Mod Liam is a lead content developer at Jagex. He is also a product owner, and is part of the Ninja team.
Mod Liam has been at Jagex since 2005, having originally joined the company as a senior content developer. He became a lead content developer in 2011, which requires him to, in his own words, "ensure that features and content meet the desired quality bar in terms of gameplay".
Sometime between 2005 and 2012, Mod Liam worked on Stellar Dawn, an unreleased MMO by Jagex.