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.

Email LinkedIn Blog GitHub

Years Experience

Companies

Technical Blogs

Blog Views

Japan

Rakuten, Inc. · Mercari, Inc.

Vietnam

Sun Asterisk Vietnam Co., Ltd.

Bangladesh

Lantas Technologies, Inc.

Work Experience

Feb 2020 – Present

Senior Software Engineer (Android)

Rakuten, Inc.

Tokyo, Japan

Feb 2018 – Jan 2020

Software Engineer (Android)

Mercari, Inc.

Tokyo, Japan

Aug 2015 – Jan 2018

Software Engineer (Android)

Sun Asterisk Vietnam Co., Ltd.

Hanoi, Vietnam

Nov 2014 – Jul 2015

Software Engineer (Android)

Lantas Technologies, Inc.

Dhaka, Bangladesh

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

Open Source

Mobile Design System MIT License

A small, opinionated, View-based design system for Android in Kotlin, with no Jetpack Compose dependency. Three tiers of tokens, one theme for many brands, light and dark from the same tokens, and accessibility as a default. Built to be read, copied and adapted. Contributions are welcome: fork the repo and open a pull request.

AndroidKotlinDesign systemDesign tokensAccessibility

GitHub ↗ Docs ↗ How to contribute ↗

Technical Writing

Series · 6 partsNEW

Building a design system for Android Views, with working code

How to design tokens, components, screen templates and documentation for an Android app without Jetpack Compose, with every claim backed by a running open-source example: github.com/liconrepo/MobileDesignSystem. Reading time only: cloning the repo and trying each part's exercises adds 15 to 30 minutes.

Design systemAndroidKotlinDesign tokensAccessibilityOpen source

Series · 8 partsNEW

Claude Code, from first install to a project that remembers

A two-level series. Beginner: getting started safely, giving Claude lasting memory with CLAUDE.md, spending fewer tokens, and finding the official docs, models and API. Advanced: day-to-day prompting and git, MCP, subagents and plugins, automation and teams, and a learning path. Reading time only: the exercises and the first-week plan add 20 to 40 minutes of hands-on practice a day.

Claude CodeCLAUDE.mdTokensMCPGitHub ActionsClaude API

Earlier

Building a private AI chat app for Android: local models, online models, and shipping to Google Play

How a chat app can run a language model on the phone, call an online model, fall back between them, and reach the Play Store: the theory, the architecture, a tiny model of your own, and the pitfalls.

AndroidOn-device AIllama.cppGoogle Play

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

Bachelor of Science — Computer Science & Engineering

University of Rajshahi, Bangladesh

2010 – 2014

Loves To

✍️ Writing / Coding

🥾 Hiking

🎱 Billiards

🏏 Cricket

💻 Hackathons

Get In Touch

Have a project, question, or just want to say hello? Send me a message and it will open in your email app, addressed to licon.cseru10@gmail.com.