Shmuel
Summary
👤
SeniorShmuel Rosansky is a Lead Principal Software Engineer based in the New York City metro area with 11 years of experience and deep expertise in Android and Kotlin. He’s a hands-on technical leader who has driven large-scale platform work at Google—leading the Material You widget overhaul shipped to 100+ million users, founding cross-functional working groups, and fixing a P0 Android 13 widget bug—while also growing and mentoring engineering teams. An advocate for Kotlin inside large orgs, he helped adopt coroutines across thousands of build targets, taught the Kotlin at Google course, and runs a code-review program that shapes standards for hundreds of reviewers. Comfortable at the intersection of product, platform, and people, Shmuel combines strong execution on shipping UI and system improvements with a proven track record of improving developer velocity and retention.
11 years of coding experience
Stackoverflow
3,916reputation
458kreached
125answers
33questions
android
top-5%
firebase-realtime-database
top-5%
Github Skills (33)
kotlin10
slide10
java10
android-app10
android10
kotlin-android10
async9
leakcanary9
webservice9
firebase-realtime-database9
client-library9
google-maps-api9
memory-leak-detection9
coroutines9
material-design8
Programming languages (4)
Github contributions (5)
shmuelr/shmuelr.github.io
Jul 2015 - Apr 2025
Contributions:25 pushes, 1 branch in 9 years 10 months
shmuelr/touro-mco152
Jan 2015 - May 2015
Contributions:58 commits, 4 PRs, 63 pushes in 3 months
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