people from different departments. As well as include some other improvements like speed as they mentioned that it was slow in some instances.

What I found was the original developer decided to not use any kind of framework and decided to be creative by creating his own MVC framework. With about 300 users in this system and utilising no caching of queries, views, not even using PHP OpCache, even quite a few security holes, I was damn surprised at how this thing was running. I asked the original developer why he didn't use an open source framework and he said that he thought that he'd create something and be the next Facebook.

It was a mammoth task to "improve" this system but the main thing was that I took custody of this project and that I prevented him from trying to make a bigger mess of things for this project.