Integrate Payment Gateway — Without Re-launching Your Site
PCI-aware checkout that converts and reconciles cleanly
Integrate Payment Gateway — done properly, by senior engineers
A payment integration looks simple in the provider's quick-start and gets hard exactly where it matters: webhooks that arrive out of order or twice, a checkout that loses customers on a declined card, refunds and disputes that never reconcile, and the PCI question of whether card data ever touches your servers. We integrate Stripe, Razorpay, PayPal — or a provider-agnostic abstraction over several — the way a production system needs it: provider-hosted elements so you stay out of PCI scope, idempotent webhook handling with retries and a durable event log, and a reconciliation view your finance team can actually trust. Every change ships as a pull request on your repo, and we test the unhappy paths (timeouts, partial failures, duplicate events) that break checkouts in the real world.
What you're seeing
You need a payment provider live in weeks with webhooks, retries, and clean reconciliation.
Our approach
We integrate Stripe, Razorpay, PayPal — or all three — with proper webhook handling, idempotency keys, and an admin reconciliation view.
Symptoms teams come to us with
- You need a provider live in weeks, not months
- Webhooks miss, double-fire or never reconcile
- Edge cases (refunds, disputes, retries) break checkout
- Worry about PCI scope and card data on your servers
What we build in
- 01Idempotent webhook handling with retries and logging
- 02Provider-hosted elements so card data never touches your server
- 03A reconciliation view your finance team can trust
- 04Clean failure, refund and dispute flows
What you get
Concrete deliverables, no fluff
Every engagement ends with measurable, documented outcomes — no black-box agency reports.
Integration with provider of your choice
Webhook handling with idempotency + retries
PCI-aware token flow, no card data on your server
Reconciliation report + admin dashboard
What changes after we ship
Idempotent, reliable webhooks
Events are de-duplicated, retried and logged, so a double-fire or out-of-order delivery can never double-charge or corrupt an order.
PCI-aware checkout
Card data flows through provider-hosted elements and never lands on your server, keeping your PCI scope as small as possible.
Clean reconciliation
A reconciliation report and admin view so finance can match payouts to orders without a spreadsheet.
The unhappy paths handled
Declines, timeouts, refunds, partial captures and disputes handled deliberately — not discovered in production.
From brief to shipped fix
A transparent, low-risk process — a senior engineer reads your brief personally, and nothing starts until you approve a written plan and price.
Diagnose
A senior engineer reviews your brief, reproduces the issue, and pinpoints the real root cause — not the symptom — before any code is touched.
Scoped plan & quote
You get a written plan to integrate Payment Gateway, a firm timeline, and a fixed quote. Nothing starts until you approve it — no surprise invoices.
Ship the fix
We implement on a branch and open a pull request you review, working to your code-review standards on your repo — never a black box.
Verify & hand off
We verify on staging and production, share before/after evidence where it applies, and leave you a short hand-off note so the fix sticks.
Situations we handle
Going live in weeks, not months
You need payments shipped to a deadline. We scope tightly and deliver a tested integration on a fixed quote.
Subscriptions and recurring billing
Trials, proration, upgrades and dunning that actually recovers failed charges — on Stripe or Razorpay Subscriptions.
Multiple providers or regions
UPI in India, cards globally, PayPal alongside — behind one clean abstraction so you can switch later without rewriting checkout.
Why teams hand this task to Krapton
Senior engineers only
Your brief is read and handled by a senior engineer — no junior hand-off, no sales-rep filter in between.
Root cause, not a patch
We reproduce and fix the underlying cause, then add a guard so the same class of issue does not quietly return.
Your repo, your standards
Every change lands as a pull request you review, on your repository, following your existing review process.
NDA on day one
Confidentiality and IP are covered before we look at a single line of code. All work stays in your accounts.
Fixed quote up front
You approve a written plan and price before work starts. If scope changes, we re-quote in writing — no surprise invoices.
Proof, where it applies
Performance, SEO and reliability work ships with before/after evidence so the result is measurable, not anecdotal.
Three ways to engage
No retainer required. Pick the model that matches the work — pricing for this task starts from $2,000, with a fixed quote before anything starts.
Per task
Most popularOne clearly-scoped fix at a fixed price. Best when you know exactly what is broken and want it handled end to end.
- Fixed quote up front
- One PR, reviewed by you
- No retainer required
Hourly
Pay only for the hours worked. Best for diagnostics, audits, or exploratory work where the scope is still emerging.
- Weekly timesheets
- Pay for what you use
- No minimum commitment
Per sprint
A focused 1–2 week sprint when the work is bigger than one fix but smaller than a full project.
- 1–2 week blocks
- Clear sprint goal
- Scale up or stop anytime
Tooling we use
Industry-standard stack, no proprietary lock-in
Integrate Payment Gateway — your questions, answered
How much does it cost to integrate Payment Gateway?
Pricing starts from $2,000 and depends on the scope we find during the diagnostic. You get a fixed, written quote before any work begins — most engagements like this run 1–3 weeks.
How long does it take to integrate Payment Gateway?
Typically 1–3 weeks for a focused engagement. After a short diagnostic we commit to a firm timeline so you know exactly what to expect.
Will you work directly on our existing codebase?
Yes. We work on your GitHub, GitLab or Bitbucket, ship every change as a pull request you review, and follow your code-review standards — not ours.
What exactly will I have at the end?
Concrete, documented outcomes — Integration with provider of your choice, Webhook handling with idempotency + retries, PCI-aware token flow, no card data on your server, and more. No black-box agency report.
How quickly can you start, and do you sign an NDA?
For a focused task like this we can usually start within 24–48 hours of the brief. We sign an NDA on day one, before we look at any code — yours or ours.
Is the integration PCI-aware and secure?
Yes. We use provider-hosted elements so raw card data never touches your servers, keep secrets server-side, and build idempotent webhooks with reconciliation — keeping your PCI scope as small as possible.
Which payment provider should we use?
It depends on your markets and needs — Stripe for global cards and subscriptions, Razorpay or Cashfree for India and UPI, PayPal as a familiar alternative. We can also build a provider-agnostic layer so you are not locked in. We recommend the right fit after a short discovery, with no bias.
Will card data ever touch our servers?
No — by design. We use the provider's hosted elements or tokenised flows so raw card data goes straight to the provider, never your backend. That keeps you out of the heaviest PCI obligations.
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Let's get this off your plate
Send a 60-second brief on Integrate Payment Gateway and a senior engineer replies within 24 hours with a plan and a fixed quote. NDA on day one, no retainer required.