Credit and debit card payments
A checkout built into your website or application, using provider-hosted fields or tokenization so raw card details do not pass through your server.
Payment processing integration
Get paid inside the software your business already owns.
I integrate secure credit card payments, subscriptions, PayPal, Apple Pay, Google Pay, receipts, refunds, and payment automation directly into custom websites and applications.
Secure checkout
Complete your payment
PayPal
Apple Pay
G Pay
or pay by card
Card number •••• •••• •••• 4242
MM / YY
CVC
Pay securely
The interface is yours. Sensitive card data stays with the payment provider.
STRIPEAUTHORIZE.NETPAYPALAPPLE PAYGOOGLE PAY
What I implement
The whole payment lifecycle—not merely a Pay button.
A payment is only useful when the rest of the business responds correctly. The checkout, database, customer access, receipts, refunds, and accounting trail need to agree.
Subscriptions and recurring billing
Monthly or annual plans, trials when you want them, upgrades, downgrades, prorations, cancellation rules, failed-payment recovery, and customer billing portals.
Apple Pay and Google Pay
Faster wallet checkout on supported devices through Stripe or PayPal Complete Payments, subject to provider, merchant-account, browser, and regional availability.
Payment links and hosted checkout
A quick, secure option for invoices, deposits, events, donations, or simple products when a fully embedded checkout would add cost without adding value.
Webhooks and business automation
Payments update orders, provision access, send receipts, flag failures, record refunds, and notify your team—even when the customer closes the browser.
Security and operational safeguards
Signed webhook verification, idempotency, server-side pricing, audit trails, least-privilege keys, test-mode isolation, and a deliberate approach to PCI scope.
Choosing a provider
Fit first. Brand name second.
The right gateway depends on your existing merchant relationship, transaction types, subscription model, countries, currencies, checkout experience, and reporting needs. I can implement the provider you already use or help compare realistic options.
Flexible product and subscription experiences
Stripe
A strong fit for custom applications, SaaS billing, marketplaces, saved payment methods, hosted or embedded checkout, and wallet payments such as Apple Pay and Google Pay.
- One-time payments
- Subscriptions and billing portal
- Apple Pay, Google Pay, and Link
- Detailed webhook and API ecosystem
Established merchant-account workflows
Authorize.net
Often the right choice when a business already has an Authorize.net gateway or a preferred merchant-services relationship. Accept.js and Accept Hosted can tokenize card data, while Automated Recurring Billing handles subscriptions.
- Accept.js and Accept Hosted
- Card and bank-account payments
- Customer profiles
- Automated Recurring Billing
PayPal plus cards and popular wallets
PayPal Complete Payments
An all-in-one PayPal checkout option that can combine PayPal, cards, Venmo, Pay Later, Apple Pay, and Google Pay when those methods are available for the merchant and customer.
- PayPal and card checkout
- Venmo and Pay Later
- Apple Pay and Google Pay
- Branded or expanded checkout flows
Payment methods and features vary by merchant account, customer device, browser, country, currency, business category, and provider approval. Availability is verified during implementation rather than promised from a generic checklist.
Where integrations fail
The charge succeeded. Did your system notice?
Customers close tabs. Networks retry requests. Webhooks arrive twice or out of order. A production payment flow must remain correct anyway.
01
Price on the server
The browser identifies what the customer wants; trusted server code determines what it costs.
02
Create a provider-side payment
Checkout or hosted fields collect payment details without exposing sensitive credentials to your application.
03
Verify the provider callback
Signed webhooks confirm the actual payment state instead of trusting a success page or query string.
04
Fulfill exactly once
Idempotent processing creates the order, ticket, subscription, or account access once—even when events are delivered again.
05
Reconcile and recover
Failures become visible, retryable, and traceable rather than leaving paid customers with missing products or access.
Security without false promises.
Hosted checkout and tokenized fields can reduce how much sensitive card data touches your system, but they do not make a business automatically compliant. I design the integration to minimize exposure and document what still belongs to you and your payment provider.
Built into the implementation
- Separate test and production credentials
- Secrets kept out of source code and browser bundles
- Webhook signature verification and replay protection
- Idempotency for checkout creation and fulfillment
- Server-owned prices, quantities, and permissions
- Auditable refunds, disputes, and subscription changes
Start with your business model
Ready to accept payments without sending customers somewhere else?
Tell me what you sell, whether payments repeat, which provider you use today, and what should happen after someone pays. I'll map the smallest reliable integration.
Discuss your payment projectRelated expertise
Explore the connected parts of your system
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Give customers a secure place to review documents, status, and balances.
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Collect deposits, prepayment, cancellation fees, and recurring charges.
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Connect payment success directly to tickets, capacity, and check-in.
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Synchronize transactions with fulfillment, CRM, invoices, and bookkeeping.
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