Payment Gateway Integration

I will integrate Paystack, Flutterwave, Stripe or Nomba payments into your app

Jedidiah GabrielProduct engineer · Kaduna, Nigeria · Replies within 24 hours

Payment Gateway Integration flyer: Get paid without the back-and-forth.

About this gig

A payment that goes through but never updates the order is worse than a failed one. Someone has to find it by hand.

I integrate payment gateways properly: checkout, verified webhooks with retries, receipts, subscriptions, split payments and refunds. I work with Paystack, Flutterwave, Stripe, Nomba and Lemon Squeezy, and I fix existing integrations that drop payments.

What you get:

Checkout on your website or app, web or mobile
Server-side verification and signed webhooks with retries
Email receipts and an admin payments log
Subscriptions with failed-payment handling
Split payments and subaccounts for marketplaces
Refunds and reconciliation exports

Stripe, Lemon Squeezy, Paystack and Nomba are all integrated and tested in WeSelling, my multi-tenant business platform, alongside stablecoin settlement on Starknet.

Tell me your stack, your gateway and what customers are paying for.

Use cases

Store checkout

Cards, bank transfer and USSD with instant order confirmation.

Subscriptions

Monthly or yearly plans with retries and dunning emails.

Marketplace payouts

Split payments and subaccounts for vendors.

School fees

Fee invoices with part payments and receipts.

Event tickets and donations

Tickets, giving and pledges with receipts.

Mobile apps

In-app payments in React Native.

Fixing broken webhooks

Payments that go through but never update the order.

Multi-currency

Naira, dollars and pounds routed to the right gateway.

What changes

Today

Customers send transfer screenshots and someone checks them by hand
Payments succeed but orders don't update, because webhooks fail silently
Subscriptions renew with no receipt and no follow-up when a card fails
You need naira and dollars, and your checkout only handles one

After

A checkout that confirms payment instantly and updates the order
Verified webhooks with retries, so no payment goes unrecorded
Subscriptions, split payments and refunds handled in code
The right gateway for each customer's currency

How it works

01Customer checks out
02Gateway processes payment
03Webhook verified
04Order marked paid
05Receipt sent

Compare packages

Package	Starter$130	Business$340	Scale$780
What it is	One gateway, one-time payments, verified webhooks and receipts	Up to 2 gateways, subscriptions, split payments, refunds and a payments log	Gateway routing, marketplace payouts, reconciliation report and a USDC option
Gateways	1	Up to 2	Up to 4
One-time payments	✓	✓	✓
Verified webhooks with retries	✓	✓	✓
Email receipts	✓	✓	✓
Subscriptions	–	✓	✓
Split payments and subaccounts	–	✓	✓
Refunds	–	✓	✓
Payments log for admins	–	✓	✓
Marketplace payouts	–	–	✓
Reconciliation report	–	–	✓
USDC option	–	–	✓
Delivery	3 days	6 days	12 days
Revisions	2	3	4

Add-ons

Faster delivery+30% of the package
USDC / stablecoin payment option+$180
30 days of support after delivery+$90

Built before

WeSellingMy own business operating system: storefront, inventory, HR, geofenced attendance, card and stablecoin payments.weselling.store

Who it's for

Online stores
SaaS products
Schools and event organizers
Marketplaces
Churches and NGOs

What I'll need from you

Your stack (Next.js, Laravel, WordPress, React Native, etc.) and repository access
Your gateway account with test keys
What customers pay for: products, subscriptions, fees
Where payment confirmations should go

Questions, answered

Which gateway should I use?

Paystack and Flutterwave suit naira, African cards and bank transfers. Stripe suits customers in the U.S., UK and Europe. Nomba suits businesses that also take in-person payments. I'll recommend based on where your customers are.

Can you fix an integration that's already live?

Yes. Missing or unverified webhooks are the most common fault I fix: the payment goes through and the order never updates.

Who owns the code and accounts when we finish?

You do. Code goes to your repository, and services run on accounts in your name, so you are never locked to me. I hand over logins, keys and a short guide.

How do I pay, and can we work outside Fiverr?

Order on Fiverr if you prefer its protection. For direct work I invoice in USD and accept bank transfer, card through Paystack or Stripe, and USDC.

The thinking behind it

Get Paid in Dollars with a Stablecoin CheckoutInternational customers struggle to pay African businesses, and cards and wires eat the margin. How a USDC checkout sits next to Paystack, Flutterwave and Stripe, confirms payment on-chain and keeps clean records.Modern Fashion Websites: Commerce Meets InnovationEmpower your clothing brand with a fast, fluid, and crypto-ready website. A modern online experience that connects with your audience and accepts payments across all frontiers.