Advanced Shopify Developer | Custom Liquid, API Integration & Theme Expert
Worldwide
We are looking for an experienced Shopify Developer with deep expertise in custom Liquid coding, API integrations, and advanced theme architecture to join our long-term project. Our platform goes far beyond basic Shopify setup — we need a developer who understands Shopify Plus-level logic, headless architecture, and multi-system integrations. You will work on optimizing performance, building scalable custom features, and ensuring seamless connectivity between Shopify and third-party services. 🔧 Key Responsibilities: Develop, optimize, and maintain custom Shopify themes using Liquid, HTML, CSS, JavaScript (ES6+). Build and integrate custom private or public apps using Shopify Admin API, Storefront API, and GraphQL. Connect external platforms like Printify, Printful, VistaPrint, and custom POD systems via API. Implement dynamic product logic — variant-based pricing, custom checkout workflows, conditional shipping, etc. Handle advanced metafield management, data syncing, and order automation. Troubleshoot Liquid errors, optimize theme speed, and ensure cross-device compatibility. Collaborate on headless Shopify or Hydrogen/Next.js-based frontends (optional but preferred). 🧠 Required Skills: 5+ years of hands-on Shopify development experience Expert in Liquid, Shopify API, AJAX, JSON, REST, GraphQL Proficiency in JavaScript (ES6+), jQuery, HTML5, CSS3, Tailwind or Bootstrap Experience with Shopify Flow, webhooks, and custom app development Knowledge of headless Shopify setup (optional but a plus) Familiarity with version control (Git) and API authentication (OAuth, tokens)
- More than 30 hrs/weekHourly
- 6+ monthsDuration
- ExpertExperience Level
$20.00
-
$30.00
Hourly- Remote Job
- Ongoing projectProject Type
Skills and Expertise
Activity on this job
- Proposals:50+
- Last viewed by client:43 minutes ago
- Hires:1
- Interviewing:13
- Invites sent:16
- Unanswered invites:1
About the client
- CanadaMontreal3:49 PM
- $427K total spent93 hires, 5 active
- 16,335 hours
Explore similar jobs on Upwork
How it works
Create your free profileHighlight your skills and experience, show your portfolio, and set your ideal pay rate.
Work the way you wantApply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
Get paid securelyFrom contract to payment, we help you work safely and get paid securely.
About Upwork
- 4.9/5(Average rating of clients by professionals)
- G2 2021#1 freelance platform
- 49,000+Signed contract every week
- $2.3BFreelancers earned on Upwork in 2020
Find the best freelance jobs
Growing your career is as easy as creating a free profile and finding work like this that fits your skills.
Trusted by