I am looking for an experienced PHP developer to build a fully working demo that demonstrates how to integrate and use the Airalo API / SDK in PHP. This project requires a real, functional implementation, not sample code or mocked responses. Scope of Work The freelancer must implement and demonstrate all available Airalo services using PHP, including but not limited to: Retrieve account balance Fetch countries list Fetch available eSIM plans Retrieve plan details Purchase eSIM Check eSIM status Retrieve eSIM data usage / consumption Any additional endpoints provided by Airalo Deliverables A working PHP demo application (CLI or web-based) Clean, well-structured, documented PHP code Clear instructions for: Environment setup API authentication Running and testing each endpoint Optional but preferred: Simple web UI for testing Postman collection .env configuration support Technical Requirements PHP 8+ Use official Airalo API / SDK Secure handling of API credentials (no hardcoding) Proper error handling and logging Reusable, production-ready code Freelancer Requirements Strong experience with PHP API integrations Experience with telecom or eSIM APIs is a plus Ability to provide live demo results Clear communication and documentation Important Notes This is not a design or UI project Mock data or screenshots are not acceptable The demo must work end-to-end How to Apply Please include: Relevant PHP projects Similar API integrations you’ve completed Estimated delivery timeline