Engineering
Payment Gateway Integration
We integrate secure, compliant payment flows into your product, across regional and global gateways, with the reconciliation and edge cases handled.
AVMDEVS integrates payment gateways into websites and apps: cards, wallets, subscriptions and the local Gulf payment rails your customers already expect, built to fail safely and reconcile cleanly with your books.
Payments are one of the few parts of a product where a bug does not just annoy a user, it costs you a sale or an argument with a bank. We test failure paths deliberately: declined cards, double-clicks, dropped connections, refunds and chargebacks, because those are exactly the scenarios that get skipped in a rushed integration and then show up in production.
The heavy compliance burden of handling card data belongs with the gateway, not with you, and part of our job is designing the integration so it stays there. You get a checkout that behaves like it deserves a card number and settlement reports that actually match your accounting.
Why it is worth doing
What this changes for your business
Outcome 01
Get paid without leaks
Fewer failed payments and fewer abandoned checkouts, because the failure paths were tested before customers found them.
Outcome 02
Trust at the moment of truth
A checkout that looks and behaves like it deserves a card number, at the exact moment a customer is deciding whether to trust you with one.
Outcome 03
Books that reconcile
Settlements, refunds and fees that match your accounting without a monthly hunt through gateway statements.
Outcome 04
Local rails included
The payment methods Gulf customers actually use, wired in from the start instead of added as an afterthought.
Scope
What you get
Fixed, written into the proposal, and the same list you will see on the invoice. Anything outside it gets quoted before it gets built.
- 01
Gateway integration
Regional and global providers wired in cleanly.
- 02
Secure and compliant
PCI-aware handling of sensitive data.
- 03
Subscriptions and refunds
The full lifecycle, not just one-off charges.
- 04
Reconciliation
Payments that always match your records.
Method
How we work
The real process behind payment gateway integration, step by step, in the team's own words.
Step 01
Flow and gateway selection
We map your money flows, cards, wallets, subscriptions, refunds, then recommend gateways that fit your market, including the local Gulf rails your customers actually reach for.
Step 02
Compliance scoping
We establish exactly what PCI DSS requires for your setup and design the integration so the heavy compliance burden stays with the gateway, not with you.
Step 03
Integration build
Tokenized payments, 3-D Secure, webhooks and receipts get built into your site or app and tested end to end in sandbox before anything touches real money.
Step 04
Failure-path testing
Declines, retries, double-clicks, refunds, chargebacks and dropped connections are all tested deliberately, because payments fail in production in exactly the ways nobody bothered to test.
Step 05
Go-live and reconciliation
We launch with monitoring in place, then build reconciliation reporting so what the gateway settles always matches what your books expect.
Proof
Related work
Real projects from the AVMDEVS archive in this discipline. Open any of them for the brief, the build and the screens.
Answers
Payment Gateway Integration questions
The things clients ask before they sign. If yours is not here, ask us directly.
What is a payment gateway and how does it work?
A payment gateway is the service that securely takes a customer's card or wallet details, sends the request to the bank or scheme for approval, and returns a result, approved or declined, back to your checkout. It is the layer that lets you accept payments without ever touching raw card data yourself.
Which payment gateway is best for UAE and KSA businesses?
There is no single right answer: it depends on your transaction mix, your settlement currency needs and which local rails your customers expect. We have integrated Stripe, N-Genius and Razorpay, alongside Tabby and Tamara for buy-now-pay-later, and will recommend based on your actual flows rather than a single vendor relationship.
How much does payment gateway integration cost?
Cost depends on how many payment methods you need, whether subscriptions or partial payments are involved, and how much of your existing checkout has to change. We scope it against your actual flows and you get a quote within one business day.
How long does integration take?
A standard integration with cards and one or two local rails typically takes 3 to 5 weeks including sandbox testing. Adding subscriptions, multi-currency or several wallet options extends that timeline.
Do we need PCI compliance, and will you handle it?
Most merchants stay in the lowest PCI compliance tier by never touching raw card data directly, which is exactly how we design the integration. The gateway carries the heavy compliance burden; you complete a short self-assessment. We will tell you precisely what falls on your side.
Can you add subscriptions, refunds and partial payments?
Yes. Recurring billing, partial refunds and split or partial payments are standard parts of an integration, built and tested the same way as the core checkout, not added on as a rushed extra.
Can you fix a payment flow that keeps failing or losing orders?
Yes. We audit the existing integration first, cards that fail silently, webhooks that drop, reconciliation that does not match, then fix what is broken rather than rebuilding what already works.
Delivered in the Gulf
Customers across the UAE and Saudi Arabia increasingly expect buy-now-pay-later options like Tabby and Tamara alongside standard card rails, and we have integrated both. Checkout flows we build also account for VAT-aware receipts and settlement reporting that matches what a Gulf-based accounting team expects to reconcile against.
Where
Delivered from four desks
United States
Sherman Oaks
Lebanon
Beirut
UAE
Dubai
KSA
Jeddah
AVMDEVS is a US-registered LLC and has been shipping since 2011, more than 400 projects to date. Whichever desk you start from, you work with one team and one point of accountability.
Next
Works well with
Most engagements combine two or three of these. They are built by the same team, so nothing has to be integrated after the fact.
- Backend DevelopmentWe build the APIs, services, and data models your product runs on, with security, observability, and scale designed in from the start..
- POS & Retail System DevelopmentWe build point-of-sale and retail systems around how your business actually operates, from the counter to inventory to reporting..
- Website DevelopmentWe design and build custom websites and web apps that load fast, rank well, and convert.
Ready when you are.
Tell us where you are with payment gateway integration. You will talk to the people who will actually do the work, not a sales layer, and you will get a straight answer on scope and timeline.