Android & Kotlin Mobile Engineering Bootcamp Certificate

Checkpoint 1: Build a Kotlin foundation module using null safety, sealed/data classes, collections and coroutines; document thread/cancellation behavior.
Checkpoint 2: Create a multi-screen Android app with Jetpack Compose, navigation, state handling and accessible responsive UI for phone-size variations.
Checkpoint 3: Add Room local persistence with a repository boundary and offline behavior; test create/read/update/delete plus migration/error cases.
Checkpoint 4: Integrate a remote REST API with Retrofit and coroutines; model loading/error/success states and handle retries, timeouts and malformed responses.
Checkpoint 5: Add one device/cloud capability such as Firestore, permissions, location or Maps; implement permission denial and degraded/offline behavior.
Checkpoint 6: Refactor into a testable architecture, add unit/UI tests, inspect performance/recomposition or startup behavior, then build a release artifact.

Day 1: Choose a real mobile workflow; define users, screens, data model, offline needs, permissions, API/cloud dependencies and acceptance criteria.
Day 2: Implement Kotlin domain/data foundations and Compose navigation/state for the core screens; include accessibility labels and empty/error states.
Day 3: Add Room persistence and repository/data-source boundaries; prove offline read/write behavior and one schema/error edge case.
Day 4: Integrate Retrofit or another real API with coroutines; add serialization, timeout/retry behavior and deterministic network test doubles.
Day 5: Add Firestore or a device capability such as location/Maps; handle permissions, privacy disclosure, unavailable services and fallback UX.
Day 6: Add automated tests and performance checks; inspect recomposition/startup/network behavior, fix one measurable issue and create a signed/release build.
Day 7: Publish repo, architecture diagram, test report, performance evidence, screenshots/demo video, privacy/permission note and release/runbook instructions.