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I will build shopify API integrations and automation workflows
Jinyu H
About this gig
Former Shopee engineer with 2 years maintaining production e-commerce systems. I build Shopify API integrations and automations.
What I Build:
Connect ERPs, warehouses and sales channels
Real-time order, inventory and fulfillment webhooks
Automate data sync across systems
Custom API endpoints and middleware
Fix sync failures, duplicates and delays
Use Cases:
Inventory sync across stores/platforms; automatic order forwarding to fulfillment centers; supplier product imports; sales exports to Google Sheets/dashboards; order notifications to external systems.
Technical Skills:
Shopify Admin API, GraphQL, Bulk Operations, Node.js, JavaScript and REST APIs. Webhook validation, rate limits, retries, error handling and production monitoring.
You'll Get:
Working code deployed and tested
Setup steps and API documentation
Test results with sample data
Revisions within the agreed scope
Before Ordering:
Describe the systems and data flow. Share API docs, test-account access, existing code/logs, and hosting details (AWS, DigitalOcean, etc.). Never share your admin password.
Third-party costs (servers, paid APIs) are separate. I'll advise on options during planning.
Get to know Jinyu H
Jinyu H
Shopify App and Integration Developer, Former Shopee Engineer
- FromChina
- Member sinceOct 2026
- Avg. response time1 hour
Languages
Chinese
Former Shopee software engineer with 2 years building and maintaining production systems. I help Shopify merchants connect orders, inventory and profit data through webhook troubleshooting, ERP and 3PL integrations, shipping APIs, and Google Sheets reporting. My stack includes JavaScript, TypeScript, React, Vue and Node.js. I trace failures through logs and data flows, define clear acceptance criteria, and deliver tested, documented code. Start with a focused diagnostic or pilot, then expand through agreed milestones.
FAQ
Do you provide server hosting?
No, server costs are separate. I can deploy to your existing server (AWS, DigitalOcean, Heroku) or recommend affordable options based on your needs.
What if I don't have API documentation?
Many systems have public API docs. If yours doesn't, I'll need test account access to explore the endpoints. We'll discuss feasibility before starting.
Can you work with custom or proprietary systems?
Yes, as long as they have an API or can send/receive webhooks. Provide any available documentation or access during the requirements phase.
What happens if the integration breaks later?
I test thoroughly and handle common failure cases (rate limits, retries, network errors). Issues within the revision period are covered. For changes to external APIs or new requirements, we can discuss maintenance separately.
Do I need to provide my Shopify admin password?
No. Use collaborator access or generate a private app token with only the permissions needed. Never share your main password.
What information do I need before ordering?
The two systems you want to connect, a brief description of the data flow (what goes where), and any existing integration code or error logs if you've tried before.
