Full Stack Engineer

**About the Company:** Our client is a U.S.\-based leader in personal safety and affordable wireless services. They provide innovative GPS tracking devices and telecom solutions designed to protect loved ones, vehicles, and assets. **Job Description:** We are seeking a highly skilled Full Stack Developer with a strong emphasis on back\-end development, particularly specializing in e\-commerce payment systems, tokenization, and analytics tracking. The ideal candidate will possess deep expertise in both front\-end and back\-end development, with extensive, hands\-on experience across Shopify and WordPress/WooCommerce platforms, coupled with advanced API integration capabilities. **Required Experience and Qualifications:** • MANDATORY: Proven at least 5 years of experience in Full Stack Development, with a strong back\-end focus. • MANDATORY: Extensive hands\-on experience with both Shopify and WordPress/WooCommerce (front\-end and back\-end). • Expert\-level experience in building custom checkout and shopping cart functionality within both WordPress/WooCommerce and Shopify environments. • Deep expertise in payment gateway integration (Stripe, Apple Pay, Google Pay, Amazon Pay) and advanced API integration. • Proficiency in HTML, CSS, JavaScript (ES6\+), and modern front\-end frameworks such as React, Angular, or Vue.js. • Strong experience with server\-side languages, particularly PHP and Node.js. • Familiarity with database management (SQL and NoSQL). • Solid understanding of web performance optimization and security best practices. **Responsibilities:** • Design and develop robust, secure, and user\-friendly interfaces using HTML, CSS, and JavaScript. • Build interactive, responsive web pages and applications focused on optimal UI/UX, including custom styling of checkout fields and user\-friendly error feedback. • Develop complex server\-side logic and APIs, crucial for handling sensitive financial data and integrating third\-party payment services such as Stripe, Apple Pay, Google Pay, and Amazon Pay. • Manage databases, ensuring efficient, secure, and compliant data storage and retrieval, especially for payment tokens. • Optimize applications for exceptional performance, scalability, and security, with a strong focus on payment system reliability. • Implement advanced features and customizations on Shopify and WordPress/WooCommerce platforms. • Lead complex integrations with external systems (e.g., CRMs) via APIs, ensuring secure transmission and management of payment tokens and sensitive information. • Develop custom PHP functions, utilize hooks and filters for payment gateways, and engage in custom plugin development or enhancement for WooCommerce. • Work with Shopify Admin API and Storefront API for payment app integration, custom code, templates, and webhooks for order and payment events. • Implement and manage analytics tracking using Google Analytics/GA4 and Google Tag Manager (GTM). **Preferred Skills:** • Experience with cloud platforms (AWS, Azure, Google Cloud), particularly for deploying and managing high\-performance web applications. • Familiarity with CI/CD pipelines and agile development environments. • Exceptional analytical, problem\-solving, and debugging abilities. **Software \& Tools:** • Experience with Browser DevTools, WooCommerce logs, and Shopify logs. • Familiarity with analytics tools such as Google Analytics and Google Tag Manager. **Schedule:** 9 – 5 PST, Monday to Friday **Compensation \& Benefits:** Payment in USD or local currency according to candidate’s preference.