Hadi Tok
Software Engineer At WhatsApp (UI Foundations)
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolHadi Tok is a senior software engineer with 11 years of experience, currently shaping UI Foundations at WhatsApp where his components and rendering infrastructure serve over two billion users. He led the technical scoping and delivery of Chat Themes on Android, a feature that measurably boosted stability and engagement and earned press coverage from Android Police and Android Central. His work spans deep UI engineering—building highly efficient, design-system-aligned components—and platform reliability, including large-screen optimizations for tablets, foldables, and Chromebooks. Previously he led engineering and DevOps at CitizenMe, designing on-device data aggregation, secure exchange systems, and auto-scaling AWS infrastructure. A former Google Developer Expert for Android and regular international speaker, he combines product-focused technical leadership with hands-on implementation and measurable metrics pipelines. Outside core work he writes about Android development (20k+ reads on Medium), reflecting a continual commitment to developer education and practical tooling.
10 years of coding experience
10 years of employment as a software developer
Bachalors of Science, Computer Science, Bachalors of Science, Computer Science at University of South AlabamaHigh school, Sciences, High school, Sciences at Sivas Scientific HighschoolBachelor's degree, Business Administration and Management, General, Bachelor's degree, Business Administration and Management, General at Anadolu UniversityAssociates, Economics, Associates, Economics at Cankaya University
English, Turkish
Stackoverflow
771reputation
512kreached
19answers
6questions
Github Skills (55)
kakao10
bottomnavigationview10
matcher10
image10
android-library10
testing9
kotlin9
verification9
tdd9
android-app9
cpp8
mocking8
android8
service-worker8
redux8
Programming languages (7)
Github contributions (5)
gdgistanbul/MeetupAttendee
Jul 2019 - Mar 2020
An Android app to mark registrants as attendees or no-shows
Contributions:31 commits, 12 PRs, 34 pushes in 8 months
android-architecture-componentsattendeesandroidandroid-appkotlin
oshamahue/MeetupAttendee
Jan 2020 - Jan 2020
An Android app to mark registrants as attendees or no-shows
Contributions:4 PRs, 5 pushes in 6 days
attendeesandroidandroid-appkotlinmark
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