Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I'm a senior mobile developer specializing in Flutter, with 5+ years of experience delivering high-performance, offline-capable apps for Android, iOS, and the web. I enjoy turning complex problems into clean, scalable mobile experiences, and I thrive in fast-paced, collaborative environments. I've led cross-functional teams, implemented CI/CD pipelines, and partnered with backend engineers to build maintainable architectures (MVVM, Clean Architecture) and robust API integrations. My work has consistently improved app performance, deployment speed, and cross-platform reliability.…I'm a senior mobile developer specializing in Flutter, with 5+ years of experience delivering high-performance, offline-capable apps for Android, iOS, and the web. I enjoy turning complex problems into clean, scalable mobile experiences, and I thrive in fast-paced, collaborative environments. I've led cross-functional teams, implemented CI/CD pipelines, and partnered with backend engineers to build maintainable architectures (MVVM, Clean Architecture) and robust API integrations. My work has consistently improved app performance, deployment speed, and cross-platform reliability.

Morka Joshua

App Developer, Full Stack Developer, Front-End Developer, +3





I'm a senior mobile developer specializing in Flutter, with 5+ years of experience delivering high-performance, offline-capable apps for Android, iOS, and the web. I enjoy turning complex problems into clean, scalable mobile experiences, and I thrive in fast-paced, collaborative environments. I've led cross-functional teams, implemented CI/CD pipelines, and partnered with backend engineers to build maintainable architectures (MVVM, Clean Architecture) and robust API integrations. My work has consistently improved app performance, deployment speed, and cross-platform reliability.…I'm a senior mobile developer specializing in Flutter, with 5+ years of experience delivering high-performance, offline-capable apps for Android, iOS, and the web. I enjoy turning complex problems into clean, scalable mobile experiences, and I thrive in fast-paced, collaborative environments. I've led cross-functional teams, implemented CI/CD pipelines, and partnered with backend engineers to build maintainable architectures (MVVM, Clean Architecture) and robust API integrations. My work has consistently improved app performance, deployment speed, and cross-platform reliability.

Available to hire

I’m a senior mobile developer specializing in Flutter, with 5+ years of experience delivering high-performance, offline-capable apps for Android, iOS, and the web. I enjoy turning complex problems into clean, scalable mobile experiences, and I thrive in fast-paced, collaborative environments.

I’ve led cross-functional teams, implemented CI/CD pipelines, and partnered with backend engineers to build maintainable architectures (MVVM, Clean Architecture) and robust API integrations. My work has consistently improved app performance, deployment speed, and cross-platform reliability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Javanese

Advanced

English

Fluent

Work Experience

Lead Mobile App Developer (Flutter) at Mowo Africa

October 1, 2024 - September 30, 2025

Led the development of Flutter-based mobile applications for Mowo Africa's marketplace. Built full Flutter architecture, navigation flow, and reusable UI components for Android, iOS, and web. Integrated RESTful APIs and payment services; improved app performance by 40%, reduced deployment time by up to 95%, and increased platform reliability by 30–50% through clean code, architecture, and optimization.

Lead Mobile App Developer (Flutter) at Carburant.io

May 1, 2023 - September 30, 2024

Led mobile app development with Flutter, built full architecture, implemented state management, and integrated REST APIs and payments. Enhanced UI/UX and collaboration with backend engineers to improve reliability and deployment speed.

Mobile App Developer at PeersApp Inc

May 1, 2022 - February 28, 2023

Built PeersApp from scratch including onboarding, feeds, messaging, and learning modules. Delivered a complete Flutter-based architecture with offline-ready modules, and set up CI/CD pipelines to accelerate releases and improve stability.

Flutter Mobile App Developer at Side Hustle 5.0

April 1, 2022 - August 31, 2022

Led a Side Hustle project to develop Flutter-based mobile apps (Speak Better). Built from scratch with onboarding, feeds, chat, and learning modules; coordinated a 4-person team to accelerate delivery and collaboration using Agile practices.

Mobile App Developer at Nexso Technologies Inc

February 1, 2020 - November 30, 2021

Gained hands-on experience with Kotlin, Java, and C/C++ for mobile and software development. Enhanced debugging accuracy by 30% and improved component stability by 25% while supporting development of mobile features and backend logic.

Software Developer at Handook Global Ltd

January 1, 2023 - June 30, 2023

Improved team productivity by 45% through CI/CD automation; contributed to multiple mobile development projects during high-intensity development cycles.

Lead Mobile App Developer at Mowo Africa

October 1, 2024 - September 30, 2025

Led the development of Flutter-based marketplace apps with payments, maps, and routing features for buyers and sellers. Built reusable UI components for Android, iOS, and web; integrated REST APIs; implemented state management (Provider, Riverpod, Bloc); improved authentication, offline capabilities, and UI/UX. Implemented CI/CD pipelines (GitHub Actions, Shorebird) and streamlined release processes for App Store and Play Store deployments. Collaborated with backend engineers to ensure scalable cross‑platform delivery.

Mobile Application Developer at Nexso Technologies Inc

February 1, 2020 - November 2, 2021

Enhanced debugging accuracy by 30% and improved component stability by 25% while developing mobile features and backend logic using Kotlin, Java, C, and C++. Contributed to multiple mobile projects and collaborated with backend teams to deliver robust software.

Lead Development Engineer at PeersApp Inc

May 1, 2022 - February 28, 2023

Led development of Mowo Africa, a marketplace app with payments, maps, and routing features for buyers and sellers. Improved routing accuracy by 50%, app performance by 40%, and reduced deployment time by 90% through CI/CD automation. Built full Flutter architecture and backend integrations; collaborated with product stakeholders and backend teams; implemented onboarding, feeds, chat, and learning modules.