I would suggest you do this one: MCSD (Solutions Developer). Take a look:
Developer certification path[
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The globally recognized standard for developer excellence
Demonstrate your expertise at designing and developing fast and fluid Windows 8 apps. There are two paths to achieving this certification—using HTML5 or C#. (New to IT? Learn about MTA certification for new entrants.)
If you’re leveraging your existing web programming skills in JavaScript, or starting from scratch on a new website, we recommend choosing the HTML5 path. If you‘re a .NET developer and are planning to create Windows 8 apps, choose the C# path.
Earning an MCSD: Windows Store Apps certification will qualify you for such jobs as software developer, web developer, and quality engineer.