I will fix dhl fedex ups usps shipping API integration, errors, and custom api

U
uchecosmas
U
uchecosmas
Uche Cosmas
5.0
5.0
fix dhl fedex ups usps shipping API integration, errors, and custom api
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fix dhl fedex ups usps shipping API integration, errors, and custom api

About this gig

Is your website, store, or business system not working properly with your shipping, payment, CRM, or third-party services?


You may be dealing with an API or integration problem without even knowing it.

Common issues include:

  • Shipping rates showing incorrectly or falling back to flat rates
  • USPS, UPS, FedEx, DHL or other carrier APIs not returning rates
  • Orders, payments, invoices or customer data not syncing
  • Webhooks failing or automations not triggering
  • Shopify, WooCommerce or custom systems not communicating with external services
  • API authentication, credentials, permissions or endpoint errors
  • Duplicate, missing or delayed data between connected platforms
  • Custom API integrations that work sometimes but fail unexpectedly


I'll diagnose where the connection is breaking, identify the actual cause, and fix or properly configure the integration so your systems communicate reliably.


If something should be connected but isnt working, message me with the issue and I'll help you find the problem.

  • Expertise

    • Algorithms & Data structures
    • Debugging
    • Performance
    • Security
    • Databases

  • Programming language

    • Python

  • Frontend framework

    • AngularJS
    • Next.js
    • React.js
    • Semantic-UI
    • Tailwind CSS

  • Backend framework

    • Django
    • Laravel
    • Express.js
    • Next.js
    • Node.js

Get to know Uche Cosmas

Uche Cosmas

Shipping API Fix and Automation Expert

5.0(2)
  • FromNigeria
  • Member sinceFeb 2026
  • Avg. response time1 hour
  • Last delivery4 months

  • 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.

My Portfolio

Other Software Development Services I Offer

Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • M
    image-docs

    moxion

    US

    United States

    Ongoing collaboration
    5

    Great work! Wend above and beyond. Great communication and promptness. Will use again.

    $100-$200

    Price

    3 days

    Duration

    Helpful?
    Yes
    No
Reviews

1 reviews for this Gig
5.0

(1)
(0)
(0)
(0)
(0)
Rating Breakdown
  • Seller communication level
    5
  • Quality of delivery
    5
  • Value of delivery
    5
Sort By
Most relevant
  • M
    image-docs

    moxion

    US

    United States

    Ongoing collaboration
    5

    Great work! Wend above and beyond. Great communication and promptness. Will use again.

    $100-$200

    Price

    3 days

    Duration

    Helpful?
    Yes
    No

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