Dan Rusu, a backend engineer and creator of the Immutable Arrays library for Kotlin, discusses his quest for performance improvements in Kotlin/Android apps. He shares how his library achieves significant speed boosts and lower memory usage, thanks to concepts of immutability and effective benchmarking. The conversation explores the impact of primitive versus reference types, the challenges of adopting immutable arrays, and the advantages of using Kotlin in backend development. Dive into the exciting world of enhanced programming efficiency!