Content Development Team is a team of Jagex employees who design and develop content updates. They oversee the development of everything that goes into RuneScape.
Content Developers are generally asked to develop a certain update with a particular goal (for example "a new, low-budget Herblore training method") and are more or less free to fill it in as they please and devise its mechanics, narrative, and gameplay, so long as it remains in accordance with the design. Content Developers code their own content and implement it accordingly.
Mod Drew is Content Development Manager, replacing Mod Dean, and being replaced himself as Lead Technical Developer by Mod Helen. He has developed the 2012 Winter event, Balthazar's Big Raffle and Twitch integration. Previously, he worked in QA and Player Support.
^Jagex. Mod Orion's Twitter account. 14 September 2018. (Archived from the original on 14 September 2018.) Mod Orion: "I joined @Jagex 3 years ago today. Starting humbly with god books and xmas '15, I've since worked on some incredible projects that will stick with me forever. I'm proud to work here and be surrounded by awesome people. See you at @RuneFest"