Connect your systems, take payments safely.
Payments and integrations are the part of a build where "mostly works" isn't good enough — a double charge or a lost webhook is a real customer and real money. I integrate the gateways (Stripe, PayPal, Razorpay and more) and connect your systems to each other, built idempotent and reconciled, the same way the money flows in my live booking platform. Remote, worldwide.
Money and data moving between systems, reliably.
Integrations are judged on the failure cases — the timeout, the retry, the disagreement between two systems. Here's the integration work I build, with those cases handled, not hoped away.
Payment gateway integration
Stripe, PayPal, Razorpay and others — checkout, saved cards, subscriptions and payouts, wired to the same money logic I run in production.
Webhooks & async events
Reliable webhook handling with signature checks, retries and deduplication — so a delayed or repeated event never double-charges or loses an order.
Refunds & reconciliation
Refunds, partial refunds and reconciliation against gateway settlements — so your books and the gateway actually agree.
Third-party API integration
Connecting your app to ERPs, CRMs, accounting, shipping and supplier feeds — REST, SOAP or GraphQL, kept in sync reliably.
Booking & GDS integrations
Supplier and GDS connections for travel and booking platforms — the deep integration work I do every day. See travel work →
Idempotent & auditable
Every money operation idempotent and logged, so a retry is safe and there's always an audit trail when someone asks "what happened to this payment?"
What every integration includes
An integration is trustworthy when it survives the network being flaky and the other system being down. Every build ships with that built in.
- Gateway or API integration, end to end
- Signed, verified webhook handling
- Idempotency so retries never double-act
- Refunds & reconciliation where money moves
- Retries, timeouts & graceful failure
- Full audit trail of every transaction
- Sandbox testing before anything goes live
- Clear error handling your team can read
I run money in production, not just tutorials
My live multi-GDS platform takes payments, applies markup, moves money between agent wallets and issues refunds — every day. Integration and payment reliability isn't theory for me; it's what I already operate.
- Real payment & booking money flows in production
- Idempotency and reconciliation done by habit
- Integrations behind a clean adapter, not tangled in
- Built so a provider can be swapped later
- Honest scope and a clear quote up front
- You own all the code — no lock-in
From two disconnected systems to a reliable link, in five steps.
Map
What has to move between the systems, in which direction, and what happens when they disagree. We agree the scope and the edge cases up front.
Design
The integration contract, the idempotency and retry strategy, and the reconciliation approach — decided before code.
Build
The integration built behind a clean adapter, with webhooks, retries and logging, tested against the provider's sandbox.
Break it
Timeouts, duplicate events, partial failures and refunds — the money paths tested deliberately, not discovered in production.
Go live & support
Switch to live keys carefully, watch the first real transactions, and stay on to add providers or flows. See support options →
The systems behind the integration.
Related services and write-ups that show how I approach integration and money flows in real platforms.
Backend & API development
The server-side layer every integration lives in — auth, jobs and reliability, built for correctness under load.
Booking engine development
A whole platform of payments and supplier integrations — the production system this reliability comes from.
Integrating multiple providers
How one system talks to many external providers at once — normalisation, failover, price drift and refunds.
Need payments or systems connected?
Tell me which gateway or systems you need integrated — a rough idea is enough. You'll get an honest scope and a clear quote, with no pressure.