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I will fix klarna, afterpay, and bnpl payment gateway API errors
Helen Wilson
About this gig
Stop losing high-ticket holiday sales because your Buy Now, Pay Later gateways are failing at checkout!
In December, shoppers heavily rely on BNPL options like Klarna, Afterpay, and Zip. When these APIs time out, throw error codes, or fail to capture authorizations, high-value carts are abandoned instantly. Merchants lose thousands in daily revenue.
I am an e-commerce backend engineer specializing in payment gateway integrations and API debugging for Shopify and WooCommerce.
What I Fix:
- BNPL API Timeouts: Klarna and Afterpay webhook synchronization failures.
- Gateway Mismatches: Stripe or platform native BNPL authorization drop-offs.
- Checkout Script Conflicts: Apps breaking installment widget rendering.
Why Hire Me:
- Zero-Downtime Fixes: Safe, isolated deployment protecting your live traffic.
- Rapid Q4 Turnaround: Fast fixes when every hour equals lost profit.
Secure your checkout pipeline today. Message me or order now!
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Get to know Helen Wilson
Helen Wilson
Shopify Plus, WooCommerce Performance and API Specialist
- FromUnited States
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Spanish
I am a senior e-commerce backend and infrastructure engineer specializing in Shopify Plus and WooCommerce performance, checkout extensibility, and payment gateway architecture.
Standard web designers build stores; I keep high-volume stores from crashing when traffic spikes. My focus is eliminating mobile checkout friction, repairing broken wallet APIs (Apple Pay, BNPL), fixing server-side data tracking leaks, and securing international tax pipelines.
If your store is leaking revenue due to technical bugs or gateway timeouts, let's get it fixed without disrupting your live traffic.
My Portfolio
FAQ
Do you support region-specific BNPL providers?
Yes. I handle global and regional providers including Klarna, Afterpay, Zip, Clearpay, and Affirm integrated via Stripe or native platform settings.
Will this require downtime for my store?
No. All API adjustments and token re-authorizations are tested in isolation to ensure zero disruption to live customer orders.
What do you need to begin troubleshooting?
Temporary admin/collaborator access and API dashboard error logs or screenshots of the failed checkout attempt.
