Shopify Plus Developer

MSP OPERATIONAL CORP•Montreal, QC

1d•CA$100,000 - CA$120,000

About The Position

As we re-platform and scale our digital experience, we’re building out our enterprise eCommerce capability. Reporting to the eCommerce Digital Director, the Shopify Plus Developer owns the technical build from a full theme rebuild to custom apps, checkout extensibility, and deep platform integrations. You’ll work hands-on across the full stack and collaborate closely with our brand, marketing, and agency partners to bring an ambitious roadmap to life. SEO and content strategy are owned in-house; this role owns the implementation that makes them perform.

Requirements

Proven full-stack development experience in enterprise eCommerce environments.
Custom Shopify app development (Node.js, React,GraphQL).
Shopify Admin API, Storefront API, and webhook management.
REST andGraphQLAPI fluency, with backend logic and event-driven architecture.
Shopify Plus depth: Checkout Extensibility, Checkout UI Extensions, and Shopify Functions (discounts, shipping, payment logic).
Customer Accounts Extensibility framework and UI Extensions.
Frontend Shopify fluency: Liquid, HTML/CSS/JS, theme sections, and Figma-to-code.
Integration experience with email/SMS (Klaviyo) and reviews/loyalty platforms (Yotpo,LoyaltyLion).
Product data management withmetafieldsand metaobjects.
CI/CD pipelines, Git branching strategy, and deployment workflows.
High-traffic performance handling and Core Web Vitals ownership.

Nice To Haves

Shopify Flow automation, Launchpad, and multi-store management.
ERP/OMS integration experience, ideally NetSuite.
Subscription & bundle platform experience, ideallySkio.
Experience coordinating with design freelancers and external agency partners.
Bilingual (French/English).

Responsibilities

Build and maintain custom Shopify functionality across the full stack — themes, custom apps, and platform extensions.
Lead the Shopify Horizon theme rebuild with a mobile-first, performance-first approach.
Develop on Shopify Plus surfaces: Checkout Extensibility, Checkout UI Extensions, Shopify Functions, and Customer Accounts Extensibility.
Implement and maintain integrations with our core stack —Skio,Loyalty Lion,Yotpo, Georgias and Klaviyo.
Own product data architecture through meta fields and metaobjects.
Ensure the store performs under high-traffic events such as drops, flash sales, and promotional peaks.
Own enterprise-level Core Web Vitals and site performance.
Maintain healthy delivery practices: CI/CD pipelines, Shopify GitHub integration, Git branching, QA, and testing.
Participate in agile sprints with cross-functional teams, including brand, marketing, and agency partners.