You will get payment gateway, subscriptions, billing, and checkout integration
Top Rated
Top Rated
Project details
You will get a secure and production-ready payment integration tailored to your application. I help startups and businesses implement payment systems that support one-time purchases, subscriptions, recurring billing, invoicing, customer portals, and automated payment workflows.
With 6+ years of full-stack development experience, I have integrated Stripe, PayPal, Paystack, Razorpay, Square, and other payment providers into SaaS platforms, marketplaces, eCommerce applications, and custom web products.
This project can include checkout flows, subscription management, webhook handling, payment automation, refunds, customer billing portals, invoices, role-based access after payment, and secure backend integration.
Whether you're launching an MVP, scaling a SaaS product, or adding payments to an existing application, you'll receive clean, maintainable, and production-ready implementation designed for long-term growth.
With 6+ years of full-stack development experience, I have integrated Stripe, PayPal, Paystack, Razorpay, Square, and other payment providers into SaaS platforms, marketplaces, eCommerce applications, and custom web products.
This project can include checkout flows, subscription management, webhook handling, payment automation, refunds, customer billing portals, invoices, role-based access after payment, and secure backend integration.
Whether you're launching an MVP, scaling a SaaS product, or adding payments to an existing application, you'll receive clean, maintainable, and production-ready implementation designed for long-term growth.
Programming Languages
PHP, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$99
|
Standard
$199
|
Advanced
$399
|
|---|---|---|---|
| Delivery Time | 2 days | 4 days | 7 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Number of Pages | 1 | 3 | 5 |
Design Customization | - | ||
Content Upload | - | - | - |
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$149 - $449
Additional Payment Gateway
(+ 2 Days)
+$99
Subscription Migration
(+ 2 Days)
+$199
Priority Delivery
(+ 1 Day)
+$149Frequently asked questions
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GB
Gennaro B.
Jun 28, 2026
# Senior Full-Stack / AI Engineer — Cazimir Underwriting Intelligence Platform
Excellent work. Fast, professional, high quality work. Highly recommend Muhammad to anyone seeking a job well done.
JR
Jeff R.
Feb 19, 2026
Consolidate Auth0 Authentication
Muhammad did a fantastic job implementing authentication across multiple websites. The technical execution was seamless, and he handled the complexity of the project with ease. Highly recommended for anyone needing reliable and secure development work.
JR
Jeff R.
Jan 28, 2026
SEO Changes
Muhammad did a fantastic job on my website development project. He is extremely knowledgeable in web technologies and brought real expertise to every aspect of the work.
Communication was outstanding—he was always responsive, quick to reply, and made sure to understand exactly what I needed. Even better, he consistently went above and beyond: suggesting smart improvements, catching potential issues before they became problems, and delivering high-quality results that exceeded my expectations.
The final website looks professional, functions perfectly, and was completed on time (or even ahead of schedule). I wouldn't hesitate to hire Muhammad again for any future web projects and highly recommend him to anyone looking for a reliable, skilled, and dedicated developer.
Great work, Muhammad—thank you!
Communication was outstanding—he was always responsive, quick to reply, and made sure to understand exactly what I needed. Even better, he consistently went above and beyond: suggesting smart improvements, catching potential issues before they became problems, and delivering high-quality results that exceeded my expectations.
The final website looks professional, functions perfectly, and was completed on time (or even ahead of schedule). I wouldn't hesitate to hire Muhammad again for any future web projects and highly recommend him to anyone looking for a reliable, skilled, and dedicated developer.
Great work, Muhammad—thank you!
JR
Jeff R.
Nov 13, 2025
Redesign of AI Stock Pick Website
Muhammad was a pleasure to work with and exceeded my expectations. He did everything we asked and more.
AS
Abdullah S.
Jun 22, 2025
MERN Stack Developer Needed – Complete Remaining React Screens & API Integration (2
Milestones)
I worked with M Nouman on a MERN stack project where he was responsible for completing the remaining React screens, integrating backend APIs, and implementing some AI-related functionality. He is highly skilled, fast, and reliable. The UI was clean and responsive, and the API and AI integrations were handled efficiently. Communication was smooth throughout, and everything was delivered on time. I highly recommend him for any MERN or AI-based development work.
About Muhammad
Full Stack AI SaaS Developer | React, Next.js, Node.js, OpenAI
100%
Job Success
Lahore, Pakistan - 5:14 pm local time
Over the last 6+ years, I’ve developed SaaS platforms, AI tools, automation systems, dashboards, and full stack web applications for startups and growing companies.
I specialize in building production-ready products, not just prototypes.
✅ 100% Job Success
✅ Top Rated Freelancer
✅ AWS Certified AI Practitioner
✅ Azure AI Engineer Associate
What I Can Help You Build
• AI SaaS MVPs
• OpenAI / GPT-4 integrations
• AI chatbots & automation systems
• Multi-tenant SaaS platforms
• Subscription & Stripe billing systems
• Admin dashboards & internal tools
• Full stack web applications
• API integrations & backend systems
Tech Stack
Frontend: React, Next.js, TypeScript, Tailwind CSS
Backend: Node.js, NestJS, Express.js, Laravel
AI: OpenAI, LangChain, AI workflows, Vector Databases
Database: PostgreSQL, MongoDB, MySQL, Redis, Supabase
Cloud & DevOps: AWS, Docker, CI/CD, Vercel
Why Clients Work With Me
✓ Clean, scalable, production-ready code
✓ Fast communication and reliable delivery
✓ Strong focus on performance and maintainability
✓ Business-focused development approach
✓ Long-term support and collaboration
Recent projects include AI-powered SaaS products, automation platforms, Auth0 authentication systems, AI dashboards, and subscription-based applications.
If you need a Full Stack AI SaaS Developer who can take your product from idea to production, feel free to send me a message.
Steps for completing your project
After purchasing the project, send requirements so Muhammad can start the project.
Delivery time starts when Muhammad receives requirements from you.
Muhammad works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Review
Review payment workflow, business requirements, and application architecture.
Integration Planning
Design payment flows, subscriptions, webhooks, and billing structure.