You will get Stripe payment integration with webhooks and complete error handling
Project details
I'll integrate Stripe with webhooks, idempotency, and all edge cases handled—built to the standard of systems processing $100K+/month.
Scope of work:
• Stripe Checkout or Payment Intent API setup
• Webhook handler with strict cryptographic signature verification
• Success, failure, cancellation, and refund state handling
• Idempotency keys to entirely prevent double-charges
• Subscription billing cycles with multiple plans (Standard & Premium)
• Fully tested end-to-end using Stripe CLI before delivery
I designed a unified payment layer handling $100,000+/month at 99.9% uptime across Stripe, Paddle, and Xendit in production[cite: 1]. Payment infrastructure is my strongest engineering skill.
Basic : One-time Stripe Checkout session setup + basic verified webhook handler.
Standard : Full payment/invoice flow + active subscriptions + automated refund logic.
Premium : Complete subscription lifecycle system + multi-plan management + full API documentation.
*Pure backend project; no frontend UI layouts included.
Message me with your tech stack to confirm the right package before purchasing
Scope of work:
• Stripe Checkout or Payment Intent API setup
• Webhook handler with strict cryptographic signature verification
• Success, failure, cancellation, and refund state handling
• Idempotency keys to entirely prevent double-charges
• Subscription billing cycles with multiple plans (Standard & Premium)
• Fully tested end-to-end using Stripe CLI before delivery
I designed a unified payment layer handling $100,000+/month at 99.9% uptime across Stripe, Paddle, and Xendit in production[cite: 1]. Payment infrastructure is my strongest engineering skill.
Basic : One-time Stripe Checkout session setup + basic verified webhook handler.
Standard : Full payment/invoice flow + active subscriptions + automated refund logic.
Premium : Complete subscription lifecycle system + multi-plan management + full API documentation.
*Pure backend project; no frontend UI layouts included.
Message me with your tech stack to confirm the right package before purchasing
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$70
|
Standard
$145
|
Advanced
$299
|
|---|---|---|---|
| Delivery Time | 3 days | 5 days | 8 days |
Number of Revisions | 1 | 1 | 2 |
Number of Pages | 1 | 2 | 11 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$25 - $90
Stripe Customer Billing Portal Setup
+$50
Live Server Deployment & Webhook Setup
(+ 1 Day)
+$50
Multi-Currency & Stripe Tax Configuration
(+ 1 Day)
+$35
1 review
(1)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
NM
Noor Mohammed M.
Jun 20, 2026
Full stack web
Ahsan delivered a high-quality full-stack application very quickly with excellent communication and clear understanding of requirements. Highly recommended.
About Ahsan
Senior Backend Engineer | Node.js | API Design & Payment Integrations
Sylhet, Bangladesh - 2:12 pm local time
with a high-traffic backend that is slowing down under real load?
I am a Senior Backend and Full-Stack Engineer specializing in production-grade
Node.js and Next.js systems. Over the past two years, I have engineered
multi-tenant architectures for software platforms serving 1,000,000+ students
across 7,000+ institutions — handling $100,000+ in monthly revenue at 99.9%
uptime.
When you hire me, you are not hiring someone to write code. You are hiring an
engineer focused on business outcomes, data integrity, and cost efficiency.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
WHAT I DO BEST
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
▸ Payment & Billing Infrastructure
Unified processing layers across Stripe, Paddle, and Xendit — with
fail-safe webhook architecture that eliminates double-charging and
partial-write data corruption.
▸ Database Optimization
I rescue slow APIs. Through composite indexing, query rewrites, and
schema redesign, I consistently reduce MySQL response times by 10–30%
on the highest-traffic production endpoints.
▸ SaaS & Multi-Tenant Architecture
Secure Role-Based Access Control, real-time connection-pooled services,
and multi-tenant systems designed for scale from day one.
▸ Cloud Cost Optimization
Migrated transactional email infrastructure to AWS SES and moved asset
storage to AWS S3 — reclaiming 14+ GB of production database storage
and cutting ongoing vendor costs.
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
PRODUCTION METRICS
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
✔ $100,000+ monthly revenue handled at 99.9% uptime
✔ 1,000,000+ users across 7,000+ institutions on a single platform
✔ 14+ GB of database storage reclaimed via S3 migration
✔ Real-time services stabilized under thousands of concurrent connections
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
CORE STACK
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Backend → Node.js, Adonis.js, Django, REST API, Webhooks, Redis
Frontend → React.js, Next.js, Redux, TypeScript
Database → MySQL (Atomic Transactions, Composite Indexing), Redis
Cloud → AWS SES, AWS S3, Docker, Linux
Other → Codeforces Specialist (1400+ rating) — strong algorithmic
problem-solving background
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
If you need an engineer who takes full ownership of your backend, understands
real-world scalability, and ships systems that survive production traffic —
let's talk.
Steps for completing your project
After purchasing the project, send requirements so Ahsan can start the project.
Delivery time starts when Ahsan receives requirements from you.
Ahsan works on your project following the steps below.
Revisions may occur after the delivery date.
Stripe Account Setup & Architecture Plan
I analyze your system's business model (one-time fees vs. subscription plans), map out the required database table changes for payment tracking, and configure your Stripe developer test keys
Checkout Session & Payment Intent Logic
I implement the backend logic to generate secure Stripe Checkout sessions or configure the Payment Intents API, ensuring payment sessions pass accurate customer metadata