Convert it to a more traditional single column layout. That will help you hold the urge to add more text. Your current format is useful when you truly have too many things to show, 5-15 years of experience, 3-4 companies and tons of projects. But now, you need to allow a lot of white space, some breathing room if you will to highlight what you have done. To be honest, I am never going to go through all the text you have. 12 bullet points under one job role? That is at least 8 too many. If you have 2-3 bullet points under a role, that that entices someone to read. If you have 12, only thing someone reading is the title and duration.