Shopify Developer Needed – Build Custom Carrier Service App for LTL FreightFreelanceJobs • Canada
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Shopify Developer Needed – Build Custom Carrier Service App for LTL Freight
FreelanceJobs
- Canada
- Canada
Über
I need an experienced Shopify developer to build a custom Carrier Service app that:
Connects to Freightcom's API
Retrieves real-time LTL shipping rates
Returns those rates to Shopify checkout using Carrier Calculated Shipping
Optionally adds a configurable markup percentage or flat handling fee
Allows returning either:
Cheapest rate only, OR
Top 2–3 rate options
Project Scope:
Create private Shopify app
Host middleware (Heroku, Render, or similar)
Connect to Freightcom API
Handle residential vs commercial logic
Handle liftgate option logic
Return rates in Shopify-required JSON format
Basic admin configuration (markup % field preferred)
Store Details:
Canada-based
Ships Canada only
All products are pallet-sized freight
No parcel logic needed
No international shipping
Requirements:
Proven experience building Shopify Carrier Service apps
Experience with third-party shipping APIs
Ability to deploy and document setup
Clear communication
Please include:
Examples of similar shipping integrations you've built
Estimated timeline
Estimated fixed cost
Hosting recommendation
This is a one-time project with potential future optimization work.
Contract duration of 1 to 3 months.
Mandatory skills: Shopify, API, Shopify Apps, API Integration, Web Development, App Development
Sprachkenntnisse
- English
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