Christian Mbaba

Remote (Houston, Texas)

• Develop and maintain multiple Android applications using Kotlin or KotlinMultiPlatform with strong focus on clean, scalable code.
• Implement MVVM/MVI architecture and core design patterns such as Singleton, Observer, and Builder to ensure maintainable app structure.
• Integrate RESTful APIs with Retrofit and Ktor for efficient data handling using JSON/XML formats.
• Utilize Dagger/Hilt for dependency injection to enhance modularity and improve application performance.
• Building custom Android UI components and optimized views (Jetpack Compose) for dynamic content rendering.

Remote (Houston, Texas)

• Helped maintain a center of excellence around reusable components to guarantee a consistent application across USAA's digital platforms for service members, veterans, and their families.
• Developed sustainably accessible interfaces that met WCAG accessibility standards.
• Created reusable and flexible UI components that scaled across multiple design systems.
• Collaborated and worked cross-functionally between design and development.
• Kotlin, MVVM, Android Studio, CoRoutines, Flows, Jetpack Compose, GH Actions, Gradle, Git.

Remote (Houston, Texas)

• Wrote clean, concise, modular code in an agile environment and supported the Android ecosystem working across multiple devices: GoogleTV, FireTV, TV-Emulators along with their associated dev-options.
• Participated in the full lifecycle of software development (requirements gathering, designing, building, testing and maintenance).
• Developed native solutions that delivered on product strategy and adhered to established engineering best practices, design guidelines and principles.
• Kotlin, MVVM, CLEAN, Android Studio, AndroidTV, FireTV, CoRoutines, Flows, Jetpack Compose, GH Actions, ExoPlayer, Git.

Remote (Houston, Texas)

• Partnered with Software Engineers, UX/UI, Quality Engineers, Product Owners/Business Analysts to deliver high performing quality customer experiences that were engaging, purposeful and powerful in their simplicity.
• Ensured test coverage on sections of code that handled business logic.
• Automated deployment workflow to create & run UI tests and Unit tests on Github actions (CI/CD).
• Kotlin, MVVM, CLEAN, Android Studio, Hilt, Jetpack Compose, Espresso, Accessibility (WCAG), CoRoutines, Mockk, BrowserStack, Gradle, Git.

Remote (Houston, Texas)

• Responsible for building out, adding features and debugging a multi-factor identity authentication/authorization native application.
• Ensuring the best possible performance, quality, size and UI. Integrating 3rd party SDKs.
• Automating deployment workflow to build, upload and distribute new releases to the carriers, testers and other stakeholders.
• Integrating driver's license/passport scanning & validation tools for strong user validation and IAL2 verification for government entities.
• Kotlin, MVI, Android Studio, Hilt, CoRoutines, CircleCI, Figma, AppCenter, Lottie, JUnit, Gradle, Git.

Remote (Houston, Texas)

• Responsible for building secure smartphone SDKs and cloud-based platform based solutions for a variety of healthcare and Internet of Things (IoT) problems.
• Owned software in all phases of the SDLC from architecture and design through deployment and release.
• Designed and built out the next generation smart-phone cloud-based platform that can support future patient/device centric products and applications.
• Helped launch products in an FCC & FDA regulated industry.
• Influenced software engineering best practices within the team. Effectively presented and demonstrated various concepts and solutions to customers, partners, and leadership.
• Kotlin, Java, Android Studio, TDD, BLE, Realm, RxJava, CoRoutines, Mockk, Espresso, Bash, Gradle, Git.

Beaverton, Oregon

• Implemented workout sharing that allows millions of global weekly active users to be able to share workouts on their social media accounts.
• Implemented push notifications for users to see newly earned achievements that unlocks after completing workouts.
• Implemented A/B test & experiment to gather paywall metrics and improve customer subscription experience for users in EMEA, Japan & US.
• Implemented Onboarding UI with video player loop for a polished first-time user experience.
• Kotlin, MVVM, Android Studio, Room, CoRoutines, ExoPlayer, Optimizely, Mockk, NewRelic, Bash, Gradle, Git.

Remote (Houston, Texas)

• Provided development estimates and participated in feature requirement gatherings as well as project and test planning.
• Contributed to the architecture and design (architecture, design patterns, reliability and scaling) of the system.
• Responsible for converting codebase from no architecture to MVP and from Java to Kotlin.
• Identified areas in need of refactor or modularity to help maintain code quality, code organization, automation and testing.
• Kotlin, Java, MVVM, MVP, Android Studio, SQLite, Firebase (Cloud Messaging, Test Labs), Mockito, Gradle, Git.

Manhattan, New York

• Co-created a video and music streaming application with 10,000,000+ installs.
• Responsible for 'Youtube-like' draggable video player with Picture-In-Picture as well as auto-rotation based on user's screen orientation.
• Implemented pausing and resuming of audio/video downloads.
• Collaborated with cross-team of developers, testers, designers and stakeholders.
• Java, MVP, Android Studio, Glide, Realm, ExoPlayer, Espresso, Mockito, Chromecast, RxJava, Gradle, Git.

Houston, Texas

• Developed various applications available on Google Play Store
• Java, MVP, Eclipse, Android Studio, Azure, Fastlane, Dagger, ButterKnife, Firebase (Authentication, Database), JUnit, RxJava, Gradle, Git