Job Title: Senior Full Stack Developer (Shopify, PHP, and Custom Systems)

Type: Full-time; Remote

Schedule: US Time zone

We are looking for a highly capable, hands-on Full Stack Developer with 4-6 years of professional experience. This role is for a builder who understands the "how" and "why" behind the code. We aren't looking for someone who just stitches together React libraries; we need someone who can write clean, high-performance vanilla JavaScript and handle complex backend logic. You will be responsible for building end-to-end web experiences, managing custom Shopify environments, and maintaining the infrastructure that powers them.

Key Responsibilities

• No-Framework Frontend: Develop interactive, lightweight user interfaces using Vanilla JavaScript and jQuery. You must be able to solve complex UI challenges without relying on React, Vue, or Angular.
• Custom Shopify Development: Build and maintain bespoke themes using Liquid and implement advanced logic via Shopify Functions.
• Backend & Database Management: Design and maintain SQL databases and write server-side logic in PHP.
• Infrastructure: Manage hosting and deployments on Heroku and AWS, including the configuration of Cron jobs for automated tasks.
• System Integration: Build and consume REST APIs to connect our storefront with internal and external services.

Technical Requirements

• Experience: 4–6 years in a professional full-stack role.
• Shopify Stack: Expert-level knowledge of Liquid, Shopify APIs, and the new Shopify Functions API.
• Languages: Deep proficiency in PHP, SQL, and "Plain Vanilla" JavaScript.
• DevOps: Experience managing environments on Heroku and handling database migrations/management.
• Automation: Ability to set up and troubleshoot server-side scheduled tasks (Cron).
• "Nice to Have" Skills
• Image Processing: Experience with programmatic image generation, layering, or synthesis (e.g., using GD library, ImageMagick, or Canvas).
• Complex Scripting: Experience handling heavy data processing or asset manipulation on the fly.