Jason Major

Jason "Argo" Major is a member of Microsoft and a developer for Minecraft Pocket Edition.

Background
Jason Major is a member of Microsoft, and became a developer for MCPE after Mojang was acquired by Microsoft. In his Twitter Account, he mentioned he lives in Canada.

Trivia

 * Jason Major was responsible for coding in most features for Update 0.14.0, including the version exclusive jockey mobs.