Single-Merchant Multi-Branch E-Commerce with Integrated Inventory Management
Table of Contents
Project Overview
Multi-branch e-commerce (retail and wholesale) application in Indonesia with an integrated inventory management system.
- Role :Android Developer
- Duration : Feb 2022 - May 2022
- Tech Stack :Android , Kotlin, MVVM , Clean Arch, RxJava, Koin
User Interface Application
To see the UI, go directly to the application’s features section.
My Contribution
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API Integration: Integrating REST API endpoints for the Authentication, Catalog, Product, Cart, Order, and Transaction modules.
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Payment Gateway: Implementing Midtrans payments using consumable APIs from the backend team.
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Custom UI/UX: Developing custom UI components (such as an integrated search field, wholesale/retail stock filters, and a cart UI) to comply with the design system guidelines.
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Feature Development: Fully involved in the development of the application’s core modules (Home, Products, Cart, Payment, Orders and Profile).
Technical Implementation
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Core Architecture: 100% Kotlin with MVVM and Clean Architecture patterns.
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UI/UX & Performance: Uses XML (ConstraintLayout for complex UIs & LinearLayout for simple UIs) and Custom Views. Optimized with RecyclerView to prevent performance issues (jank).
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Local Storage: Implements Room Database for local shopping cart state management (storing Product IDs as identifiers).
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Network & Asynchronous: Utilizes Retrofit2 for network integration and RxJava/RxKotlin for reactive asynchronous process handling.
Feature Application
Disclaimer
All product names, logos, and brands are anonymized due to NDA.Auth System:
Login/Register via standard email
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Product List
Search for products using various search filters View product details, descriptions, and available stock at each store
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Cart
Enter a list of items from any store, including the quantity of each item, which can be checked out together or individually
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Order/Checkout
Checkout by selecting items already in your cart Address Selection Courier Selection based on location
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Transaction History and Current Transaction Tracking
View ongoing or completed transactions with various statuses
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Address List
Save multiple shipping addresses to calculate shipping costs and destinations.
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Payment
Select various payment methods from checkout transactions with step-by-step payment instructions.
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Conclusion
This project helps a store have its own ecosystem if people want to make purchases online and can check their stock in real time and measurably and helps buyers to see more detailed and complete products comfortably because they can do it via the application.