Senior Android Engineer Career

Model success, loading, empty, and failure states using Kotlin null safety and sealed types without unsafe assertions.

Use data classes, immutable collections, and copy operations while correctly reasoning about equality and object references.

Write focused extension functions and higher-order functions that improve an Android codebase without obscuring behavior.

Apply generic type constraints and declaration-site variance to design a type-safe Kotlin API.

Choose appropriate Kotlin collection types by comparing lookup, insertion, ordering, and memory trade-offs.

Solve an array or string interview problem using a hash-based lookup and state its time and space complexity.

Write parameterized unit tests for a Kotlin function, including boundary and failure cases.