KO
Kotlin IT skill profile
Also known as Kotlin Programming · Kotlin/JVM · Kotlin Multiplatform
What recruiters should know
Kotlin job postings grew 25%+ YoY between 2024 and 2025. Over 70% of Android job postings now require Kotlin; 90% of Android developers use it as their primary language. Kotlin Multiplatform (KMP) usage tripled from 7% to 18% of developers between 2024 and 2025. KMP has moved from experimental to production-ready — H&M, Netflix, and Cash App are expanding their KMP usage. Choosing Java for new Android apps in 2026 is taking on technical debt from day one. US Kotlin developer salary: $127K-$142K average.
In plain terms
Modern, concise programming language for JVM, Android, and multiplatform development
Industry demand
Overall level
high
Trend
growing
Top hiring sectors
- Consumer Mobile Apps
- E-commerce
- FinTech (Android)
- Gaming
- Enterprise Mobile
Proficiency ladder
What each level looks like in the work — behavioural markers, not job titles.
At this level, a developer can…
- Basic syntax
- Null safety
- Android basics
- Coroutines intro