Luxeapp - update

I need a talented and quick-working programmer to update my existing app which is built for the Windows platform. The specific programming language used is unknown, thus expertise in multiple languages would be beneficial. Time is of the essence as it is crucial to have this update completed as soon as possible.

Ideal skills and experience:
- Proficiency in multiple programming languages including C#, Java, and Python
- Experience in updating and maintaining Windows apps
- Ability to deliver high-quality work under tight deadlines.