Isaac Toh

Led design, development and migration of back-end services and RESTful APIs using Laravel 8.x and Yii2, supporting complex order management, checkout flows, and admin tooling. Built and maintained APIs powering Vue.js and React frontends; integrated Stripe and PayPal payments, webhooks, refunds, and reconciliation. Improved backend performance and scalability by profiling PHP, optimizing MySQL queries, and introducing Redis caching. Implemented asynchronous background jobs and queue workers for payment processing, notifications, order synchronization, and reporting. Collaborated with product managers, ops, and QA; mentored engineers; delivered production releases and hotfixes. Refactored legacy PHP code to modern standards, improving reliability and maintainability.

Developed and enhanced e-commerce and content-driven platforms by building backend services in Laravel and Yii2, supporting order processing, user management, and checkout workflows. Implemented RESTful services, multi-tenant SaaS support, and production monitoring to improve reliability and performance.

Built and maintained B2B/B2C e-commerce and content-driven platforms using Laravel (8.x) and Vue.js, supporting order processing, user management, checkout flows, and admin tooling. Implemented RESTful services, integrated Stripe and PayPal payments, and ensured reliable transaction records and reconciliation. Optimized application performance, migrated legacy PHP code, and introduced backend patterns with emphasis on security and scalable architecture.