Worked on the openrewrite/rewrite repository to deliver a major enhancement to the UpgradePluginVersion feature, focusing on improving reliability for complex Gradle plugin upgrade scenarios. The solution involved migrating to a trait-based matching approach using the GradlePlugin trait, which enabled more accurate detection of plugin IDs across both Kotlin and Groovy DSLs. Addressed the challenge of handling plugins declared with apply false by implementing full chain-walking of method invocations, ensuring correct version resolution. Expanded automated test coverage to validate upgrade paths in realistic build configurations, and improved test quality and stability. Utilized Java, Gradle, and software development best practices throughout.