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Ghozi Mahdi

@ghozimahdi

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Senior Mobile Developer at Mengantar Karya Bangsa who migrated its logistics platform to Flutter.

Indonesia

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At Mengantar Karya Bangsa, I led the migration of the logistics platform from React Native to Flutter, creating a unified Android and iOS codebase. I also built Formulir, an online ordering platform, and developed backend services for reliable order processing.

I architected the flagship Flutter app to support over 100,000 concurrent users and improved its crash-free user rate from 80% to 98%. Automating Android and iOS deployment pipelines reduced deployment time by 50%.

At Serasi Autoraya, I developed the IBID auction apps and helped move a legacy Java MVP architecture to Kotlin Clean Architecture. I also drove adoption of Jetpack Compose for the team.

Across freelance projects, I’ve built mobile and web products including ninaite.ai, Rumah123 Pro, and Otobagus. I also developed Android curriculum and mentored students at Binar Academy, and created open-source Claude Code plugins for Flutter development.

Experience

Work history, roles, and key accomplishments

Current

Senior Mobile Developer

Current

Mengantar Karya Bangsa

Dec 2023 - Present (2 years 10 months)

Led the end-to-end migration of the logistics platform from React Native to Flutter and built the Formulir online ordering platform from the ground up. Developed backend services with Express.js, MongoDB, and Redis, and automated CI/CD pipelines for Android and iOS.

Flutter React Native Clean Architecture ExpressJS MongoDB Redis Rust CI CD Firebase Crashlytics

Mobile App Engineer

Ninaite

Dec 2025 - Jun 2026 (6 months)

Built ninaite.ai, a residence-status management platform, developing the web application and backend from scratch using Ruby on Rails, Hotwire, and PostgreSQL. Developed Talent and Client mobile apps in Flutter.

Ruby on Rails Hotwire PostgreSQL Flutter

Flutter Engineer

99 Group

Jul 2024 - Dec 2025 (1 year 5 months)

Led the migration of Rumah123 Pro from native Kotlin and Swift to Flutter, and re-architected the SRX Property application with modular Clean Architecture. Integrated analytics using Netcore, Segment, and Firebase.

Flutter Kotlin Swift Clean Architecture .NET Core Segment Firebase

Android Developer

Kompas Media Nusantara

Aug 2023 - Dec 2023 (4 months)

Developed Kompas Harian, a digital news application, using modular architecture and Jetpack Compose. Facilitated technical discussions and knowledge sharing within the mobile team.

Jetpack Compose Modular Architectures Android

Android Developer

Serasi Autoraya

Feb 2021 - Dec 2023 (2 years 10 months)

Led development of the IBID auction application using Kotlin and Jetpack Compose, and spearheaded a major refactoring from legacy Java MVP to Kotlin Clean Architecture. Established coding standards and project templates across the team.

Kotlin Jetpack Compose Clean Architecture Java MVP Flutter Web

Subject Matter Expert, Android Development

Binar Academy

Jan 2020 - Sep 2023 (3 years 8 months)

Served as the primary Subject Matter Expert, developing the official Android curriculum and mentoring over 100 students on Kotlin, Jetpack Compose, and Clean Architecture. Placed over 20 mentees into technical roles at top tech companies.

Kotlin Jetpack Compose Clean Architecture Mentorship

Mobile Developer

Anakaiti.id

Feb 2023 - Jul 2023 (5 months)

Built Otobagus, a real-time vehicle auction platform, from the ground up using Flutter and the BLoC pattern. Engineered real-time bidding with the MQTT protocol, handling thousands of concurrent users.

Flutter BLoC MQTT

Android Developer

Aman Informasi

Jun 2019 - Jan 2021 (1 year 7 months)

Developed Chatme, a secure real-time chat application for internal corporate communication, using Flutter and Firebase Realtime Database. Implemented Flutter best practices to ensure a scalable and maintainable codebase.

Flutter Firebase Realtime Database

Android Developer

Visiary

Jan 2018 - Jan 2019 (1 year)

Co-developed Visiary, a video editing and advertising platform, using Java and Kotlin. Oversaw end-to-end development of Wakaf Ikhlas, a digital waqf donation app, including integration with banking services.

Java Kotlin Android