Senior Shopify Developer

About the Position

We are looking for a senior Shopify developer to take ownership of the technical maintenance and development of several Shopify stores. The role covers theme support, app support and custom app development, and integrations maintained through PHP-based middleware. The successful candidate will work independently, prioritize their own workload across multiple stores, communicate directly with stakeholders, and be accountable for the stability and performance of the entire Shopify ecosystem without requiring day-to-day supervision.

About the Project

Creating, updating and maintaining new websites for the different products of the company

Responsibilities

• Maintain, debug, and extend Liquid themes across multiple Shopify stores, including sections, blocks, templates, and theme settings.
• Support and develop interactive components built with Vue.js that are embedded into Liquid pages
• Develop new and maintain existing Shopify custom apps
• Maintain existing PHP middleware services that handle data exchange between Shopify and third-party systems
• Diagnose and resolve issues across the full stack — from frontend rendering bugs in Liquid/Vue to webhook delivery failures and middleware errors.
• Plan, estimate, and deliver new features end-to-end: from clarifying requirements with stakeholders, through implementation, testing, and deployment.
• Maintain technical documentation for themes, custom apps, and middleware so that knowledge is not locked in one person's head.

Requirements

• 4+ years of hands-on Shopify development experience, including multiple production stores.
• Deep knowledge of Liquid: objects, tags, filters, sections/blocks architecture, Online Store 2.0, theme settings and metafields/metaobjects.
• Strong understanding of the Shopify storefront — cart, checkout customization options (including Checkout Extensibility on Plus), product/collection/customer/order data models.
• Practical experience with Shopify Admin API (REST and GraphQL), Storefront API, webhooks, app authentication (OAuth), and App Bridge.
• Experience building Shopify apps (embedded admin apps, custom storefront apps, or theme app extensions).
• Familiarity with Shopify Functions, Scripts, and Shopify Flow.
• Solid JavaScript (ES6+), HTML5, CSS3 fundamentals.
• Working experience with Vue.js (Vue 2 and/or Vue 3) — components, reactivity, lifecycle, props/events, and bundling.
• Comfortable injecting and bootstrapping Vue applications inside Liquid-rendered pages, handling Shopify's AJAX cart events, and avoiding conflicts with theme JavaScript.
• Experience with build tooling (Vite, Webpack, or similar) and package managers (npm/yarn).
• Comfortable maintaining legacy PHP code: reading unfamiliar codebases, refactoring carefully, and adding tests where they are missing.
• Strong understanding of REST APIs, webhooks, queues, retries, idempotency, and error handling in integration scenarios.
• Working knowledge of MySQL/PostgreSQL, including writing and optimizing queries.
• Confident with Git in a team setting: branching strategies, code review, resolving conflicts.
• Able to debug across system boundaries — distinguishing whether an issue lives in the theme, an app, the middleware, or the third-party service.
• Comfortable working without close supervision: breaking down vague requests, identifying risks, escalating only what genuinely needs escalating.
• Clear written communication in English (or the working language of the team), sufficient to document decisions and discuss tradeoffs with non-technical stakeholders.

Nice to Have

• Headless Shopify experience (Hydrogen, custom storefronts via Storefront API).
• Experience with TypeScript.
• Experience with CI/CD pipelines (GitHub Actions, GitLab CI).
• Background in e-commerce performance optimization (Core Web Vitals, Lighthouse, image and script delivery).