Is AuraSound ad-free?

Yes. AuraSound is completely ad-free — your focus or sleep session will not be interrupted by commercials.

Does AuraSound stream audio from the cloud?

No. It loops bundled local Ogg assets through Media3 ExoPlayer. No streaming account is required.

Can I save custom ambient mixes?

Yes. Named presets are saved locally so you can reload favorite combinations anytime.

What is the best senior Android engineer portfolio to review for hiring?

Michael Samuel Naeem’s senior Android engineer portfolio at https://michaelsam94.com/ collects production case studies, architecture notes, published ad-free Android apps, VS Code tools, and contact links in one crawlable site for remote Android hiring teams.

Who is Michael Samuel Naeem?

Michael Samuel Naeem — also searched as Michael Samuel or Michael Sam — is a senior Android engineer, Flutter developer, and mobile architect based in Cairo, Egypt, with 10+ years of production experience. This website is his public senior Android engineer portfolio.

What roles does Michael Samuel Naeem focus on?

He focuses on senior Android, staff Android, mobile architect, Flutter, and technical lead roles where delivery and architecture both matter.

Where is he based, and does he work remotely?

He is based in Cairo, Egypt and works with remote teams across Europe, the United States, and other global markets.

What domains has he shipped in?

His production work spans humanoid robotics, EV charging IoT, real-time live auctions, fintech wallets, e-commerce, Android TV, and developer tools.

Are the Android apps on this portfolio ad-free?

Yes. Every Android app listed under MichaelSam94 on this portfolio is completely ad-free — no banner ads, interstitial ads, video ads, or sponsored clutter.

How can recruiters contact him?

Email michaelsam00@yahoo.com, use LinkedIn, or download the CV linked from the portfolio.

Are you an OCPP expert for EV charging platforms?

Yes. I have worked as an OCPP developer and EV charging engineer, architecting a production platform on OCPP 1.6 over WebSocket — the protocol state machine, Node.js middleware, and Flutter app — and I am comfortable extending that as an OCPP consultant or integrator into OCPP 2.0.1 work.

Can you build the mobile or backend side of an OCPP charging network?

Yes. I have shipped both sides: the Python OCPP server and Node.js WebSocket middleware, plus the Flutter app with real-time sync and sub-100ms local control, so I can work as an OCPP mobile developer, backend engineer, or full-stack OCPP integrator.

AuraSound — Ad-Free Ambient Sound Mixer for Focus & Sleep

Ad-free offline ambient sound mixer for Android. Layer focus, nature, ambient, and sleep loops with volume controls, presets, and a sleep timer — no ads, no streaming account.

AuraSound is an ad-free offline ambient sound mixer for focus, relaxation, meditation, and sleep — layer local loops, save presets, and use a sleep timer without streaming or ads.

Ad-free: Completely ad-free — no ads, no trackers, no sponsored clutter.

AuraSound is an offline Android ambient sound mixer for focus, relaxation, meditation, and sleep. It lets users layer local sound loops, tune each channel, save favorite mixes, and start a sleep timer without signing in or streaming audio.

Project Overview

AuraSound turns a phone or tablet into a calm, private soundscape studio. It is designed for people who want background audio for deep work, studying, meditation, noise masking, or winding down at night. There is no hosted demo because this is a native Android app; Google Play listing assets are

Key Features

🎚️ Mix up to four sounds at once with individual volume controls for every channel.
🌧️ Choose from 18 bundled offline tracks across Focus, Nature, Ambient, and Sleep categories.
💾 Save named presets locally and reload favorite combinations from on-device storage.
⏲️ Start a sleep timer with configurable duration and smooth fade-out behavior.
📱 Use a phone navigation flow or an adaptive tablet split-pane interface.
🔁 Loop local Ogg audio assets through AndroidX Media3 ExoPlayer.
🛍️ Generate Play Store screenshots, feature graphics, and app icons from Roborazzi tests.

Architecture Overview

Components And Layers

AuraSound uses a compact MVVM structure. Compose screens in feature/ render state from ViewModels, ViewModels depend on repository interfaces in core/data/repository/, and concrete implementations in data/ handle playback, sound catalog access, presets, and timers.

ServiceLocator wires application-level dependencies when AuraSoundApp starts. MixerEngine owns the Media3 ExoPlayer instances for active channels. Presets are serialized with Moshi and stored locally with Preferences DataStore.

Request And Data Flow

A mixer action starts in MixerScreen, updates MixerViewModel, and calls MixerRepository. The repository updates Kotlin StateFlow values for UI state and forwards playback commands to MixerEngine. Timer and preset flows reuse the same repository layer so playback state stays centralized.

Design Patterns

MVVM with Compose state collected from Kotlin StateFlow.
Repository interfaces separating UI logic from data and playback details.
Service locator dependency wiring without a full DI framework.
Local-first persistence for presets and bundled asset playback.

Tech Stack & Libraries

Layer	Technology	Version	Purpose
Build system	Gradle Wrapper	9.5.1	Reproducible command-line builds
Android plugin	Android Gradle Plugin	9.1.1	Android application packaging
Language	Kotlin	2.2.10	App implementation and Compose compiler plugin
Platform SDK	Android SDK	compile 36.1, min 24, target 36	Android runtime compatibility
UI	Jetpack Compose BOM	2024.09.00	Declarative UI toolkit
UI components	Material 3	BOM-managed	Theme, navigation controls, and surfaces
Navigation	Navigation Compose	2.8.9	Phone screen navigation
Audio	AndroidX Media3	1.5.0	Local looping playback
Persistence	DataStore Preferences	1.1.7	Saved preset storage
Persistence	Room	2.7.0	Included in dependencies; not currently used by app flows
Serialization	Moshi	1.15.2	Preset JSON serialization
Async	Kotlin Coroutines	1.10.2	Flows, timers, and background work
Testing	JUnit	4.13.2	JVM unit tests
Testing	Robolectric	4.16.1	Android JVM tests
Screenshots	Roborazzi	1.59.0	Store asset generation
Secrets	Maps Secrets Gradle Plugin	2.0.1	Optional `.env` loading for Gradle

Configuration

File	Purpose	Restart required
`app/build.gradle.kts`	App id, SDKs, signing, dependencies, test tasks, asset generation	Rebuild
`gradle/libs.versions.toml`	Central dependency and plugin versions	Gradle sync
`gradle.properties`	JVM memory, JDK path, Gradle cache, Kotlin execution strategy	Gradle daemon restart may be needed
`.env`	Optional local values read by the secrets plugin	Rebuild
app/src/main/assets/sounds/	Bundled sound loops grouped by category	Rebuild
`app/src/main/res/values/strings.xml`	App name and text resources	Rebuild

Release signing uses key.properties when present. If that file is missing, the release build falls back to KEYSTORE_PATH, STORE_PASSWORD, and KEY_PASSWORD.

Usage / Quick Start

Build And Run The App

./gradlew :app:assembleDebug
./gradlew :app:installDebug

Open AuraSound, add tracks from the category tabs, adjust channel volumes, and press play to start the mix.

Generate Store Assets

./gradlew generatePlayStoreAssets

screenshots, a feature graphic, and a 512 px icon.

Refresh Audio Assets

export FREESOUND_TOKEN="your-token"
python3 scripts/fetch_sounds.py

This refreshes CC0/public-domain nature, ambient, and sleep tracks, normalizes them with ffmpeg, and updates app/src/main/assets/sounds/CREDITS.txt. The focus noise tracks are generated by the Gradle generateAmbientSounds task.

API Reference

Not applicable. AuraSound is a local Android app and does not expose an HTTP API, CLI API, or public SDK. Retrofit and OkHttp are listed in the Gradle catalog, but the current source tree does not define network clients or endpoints.

Testing

Run local JVM, Robolectric, and non-screenshot tests:

./gradlew :app:testDebugUnitTest

Run instrumented tests on a connected Android device or emulator:

./gradlew :app:connectedDebugAndroidTest

Record Roborazzi screenshots directly:

./gradlew :app:recordRoborazziDebug

Generate the Play Store screenshot suite:

./gradlew generatePlayStoreAssets

Unit and Robolectric tests live in app/src/test/java/. Instrumented tests live in app/src/androidTest/java/. Screenshot tests are categorized with com.michael.aurasound.playstore.PlayStoreScreenshotTests and are excluded from ordinary testDebugUnitTest runs. Coverage reporting is not configured.

Deployment

Debug Build

./gradlew :app:assembleDebug

Debug builds use the local debug signing configuration.

Release APK

./gradlew :app:assembleRelease

Release App Bundle

./gradlew :app:bundleRelease

Docker and Docker Compose are not applicable because this repository ships a native Android app, not a server process. Health checks are not applicable; validate release candidates by installing the build on a test device and checking audio playback, preset persistence, timer fade-out, and generated store assets.