WordPress Plugin:
Interactive eSIM Import.
A client needed a solution to automatically import eSIM packages from an external provider into their WordPress store, display them interactively, and sell them directly. We built a custom plugin that covers the entire process, from API import to automated delivery after purchase.
400+
Work Hours
Development & Testing
15,000+
Lines of Code
Plugin, API, Frontend
4
Months
October 2025 to January 2026
2
Languages
German & English
Project Scope
What We Built
A plugin that covers the complete workflow: automated import, interactive display, checkout, and delivery. No dependency on third-party plugins, everything built as one cohesive system.
Timeline
4 Months. From Concept to Finished Plugin.
Concept & Plugin Architecture
Requirements analysis, plugin scaffold with OOP structure, API connection to the eSIM provider, database schema for product import.
Import Engine & Caching
Cron-based product sync, Redis caching for API responses, admin page with API key management and import statistics.
Storefront & Checkout
Interactive frontend with AJAX filtering by country, data volume, and duration. WooCommerce integration for the complete checkout process.
Delivery & Polish
Automated eSIM delivery via email after purchase, webhook receiver for status updates, multilingual support, testing, and bug fixing.
Technologies
The Stack Behind It
Backend
Frontend
API & Integration
Infrastructure
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