ROBLOX Corporation is looking for Windows 8/XBOX software engineers.

[ToonU]

ROBLOX allows builders to create elaborate online environments that simulate the real world, then share and play them with the community. ROBLOX is ranked #1 among kids entertainment sites by comScore in the U.S. for daily visitors, total minutes, total page views, total visits, and average visits per visitor. ROBLOX generates over 1.4 billion page views and 70 million total engagement hours each month. Our mission is to become the global leader in user-generated gaming and creation for all ages. Check out our latest news at blog.roblox.com.

In this following career page:

Must Have:
-5+ years experience with client-side software development (C, C++, C#)
-3+ years development experience with the following:
-Xbox applications
-Windows 8.1 Phone & Tablet Store applications
-Experience with client-server networking and REST APIs
-Hands-on knowledge about HTML, JavaScript, JSON

You can see the full request here:
Careers

Here's the full ROBLOX career page, for extra proof. This was listed under Mobile.
http://corp.roblox.com/careers

If you meet the requirements, you should consider applying!

Sorry if this is in the wrong area - These forums are kind of tricky to navigate.