From Halopedia, the Halo wiki
Luke Timmins (also known as Abe Fromen SK) is an American video game engineer. Born in Ellicott City, Maryland, USA in 1981, Timmins was hired by Bungie Studios in 2001 and served as SDET and was credited as a video game tester for Halo: Combat Evolved. Later, he was credited as an engineer for both Halo 2 and Halo 3. During Halo 3: ODST's development, he contributed as an engineer. He is credited as the Multiplayer/UI Engineering Lead in Halo: Reach.