i
iodevblue

Emmanuel E

@iodevblue

Native Android, iOS, Flutter Developer

Nigeria
English
About me
Hello there! I'm Emmanuel, a native Android/iOS platform specialist and a Flutter/Jetpack Compose multi-platform developer with over 6 years of experience. With a strong foundation in mobile app development, I turn your innovative ideas into powerful, polished and high-performing applications. I also have experience with C/C++ native code allowing me to handle lower-level and hardware synchronization tasks for specialized projects. Whether you need a native app or a cross-platform solution, I’ve got you covered. ... Read more

Skills

i
iodevblue
Emmanuel E
Offline • 

See my services

Technical Writing
I will document your java and kotlin apis using javadoc or dokka
From$15 / projectMore details
Mobile App Customization
I will convert and migrate codes in java to kotlin and vice versa
From$5 / projectMore details

Portfolio

Work experience

Lead Android Engineer

VB Apps • Freelance

Oct 2024 - Sep 2025 • 11 mos

- Led Android development for 10+ published apps, driving performance optimization, UI/UX refinement and advanced audio features. - Modernized legacy projects by reskinning, updating Gradle dependencies and fixing critical bugs. - Engineered specialized audio frameworks with stereo panning, custom noise generators and tone synthesis. Key Highlight – Tinnitus Relief App - Wrote all the stable therapeutic engines and mathematical formulas powering the app’s core treatment features, delivering the first reliable Android implementation for tinnitus therapy. - Built multiple advanced audio generators in Kotlin: - Coordinated Reset Neuromodulation Tone Generator (mathematically precise tone sequencing for therapy). - Notched Frequency Generator (custom-filtered audio therapy for tinnitus treatment). - White Noise & Tone Generators (with dynamic frequency/EQ control). - Developed the Hearing Test UI with graph-based visualization and integrated logic to map results to treatment parameters. - Optimized audio performance and latency handling to ensure smooth playback across devices. - Personally authored and validated the mathematical formulas and Digital Signal Processing (DSP) algorithms powering the therapy, ensuring clinical accuracy and reliable user experience. - Filtering frequencies – implemented custom filters for the Notched Frequency Generator. - Generating and shaping sound – built white noise and tone generators with real-time synthesis. - Adjusting playback – added stereo panning, volume control, EQ adjustments, and fade-in/out effects. - Applying transformations – integrated frequency domain calculations (FFT), wave shaping, and resampling logic for precise sound manipulation. - Contributed significantly to product design, aligning medical therapy principles with usable and engaging mobile UX.

Lead Android/iOS Engineer

Lifeline Africa

Oct 2024 - Dec 2024 • 2 mos

- Built and published the first Android version of the app to the Google Play Store. - Engineered custom UI effects, including a parallax splash screen (Android & iOS) and a spinning launch animation (Android). - Developed core features, including the Home screen, Profile page, Sign-up and Sign-in flows. - Optimized cross-platform performance, ensuring smooth native experiences on both Android and iOS. - Collaborated with backend engineers to synchronize app functionality across platforms. - Interviewed and evaluated Android/iOS engineers, contributing to team growth. - Implemented pixel-perfect UI designs and provided ongoing design support. - Authored documentation to ensure maintainability and support future development. - Set up distribution pipelines, including Google Play testing tracks (alpha/beta) and TestFlight testing for staged rollout and QA. - Assisted in Play Store setup and release process, ensuring compliance and smooth deployment.