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Cross-Platform KMP
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Available for Mobile Dev Projects (Android & iOS)

Crafting High-Performance Mobile Experiences

Performance-driven Mobile App Developer specializing in Android (Kotlin, Jetpack Compose), iOS (Swift, SwiftUI), and Kotlin Multiplatform (KMP). Dedicated to building offline-first architectures, scalable mobile modularity, and smooth user interfaces.

Explore Projects View Resume / CV
Samsul Aripin
Specialization
Native Android & iOS
Cross-Platform
Kotlin Multiplatform
4+
Years Experience
99.8%
Crash-Free Rate
40%
Faster App Load Times
10+
Mobile Apps & Modules
Portfolio Showcase

Featured Mobile Applications

MSaveMoney Preview
iOS Native 2026

MSaveMoney App

Offline-first iOS native financial tracking app with interactive visual charts and real-time cloud data synchronization.

  • Built with SwiftUI & SwiftData for local persistence.
  • Integrated Swift Charts for 7-day expense analytics.
  • Implemented Cloud Firestore real-time sync with strict per-user Security Rules.
  • AI Acceleration: Leveraged LLMs & Prompt Engineering for rapid UI prototyping.
SwiftUI SwiftData Swift Charts Firebase Firestore
Jegeg & Bangunan POS Preview
Android Enterprise POS 2025

Zenenta POS Suite

Modular Android POS & PPOB transaction system with Bluetooth ESC/POS thermal printer driver integration and multi-feature modules.

  • Developed modular features for sales distribution, variant inventory, and PPOB virtual top-ups.
  • Engineered hardware-level ESC/POS Bluetooth thermal printing driver for raw receipt commands.
  • Built with Kotlin, Jetpack Compose, and Koin/Hilt for Dependency Injection.
Kotlin Jetpack Compose Koin / Hilt ESC/POS Printing
Dealjava App Preview
Android Native • E-Commerce 2022 - 2026

Dealjava Android App

Mobile E-Commerce & Deals application for customer and merchant management with seamless payment gateway integration and high crash-free performance.

  • Re-engineered legacy codebase to Kotlin & MVVM, achieving 40% faster load times.
  • Integrated Payment Gateways, Maps, and Push Notifications, boosting engagement by 90%.
  • Maintained crash-free sessions rate at over 99.8%.
Kotlin MVVM Payment Gateway Push Notifications
Dealjava iOS Preview
iOS Native • Swift & UIKit 2022 - 2024

Dealjava iOS App

Complete customer application rewrite using Swift & UIKit (MVVM) architecture with high performance, smooth animations, and App Store Connect releases.

  • Led complete rewrite of Customer App using Swift & UIKit (MVVM).
  • Managed App Store Connect & TestFlight release cycles.
  • Optimized app memory usage using Xcode Instruments.
Swift UIKit MVVM TestFlight App Store
Career History

Professional Experience

Freelance Android Developer

Zenenta • Semarang (Remote)
Nov 2024 - Present
  • Simplidot: Developed modular Android distribution and sales management app using Kotlin, Jetpack Compose, and Koin/Hilt.
  • Tiket Umroh: Built Umrah ticket booking & pilgrimage management application module.
  • Jegeg POS & Bangunan POS: Engineered customized Point-of-Sale (POS) solutions for retail, beauty, and building material supply stores.
  • Integrated ESC/POS thermal printing commands directly into transactional printing flows.

Android Developer

Dealjava • Surabaya (Remote)
Aug 2022 - Aug 2026
  • Led mobile development lifecycle for Customer & Merchant mobile applications.
  • Re-engineered legacy codebases to Kotlin & MVVM, achieving 40% faster load times.
  • Integrated Payment Gateways, Maps, and Push Notifications, boosting engagement by 90%.
  • Reduced crash rates to under 0.2% (99.8% crash-free sessions).

iOS Developer

Dealjava • Surabaya (Remote)
Dec 2022 - Nov 2024
  • Led complete rewrite of Customer App using Swift & UIKit (MVVM).
  • Managed App Store Connect & TestFlight release cycles.
  • Optimized app memory usage using Xcode Instruments.

Freelance Android Developer

PDAM TIRTA DARMA • Probolinggo
Nov 2023 - Feb 2024
  • Developed "Field Operation" app for water meter recording.
  • Built Offline-First architecture using Room Database for unstable network areas.
  • Engineered background data synchronization using WorkManager.

Facilitator Android Intermediate

Digital Talent Scholarship • Jakarta (Remote)
Jul 2022 - Nov 2022
  • Mentored students in DTS PRO A program adhering to Google & Dicoding standards.
  • Taught MVVM, Dependency Injection, unit testing, and Jetpack Components.
Tech Stack

Technical Expertise

Android Native

Kotlin Jetpack Compose MVVM / Clean Arch Dagger Hilt / Koin Retrofit Room DB Coroutines & Flow Accessibility Services

iOS Native

Swift SwiftUI UIKit Auto Layout SwiftData Swift Charts CocoaPods Xcode Instruments

Cross-Platform & Cloud

Kotlin Multiplatform Compose Multiplatform Firebase Auth Cloud Firestore RESTful APIs JSON Parsing

AI & Productivity

AI-Assisted Engineering Prompt Engineering GitHub Copilot Cursor AI Git & GitHub Figma
Credentials

Certifications & Education

Universitas Nurul Jadid
Bachelor of Informatics Engineering (GPA: 3.84 / 4.00)
Programmer Certification
BNSP (National Agency for Professional Certification)
Android Developer Expert
Dicoding Academy
Android Java Native
Hacktiv8 Indonesia (Grade: 91.7 / 100)

Let's Build Something Great Together

Looking for a dedicated Mobile Developer (Android & iOS) to build your next app or scale your engineering team? Let's connect!

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