Windows Game Launcher Development

I'm looking for a skilled developer to create a game launcher for Windows. This launcher should come with functionalities like automatic updates for the games and integrated social features, including chat and a friends list.

Ideal Skills:
- Windows Software Development
- C# or C++ programming
- Experience with integrating social features in software
- Knowledge of automatic update systems for software
- UI/UX design skills for user-friendly interface

Requirements:
- The game launcher should allow users to log in via the 'start' button, rather than traditional methods like email, social media or SSO.

Please, include your relevant portfolio and any similar projects you've completed in your proposal.