Justin Lee is a Senior Software Engineer with 11+ years of experience specializing in high-impact Android applications and scalable architectures. He has led major modernization efforts—migrating large codebases to Kotlin, introducing Jetpack Compose, and modularizing apps—to improve performance and maintainability for millions of users. At Yahoo he drove the Yahoo Sports app to a 4.7 rating and doubled downloads through strategic feature work, performance tuning, and migrating background work to coroutines/Flow and WorkManager. His background spans mobile-first products at scale, from preloaded SVoice assistants on Samsung devices to BYOD enterprise solutions, paired with server-side RESTful services early in his career. Based in California, he combines deep hands-on engineering with pragmatic architecture choices and a track record of reviving legacy systems into modern, user-focused products. An unusual strength is his consistent focus on measurable user outcomes (ratings, downloads, crash rate and cold-start time) alongside technical modernization.
11 years of coding experience
13 years of employment as a software developer
BS Computer Science, BS Computer Science at California State University, Chico
MS Software Engineering, MS Software Engineering at Southern Methodist University
Contributions:42 pushes, 1 branch in 3 years 2 months
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