Kotlin 2026: Layoffs, AI, Google — Is the Golden Age Over? Jake Wharton Explains
In a Nutshell
Kotlin succeeded by offering incremental migration from Java with complete tooling support, but its career advantage has evaporated as adoption became ubiquitous. Jake Wharton left Google to build products rather than tools, joined Skylight after rejecting 95% of opportunities that violated his values against AI, crypto, VC funding, and poor work-life balance. He argues AI will collapse under rising costs and training data degradation, while Kotlin's ecosystem and tooling advantages outweigh Swift's superior language design, though Kotlin should avoid single-platform targets where native languages excel.
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The LLM industry operates on a standard VC playbook: subsidize usage, addict users, then switch to value extraction. Coinbase CEO eliminated 14% of staff while citing AI. Cash App eliminated 70% of engineers after Jake Wharton's departure.
In 2010, Java was the number one programming language globally, and Android ran on Java. Kotlin emerged when the Java language had become stagnant under Oracle's stewardship. Release cycles occurred every two years, leaving the Google Android team limited by what Java provided. The community was exploring alternatives like Scala and Groovy when Kotlin arrived at a moment when developers sought more modern language features.
Kotlin succeeded because JetBrains was a tooling company that could deliver a complete language with IDE support and infrastructure. The language leveraged the existing Java ecosystem, allowing developers to gradually introduce it without discarding Java libraries or entire codebases. This incremental migration capability made adoption significantly easier than languages requiring complete ecosystem rebuilding.
Jake Wharton spent five to six years at Square, where Kotlin was adopted three years prior. He wrote a public document justifying Kotlin adoption that became a general argument for the language, generating significant Android community interest. When Google recognized Kotlin's potential benefits, they approached Wharton about joining the Kotlin team, offering the opportunity to make Kotlin the first-party official Android language.
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