01
Stripe Custom Checkout & Elements
Custom embedded payment forms using Stripe Elements, Payment Intents API, Apple Pay, Google Pay, and 3D Secure 2.0 authentication.
05 / 06 — Specialized Engineering
Secure, Frictionless Payment Processing Without Checkout Drop-off
Prevent abandoned orders with frictionless payment flows. Complete setup and custom webhook integration for Stripe, PayPal, Razorpay, Apple Pay, and subscription billing.
Deliverables & Solutions
What Is Included & What I Build
Every build is tailored to solve specific operational bottlenecks, maximize conversions, and maintain sub-second performance.
02
PayPal & Razorpay Integrations
Seamless processing for Indian and international buyers with smart payment buttons, UPI integration, netbanking, and automated currency conversions.
03
Recurring Subscription Billing
Configuring automated recurring billing cycles, trial periods, prorated upgrades, and automated email receipts for SaaS and box memberships.
04
Webhook Verification & Event Handling
Server-side webhook listeners with HMAC signature validation to handle chargebacks, successful charges, failed renewals, and invoice creation.
05
Multi-Currency Geolocation Routing
Automatically displaying and charging customers in their native local currency (USD, EUR, GBP, INR, CAD, AUD) to maximize conversion rates.
06
PCI-DSS Compliance Best Practices
Ensuring zero sensitive credit card details touch your server through tokenized payment workflows and strict SSL/TLS encryption.
Ecosystem & Tooling
Technologies & Frameworks Used in Payment Gateways
Stripe API
PayPal REST API
Razorpay API
WooCommerce Payments
Webhook Listeners
HMAC Signatures
cURL
The Independent Advantage
Why Work Directly With A Senior Developer
Traditional agencies add layers of account managers, sales commissions, and junior developers. Here is why clients work directly with me.
Working With Me
Direct, Accountable Senior Engineering
- Direct Communication: You speak directly with the senior developer writing the code.
- Clean, Bloat-Free Code: Engineered for sub-second speeds and long-term maintainability.
- Fair, Transparent Rates: You only pay for engineering hours—no agency overhead or middleman fees.
- Full Code Ownership: Pushed straight to your GitHub, Shopify theme, or server.
- Fast Turnarounds: Quick iteration cycles and immediate Slack/WhatsApp responsiveness.
Traditional Agency
High Overhead & Layers of Communication
- Account Manager Delays: Feedback passes through 2–3 non-technical staff before reaching coders.
- Junior Execution: Pitched by seniors, but your actual project is often handed to junior hires.
- 2x to 3x Agency Markup: Paying for fancy offices, account managers, and sales teams.
- Proprietary Lock-in: Often hard to manage without paying recurring agency retainers.
- Slow Changes: Even small text or section updates can take weeks to get scheduled.
Frequently Asked Questions
Payment Gateways FAQs
Common questions clients ask before starting a project.
Can you help set up both Indian and international payments on the same store?
Yes. I frequently configure multi-gateway setups where domestic Indian customers can pay via Razorpay (UPI, Netbanking, RuPay) while international visitors automatically see Stripe or PayPal with their local currency.
What happens if a customer’s card is declined or payment fails?
I configure custom webhook listeners and automated email triggers that prompt the customer with a direct payment update link, minimizing involuntary churn on subscriptions.
Is my website PCI compliant when using your payment integrations?
Yes. All integrations utilize modern tokenization (like Stripe Elements or Razorpay Checkout). Sensitive card information is processed directly by the gateway and never stored on your WordPress server.
Can you integrate payment processing into a custom form without WooCommerce?
Yes. If you do not need a full shopping cart and just want a simple payment form (e.g. consultation booking, deposit payment, or invoice payoff), I can build a standalone payment form directly using the Stripe or Razorpay API.
Initiate a Conversation
Have a Project in Mind?
Whether you need a custom Shopify OS 2.0 store, an Elementor or Avada WordPress site, a membership or LMS platform, a custom plugin, or a payment gateway, let's talk.
Direct Channels
I work with clients and engineering teams across timezones. Reach out directly via email, WhatsApp, or submit your project details.
Email Address
work@jatindersingh.inPhone & Direct Line
+91 99889 96401Location & Availability
India · Remote WorldwideRapid Response
Replies within 4–6 business hours across UK, US & AU timezones.
Confidentiality & NDA
Strict IP protection for proprietary codebases & plugins.
Direct Engineering
Direct collaboration with senior developer.