Senior Full-Stack Developer (React/Node.js) with Shopify Experience

About the Position

We are looking for a Senior Full-Stack Developer (React/Node.js), who'll be responsible for building Shopify custom apps, integrations with other services and guide business stakeholders on the most efficient ways to solve their problems with Shopify. The successful candidate will work independently, prioritize 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

Support for a series of Shopify+ stores, mostly focused on shopify apps development, various integrations and functionality enhancements.

Responsibilities

• Develop new and maintain existing Shopify custom apps.
• Develop and support full-stack applications on nodejs, React and Vue.js.
• 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.
• 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 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.
• 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).