Checkout and order state
We define order creation, payment initiation, cancellation and expiry. Pending payment remains distinct from a confirmed order.
Connect checkout to what happens after the payment.
Payment flows that connect orders, provider events and your team’s reconciliation work, including delayed confirmations, refunds and failed attempts.
No pressure, no hard sell.
A successful browser redirect is only one part of a payment journey. We connect provider-confirmed payment state to your application rules and give staff a way to investigate when the two disagree.
What we deliver
Verified provider events
Webhook verification follows the chosen provider interface. Duplicate and out-of-order events are handled against an explicit payment state model.
Refund and dispute workflows
Where supported by the provider and scope, staff can track refund requests and dispute events. Provider acceptance and final completion remain separate states.
Reconciliation and recovery
Transaction identifiers link local records to provider records. Delayed events and uncertain attempts have an investigation path before another charge is initiated.
Credential and environment setup
Test and live environments use separate configuration. Hosted checkout or provider tokenization keeps payment details within the provider’s supported flow.
We will agree the deliverables before implementation.
How it works
Review the provider and business model
We confirm account access, supported payment methods, currencies and the relationship between payment and fulfillment.
Agree payment state transitions
We map successful, declined, abandoned and delayed attempts, including the staff action required for unresolved cases.
Connect checkout and events
We implement the provider flow and repeat-safe event processing using the available sandbox facilities.
Prepare live operation
We document live configuration, reconciliation and refund responsibilities before the agreed release.
Weekly written updates
Technologies
- Provider SDKs
- REST APIs
- Webhooks
- Laravel
- Node.js
- FastAPI
- PostgreSQL
Provider selection depends on your account eligibility, supported markets and required operations. We assess Stripe, Razorpay, PayPal or your existing provider against those requirements rather than assuming interchangeable features.
We will explain the stack before the build.
Typical outcomes
Clear payment status
Customers and staff can distinguish a pending attempt from a confirmed transaction.
Fewer duplicate business actions
Repeated notifications do not create another fulfillment action for the same payment.
An investigation trail
Provider identifiers and local history help staff resolve payment disagreements.
We will agree concrete acceptance examples for these intended improvements.
Engagement options
A defined provider and checkout journey fit a fixed scope. Subscriptions, marketplaces, migrations and multiple providers need their own agreed boundaries.
Fixed-scope project
Defined deliverables, agreed acceptance criteria and scope changes discussed before implementation.
Dedicated monthly engineering
An evolving backlog, priorities agreed together and working increments you can review.
Hourly technical consulting
A focused question, agreed review boundaries and findings to inform your next decision.
Bring your constraints; we will recommend a starting model.
Questions before we start
Which gateways can you integrate?
We assess your selected provider’s APIs, account permissions and test environment. Share the required countries, methods and transaction model so we can confirm feasibility.
Can you add subscriptions?
Yes, where supported. Plans, trials, failed renewals, cancellation and application access need an explicit lifecycle separate from one-time checkout.
Does integration include merchant approval or certification?
Merchant onboarding and approvals remain with the provider and account owner. Any external assessment requirements must be scoped separately; application integration does not itself establish certification.
Include other constraints in your enquiry so we can review them during scoping.
Bring us the part that needs to work better.
Tell us what happens today and what you want to change. We will find a practical first step together.
Book a Free Consultation
No pressure, no hard sell.