urgent - exp kotlin developer to add a function in working code.

I need an experienced Kotlin developer to quickly add a function to some existing working code. The successful freelancer will be able to demonstrate their experience and expertise in Kotlin, and will ideally have a background in adding functions to existing code bases.

Please include in your application:
- Examples of past work specifically in Kotlin
- Detailed description of your experience with Kotlin
- A proposal for how you would approach this project

I need this project completed as soon as possible.