AndroidDevKit

Focused, open-source Android interview preparation.

androiddevkit.com is a community-built resource for Android engineers preparing to switch jobs, with curated interview questions, topic-by-topic guides, timed practice sessions, and real interview experiences. No paywall, no sign-up, ever.

Built with Astro, authored in Markdown, and deployed on Cloudflare Pages.

Features

• Topic guides - 8 in-depth guides covering Kotlin, Coroutines, Jetpack Compose, Android architecture, system design, and more, each anchored to its own curated question bank.
• Question bank - 250+ standalone, difficulty-tagged questions (junior, mid, senior) with answers that explain the why, not just the what.
• Interview Practice mode - build a timed 10–20 question mock interview by topic, format (MCQ, written rehearsal, or mixed), and difficulty. Answer under pressure, score your run, and chase your personal best.
• Progress tracker - mark questions as done and track readiness per topic. Saved privately in your browser; no login required.
• Interview experiences - first-hand write-ups of real interviews, including rounds, questions asked, and outcome.
• Blog - longer-form guides on preparing, negotiating, and growing as a mobile engineer.
• Instant site-wide search - a single search overlay indexes every topic, question, experience, company, and blog post for zero-latency lookup.
• Editorial policy & content quality gate - every contribution is checked for accuracy, clarity, and level before it ships, enforced automatically by npm run content:check in CI.
• Fully open source - every question, answer, and article lives in this repo as Markdown. Fix a typo, add a question, or share your interview in minutes.

Contributing

This site is only as good as the community makes it. Submit a question, correction, topic, article, or interview experience through the on-site form without a GitHub account, or contribute a Markdown file and pull request directly. See CONTRIBUTING.md for both paths.

Local development

npm install
npm run dev      # http://localhost:4321

Command	Action
npm run dev	Start the dev server
npm run content:check	Validate content quality (runs before build)
npm run build	Build the static site to ./dist/
npm run preview	Build, then preview with Wrangler locally
npm run deploy	Build and deploy via Wrangler

Project structure

src/
├── content/
│   ├── topics/        # one file per topic (the spine of the site)
│   ├── questions/     # one file per Q&A, references a topic
│   ├── experiences/   # one file per interview write-up
│   └── blog/          # articles & guides
├── data/               # practice-mode MCQ bank
├── components/         # UI building blocks
├── layouts/            # page shells
├── pages/              # routes (incl. practice, progress, search index, RSS)
└── styles/             # design tokens & global CSS

Content schemas live in src/content.config.ts.

Deployment

Static build on Cloudflare Pages:

• Build command: npm run build
• Output directory: dist

Every merged PR to main triggers an automatic deploy.

Support

AndroidDevKit is free and has no paywall. If it helped you prep, you can support its upkeep on Ko-fi:

License

MIT - content and code. Use it, fork it, learn from it.