I will fix shipping API, tracking, rates, labels and carrier integration issues


About this gig
Is your shipping API failing, showing incorrect rates, not generating labels, or leaving tracking information stuck? I can help fix it.
I will troubleshoot and resolve shipping API, tracking, shipping rates, shipping labels, carrier integration, and automation issues so your orders can move smoothly from checkout to delivery.
I can work with UPS, FedEx, DHL and other shipping services, including API connections, authentication, webhooks, rate calculations, tracking updates, label generation, and order synchronization.
What I can fix:
- Shipping API errors
- Incorrect or missing rates
- Tracking not updating
- Shipping labels not generating
- Carrier API connection issues
- Webhook and automation failures
- Order and fulfillment synchronization
Send me your current setup, error message, carrier, and what is not working. Ill review the issue and provide the right solution.
Get to know Halli
Shipping API integration expert
- FromUnited Kingdom
- Member sinceJul 2026
- Avg. response time1 hour
Languages
English, Portuguese
Other Software Development Services I Offer
FAQ
Can you fix my existing shipping API instead of building a new one?
Yes. I can troubleshoot your existing integration and fix API errors, authentication, rates, tracking, labels, webhooks, and synchronization problems.
Can you integrate UPS, FedEx, or DHL?
Yes. I can work with UPS, FedEx, DHL, and other shipping providers depending on their available API and your requirements.
Can you fix shipping rates that are incorrect at checkout?
Yes. I can investigate rate calculations, API requests, shipping rules, zones, and carrier responses to identify and fix the problem.
What do you need from me to start?
Send your shipping provider, website/platform, current integration, error message or screenshots, and a short explanation of what is not working.

