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Khairul Alam

Khairul Alam

Senior Software Engineer (Android)
11+ Years Building Scalable Mobile Applications
Tokyo, Japan  ·  Currently at Rakuten
I'm passionate about building thoughtful digital experiences where great design, solid engineering, and real-world impact come together. I believe the best products are not only functional and reliable, but also intuitive, purposeful, and carefully crafted.
With 11+ years across Japan, Vietnam, and Bangladesh, I specialise in scalable Android applications, SDKs, and platform capabilities — spanning Kotlin, Jetpack Compose, Clean Architecture, and large-scale mobile ecosystems. I enjoy turning complex challenges into simple, maintainable solutions, and I'm continuously exploring how AI-assisted development can enhance engineering workflows.
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Years Experience
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Companies
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Technical Blogs
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Blog Views
Vietnam
Sun Asterisk Vietnam Co., Ltd.
Bangladesh
Lantas Technologies, Inc.

Work Experience

Senior Software Engineer (Android)
Rakuten, Inc.
Tokyo, Japan
Feb 2020 – Present
Software Engineer (Android)
Mercari, Inc.
Tokyo, Japan
Feb 2018 – Jan 2020
Software Engineer (Android)
Sun Asterisk Vietnam Co., Ltd.
Hanoi, Vietnam
Aug 2015 – Jan 2018
Software Engineer (Android)
Lantas Technologies, Inc.
Dhaka, Bangladesh
Nov 2014 – Jul 2015

Technical Skills

Programming & Architecture

Kotlin Java MVVM MVP Redux ⬡Clean Architecture ⬡Clean Code ⬡SOLID Modularization Design Language System MiniApps React JavaScript

Android & Development Tools

Android SDK Jetpack Compose ViewModel LiveData Room Navigation KTX Widget Coroutines Flow RxJava Dagger Hilt Kodein ⬡Retrofit ⬡OkHttp ⬡Moshi gRPC Glide Coil ⬡Braze Salesforce In-App Purchase Firebase Crashlytics Firebase Analytics Firebase Remote Config Firebase Performance Firebase App Distribution Firebase A/B Testing

Testing Tools

JUnit Robolectric Mockito Kluent Appium Codecov LeakCanary Timber Stetho Postman ⬡Charles Proxy

CI/CD & Deployment

CircleCI GitHub Actions DeployGate AppCenter Google Play Console

Collaboration & Productivity

Jira Figma Zapier Git GitHub Slack

AI & Developer Productivity

✦Claude Code ✦Codex ✦AI-Assisted Development ✦AI Debugging & Log Analysis ✦Token-Efficient LLM Workflows

Technical Writing

01
Simple way to create a custom Analog clock in Android
Android
9.9K viewsNov 2017
02
The common ways to pass data in Android applications
Android
7.1K viewsApr 2017
03
Android demo: Creating QR code using Kotlin
KotlinAndroid
6.0K viewsSep 2017
04
Creating a Custom Dialpad Soft Keyboard in Android
AndroidIME
3.3K viewsOct 2017
05
How to Write a Sync Adapter
Android
2.8K viewsNov 2016
06
Use BUCK in Android projects to speed up build time
AndroidBuild System
2.2K viewsMay 2017
07
How to Write an Android Authenticator
Android
1.9K viewsAug 2016
08
Build Uber-like tracking system using HyperTrack
AndroidReact Native
1.7K viewsAug 2017
09
Access GitHub RESTful API via Retrofit from Android
AndroidRetrofit
1.5K viewsDec 2015
10
Difference among Picasso, UIL, Glide & Fresco
Android
1.5K viewsMar 2017
11
Android Bottom Sheet
Android
1.5K viewsFeb 2017
12
Tower of Hanoi
AlgorithmPuzzle
1.4K viewsOct 2016
View all 23 posts on Viblo  →

Leadership & Collaboration

🎯

Drive alignment and transparency through Agile ceremonies, proactive risk mitigation, and clear prioritisation across stakeholders.

📚

Lead technical workshops sharing Android best practices, new technologies, and engineering patterns across teams.

🤝

Mentor engineers through code reviews and onboarding, contributing to faster ramp-up and a stronger engineering culture.

💡

Navigate ambiguity with open discussion and a solution-first approach to technical and organisational challenges.

Education

RU
Bachelor of Science — Computer Science & Engineering
University of Rajshahi, Bangladesh
2010 – 2014

Loves To

✍️ Writing / Coding
🥾 Hiking
🎱 Billiards
🏏 Cricket
💻 Hackathons