cscoderr

Senior Mobile Engineer

Senior Mobile Engineer with 6+ years building and shipping production cross-platform apps in Flutter, React Native, and Swift. I've shipped consumer products used by tens of thousands of users, authored a multi-platform payment SDK at Mona Finance, and built e-commerce experiences with complex multi-language localization at Golden Spark.
My work tends to live where mobile gets interesting: SDK design, native Android/iOS interop, performance work, and the small details that make apps feel fast.
Outside work, I build and maintain open-source projects for the Flutter community — Flutter Advance (470+ ⭐), an open-source Ethereum wallet, and a voice-based AI assistant powered by Gemini. I'm also building Screencord, a macOS screen recorder.
I work best with startups that need someone who can take a mobile product from spec to App Store — owning architecture, native integrations, CI/CD, and release engineering end-to-end.

🚀 Currently open to new remote opportunities, always happy to chat with teams building something interesting. Let's connect.


Experience: 6 years

Yearly salary: $50,000

Hourly rate: $25

Nationality: 🇳🇬 Nigeria

Residency: 🇳🇬 Nigeria


Experience

Flutter Developer
VANRISE SOLUTION
2023 - 2023
Conceived, constructed, and sustained the Propx mobile application—a platform for seamless call/SMS generation and VoIP call logging via API integration or push notifications. Transitioned the existing Android application to Flutter, resulting in a notable 50% improvement in app efficiency and crash reduction. Implemented Android notification listener and background processing to log VoIP calls received from WhatsApp/Viber on the user's device to the API, enhancing call tracking capabilities. Enhanced user experience by integrating customizable features for generated calls and SMS, including options for Post-Dial Delay (PDD) and SIM slot selection. Created and maintained in-house plugins, ported from Android, to bolster the app's compatibility with the Android Telecom API, incorporating a custom dialer and call screen for improved functionality.
Senior Mobile Engineer
ATHENA TECH SERVICE
2022 - 2024
Developed company mobile applications utilizing Flutter framework, Reactive Caching and Data-binding Framework (Riverpod), integrated Agora SDK and optimized performance based on user feedback with over 5k downloads and positive reviews. Worked closely alongside both the design, product and marketing team in various cross-functional meetings, fostering a synergistic work relationship that resulted in an impressive 30% reduction in overall task delivery time. Collaborated with the whole team to make informed decisions on the app's UI and performance to ensure optimal UX and app performance, resulting in a 10% increase in development time. Implemented Domain-Driven Design (DDD) to boost app modularity, streamline business logic, and ensure a scalable architecture, fostering collaborative development and aligning with industry best practices. Utilized Fastlane for automating iOS and Android builds, streamlining workflows, and achieving 50% greater productivity and deployment efficiency across both App Store and Play Store releases.
Flutter Engineer
WESY
2022 - 2022
Designed, Developed and Maintained the mobile application to provide seamless usage, better experience and high performance to over 500+ active users. Conceptualized and enforced testing and automation practices that led to a 90% reduction in reported bugs. Ensured optimal performance, quality, and responsiveness of the application by interacting with RESTful APIs to connect with the backend and third-party services. Teamed up with designers, project managers, and fellow developers to optimize app development processes for enhanced efficiency and effectiveness.
Flutter Engineer
VISCIO
2021 - 2021
Employed Flutter to develop and oversee the Viscio User and Driver app, serving the needs of a swiftly growing user community exceeding 500+ individuals. Ensured high code quality through frequent code reviews and refactoring, resulting in a 15% improvement in app load time. Prioritized separation of business logic from the UI by implementing the Model-View-ViewModel (MVVM) architecture pattern in the app. Developed and maintained both the user and driver applications, which incorporated Google Maps, Google Places, WebSocket, and In-App Chat functionalities, as a sole developer.
Mobile and Web Developer
DARAJEPH TECHNOLOGIES
2020 - 2021
Engineered Piggisty, a user-friendly Piggy bank app, utilizing the Flutter Framework to streamline development and deliver an innovative and intuitive user experience. Engaged closely with team members, driving significant contributions to the development process, resulting in a 20% acceleration of project timelines. Crafted code that's elegant, self-documented, and adherent to industry standards, enhancing readability and facilitating seamless adaptation, testing, and maintenance, resulted in 20% reduction in debugging time across team projects. Mentored junior developers, imparting valuable insights into web development best practices. Conducted thorough assessments and enhanced the performance of 2+ pivotal Laravel projects, resulting in an impressive 60% overall performance gain.

Skills

android
flutter
ios
kotlin
react-native
swift
english