Shopify App Developer (Freelancer/Part Time)

Role Overview

We’re seeking a seasoned Shopify developer to architect, build and maintain a custom Shopify App (and theme integrations) that powers best-in-class search, facets, autosuggest and AI-driven product recommendations. You’ll work closely with our backend team (GraphQL + AI models) to deliver a pluggable solution merchants can install into any Shopify theme.

Key Responsibilities

• App & Theme Development:

• Build a Shopify App (OAuth, webhooks, App Proxy, ScriptTags) to inject custom storefront widgets
• Extend or override Liquid templates (PLP/PDP, collection.liquid, product.liquid) with dynamic data hooks

• Search & Facets Integration:

• Integrate with search engines (Algolia, Elasticsearch, Typesense or custom Saastify GraphQL) for product indexing, typo tolerance, synonyms, and relevance tuning
• Implement multi-facet navigation (category, price ranges, brands, tags) with server- or client-side filtering

• Autosuggest & Recommendations:

• Develop a responsive autosuggest UI with debounced input, keyboard navigation, and recent/popular search suggestions
• Consume AI/ML endpoints to surface “You may also like” and personalized product recommendations on PLP and PDP

• Performance & Reliability:

• Optimize GraphQL queries, implement caching (CDN/edge), and handle error-fallbacks to ensure snappy storefront performance
• Write unit and end-to-end tests (e.g., Jest, Cypress/Playwright) for critical flows (OAuth install, search, widgets)

• Collaboration & Best Practices:

• Work alongside backend engineers to define GraphQL schemas, batch loading, and data contracts
• Follow Shopify’s Polaris and App Bridge guidelines for any embedded merchant UI
• Maintain code quality via Git workflows, CI/CD pipelines, and code reviews

Required Qualifications

• Shopify Expertise:

• 3+ years building Shopify themes & apps using Liquid, Shopify CLI/Theme Kit, ScriptTags and App Proxy
• Deep familiarity with Storefront & Admin APIs (GraphQL/REST) and Shopify’s OAuth & webhook frameworks

• Front-End Skills:

• Strong JavaScript/TypeScript (ES6+); experience with React (Polaris/App Bridge) or vanilla JS for UI widgets
• Solid HTML5, CSS3 (SCSS/PostCSS) and adherence to accessibility standards

• Backend & API Integration:

• Proficiency in Node.js/Express (preferred) or Python (Flask/Django) for app server development
• Designing and consuming GraphQL queries/mutations, handling pagination, batching, and error-handling

• Search & AI Integration:

• Hands-on experience with a search platform (Algolia, Elasticsearch, Typesense, MeiliSearch)
• Comfortable calling external AI/ML endpoints, handling JSON payloads and implementing caching strategies

• DevOps & Testing:

• Familiarity with CI/CD (GitHub Actions, GitLab CI, CircleCI) and deploying to AWS/GCP/Heroku or serverless environments
• Writing unit/integration tests with Jest, Mocha or equivalent and E2E tests with Cypress/Playwright

Preferred Skills

• Experience with

  Shopify Hydrogen

  or other headless commerce frameworks
• Knowledge of

  edge computing/CDN

  strategies (Cloudflare Workers, Fastly)
• Familiarity with

  Docker

  and containerized deployments
• E-commerce domain understanding: collections, smart collections, metafields, SEO best practices
• Contributions to open-source Shopify tools or community plugins

How to Apply

Please share your CV, GitHub/portfolio links, and a brief note on:

1. An example of a Shopify App or theme customization you built (incl. search/facet work)
2. Any AI/ML integrations you’ve implemented in an e-commerce context

hr@saastify.ai

• Shopify App Developer – [Your Name]