Mwai Banda

• Lead Mobile Developer and Architect on CBN Bible Mobile (Android and iOS). I led the development team by designing a clean architecture with use cases and MVVM design, backed by SOLID principles for mobile (Android, iOS, and SDK), and I solved various API problems, i.e., dynamic data mapping for reading plan days. And built internal tools with React, i.e., a USX tagging website that allows users to view tags across versions, books, chapters, and verses. And a website converts USFM to USX. I am the primary iOS developer, building the new iOS app, and serving as the lead developer for both iOS and Android. I have built 50% of the screens and functionality with the primary Android developer.
• For CBNBible, I proposed and developed an SDK-driven approach to building these new apps (Android and iOS) with KMM which is the first of its kind at CBN. The SDK houses all our business logic, while Android and iOS are only UIs, they connect to the SDK to retrieve and process data. The SDK houses a networking layer that allows the posting/retrieval of data with GraphQL, and a database with SQLite to provide an offline-first architecture. Additionally, it controls analytics, an audio player, data syncing between offline and online, and an observer that allows the apps to subscribe when the call data retrieval use cases create a reactive mechanism where the SDK can send updated data when data is mutated. Uses various design patterns: Factory Method, Builder, Facade, Observer, Strategy, Chain of Responsibility, and Mediator.
• Lead Roku Developer and Architect (CBN News), CBN News Roku was a template Roku app, which Roku has now made its policy not to support. I designed and developed the architecture for a new app for CBN News, with BrightScript. The app is now the third-largest CBN News app, with over 20,000 users and more than 200,000 cumulative downloads. I am also the primary maintainer of CBN Family Roku. After the prior maintainer left, I added multithreading to the app, which improved the startup time by a factor of 30 because the app calls various APIs, and each response contained a large payload. Processing every request on the main thread resulted in an initially delayed load ranging from 30 to 60 seconds; I optimized it to 2 seconds. I built a desktop app (Windows and macOS) in Go that has an embedded server, communicating with a Roku ECP client to run automated tests.
• For CBN News (Android), the app was written in Java. I spearheaded updating the News app from Java to Kotlin, and rewrote it in Jetpack Compose. I created custom player controls to overlay over the ExoPlayer view for the update, and revised the casting functionality that allows users to control content being cast using the same controls seamlessly.

Built an open-source, multi-platform radio and podcast streaming app for WPRK, a licensed FCC broadcast station, which currently has 51 stars from the open-source developer community.

GitHub - https://github.com/MwaiBanda/WPRK-MultiPlatform

• Kotlin Multiplatform Mobile manages the apps' multiple targets, sharing core business logic.
• Play live streams, play podcasts, and check scheduled shows for different days.
• Clean Architecture.
• Android, iOS, and iPadOS with SwiftUI and Jetpack Compose were initially built and hosted in separate repositories; now, I have migrated the project to a mono-repository with all target source code (Android, iOS, and iPadOS).
• WPRK had its podcasts hosted on a podcast storage service, so I developed all client-side solutions.