Destiny’s senior gameplay designer Josh Hamrick announced on Twitter overnight he would be leaving the company in a week’s time for Bethesda.

Hamrick joined Bungie in 2009 after working two years at Midway Austin, where he created multiplayer maps, modified single-player levels, and other designer functions. He was in charge of fixing bug in code to get BlackSite: Area 51 out the door.

Next Friday, after nearly 6 amazing years and w/ REACH & Destiny on the shelf, I say goodbye to my @Bungie family… A new adventure awaits! — Josh Hamrick (@Josh_Hamrick) March 28, 2015

To both my @Bungie family & our fans (looking at you 7th Column), from the bottom of my heart, THANK YOU! It’s been an honor and a pleasure. — Josh Hamrick (@Josh_Hamrick) March 28, 2015

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I’ll miss @Bungie more than words can tell, but I’m excited about both new challenges and being much closer to our hometown and our family. — Josh Hamrick (@Josh_Hamrick) March 28, 2015

Love you @Bungie! Thanks for millions of great memories. Keep kicking ass! Always & forever your biggest fan. <3 josh pic.twitter.com/HlW9DszpfO — Josh Hamrick (@Josh_Hamrick) March 28, 2015

Bethesda! It’s Bethesda! I’m going to @BethesdaStudios and I’m super stoked about it!! :-). I hope you’ll continue to follow along with me! — Josh Hamrick (@Josh_Hamrick) March 28, 2015

Over his career, Hamrick has worked in multiplayer design, UI design, and systems design.

Hamrick didn’t divulge what he would be working on at Bethesda, but the company has various games in development at various studios such as the next Doom, Fallout 4, and possibly Dishonored 2.