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Fiverr Pro
English
$
USD
I will fix shipping api integration errors, labels, rates, tracking and webhooks
Uche Cosmas
5.0
5.0
About this gig
I will fix and debug shipping api integration problems for ecommerce stores and custom apps.
If your shipping labels fail, rates are wrong, tracking is not updating, or webhooks return errors, I will find the root cause and deliver a stable fix.
What I can fix
- Shipping label api fixes
- Label pdf output issues
- Real time shipping rates api integration
- Rate calculation errors
- Rate shopping setup and fixes
- Tracking api integration and tracking sync issues
- Webhook integration problems
- Webhook signature verification failures
- Address validation issues
- Void label and refund label errors
- Api authentication issues
- Request payload mapping problems
- Response parsing errors
- 400 401 403 404 429 500 api errors
- Timeout issues
- Retry logic and stability improvements
- Logging and debugging improvements
Supported carriers and providers
- DHL
- UPS
- FedEx
- USPS
- EasyPost
- Shippo
- ShipStation
What I need to start
- Your platform and tech stack
- Carrier or provider name
- Environment, sandbox or production
- Exact error message and when it happens
- Sample request and response logs, with sensitive data removed
- Current code access method, GitHub, zip file, or server access (if needed)
Get to know Uche Cosmas
Uche Cosmas
Shipping API Fix and Automation Expert
- FromNigeria
- Member sinceFeb 2026
- Avg. response time1 hour
- Last delivery1 week
Languages
English, French, Spanish
I specialize in fixing, integrating, and automating shipping APIs including DHL, UPS, FedEx, and USPS. If you're facing issues with shipping labels, tracking APIs, webhook errors, or rate calculations, I provide fast and reliable solutions. I help eCommerce businesses streamline their shipping workflows with efficient API automation and bug fixes. Whether it's setup, troubleshooting, or full integration, I ensure your shipping system works smoothly and efficiently. Let’s get your shipping process running perfectly.
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Other Software Development Services I Offer
FAQ
Which carriers and shipping providers do you support
DHL, UPS, FedEx, USPS, plus EasyPost, Shippo, and ShipStation depending on your setup.
What shipping API issues can you fix
Label creation, shipping rates, tracking sync, webhook errors, auth issues, payload mapping, and 400 401 403 404 429 500 errors.
What do you need from me to start debugging
Your platform and tech stack, provider, sandbox or production, exact error message, and sample request response logs with sensitive data removed.
Do you work with ecommerce platforms like Shopify and WooCommerce
Yes, I can work with Shopify apps, WooCommerce, and custom stores, as long as I can access the relevant code or API layer.
How do you deliver and how fast
I start with bug investigation, apply the fix, test labels rates tracking webhooks, then share source code and fix documentation. Delivery depends on package.
Reviews
1 reviews for this Gig
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| (0) | ||
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M 
moxion
Repeat Client
United States
Great work! Very efficient and knowledgeable. Thanks for your prompt work and great service.
Up to $50
Price
4 days
Duration
Helpful?
Reviews
1 reviews for this Gig
| (1) | ||
| (0) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
Most relevant
M moxion
Repeat Client
United States
Great work! Very efficient and knowledgeable. Thanks for your prompt work and great service.
Up to $50
Price
4 days
Duration
Helpful?
