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USD
I will integrate stripe payments into your saas or web app
Haider Ali
About this gig
I help SaaS founders and web app owners add secure, reliable payment and subscription billing using Stripe or Polar. Whether you need a simple one-time checkout flow or a full subscription system with usage-based billing, I can build and integrate it into your application.
I've implemented subscription and usage-based billing in Clarix, a full-stack AI SaaS platform I built and deployed independently. This includes multi-tier pricing, usage limits, subscription status tracking, and webhook-driven synchronization between the payment provider and the application database.
What I can help with:
- Stripe or Polar payment integration
- One-time payments and subscription plans
- Usage-based billing and metering
- Secure webhook handling
- Subscription status synchronization
- Feature and usage gating based on subscription tiers
- Integration with Next.js, React, Node.js, and TypeScript applications
- Clean, maintainable, production-ready code
I work directly with your existing codebase or can help build the billing flow as part of a new application. If your requirements don't fit the listed packages, message me before ordering and I'll scope the work and provide a custom offer.
Get to know Haider Ali
Haider Ali
Full Stack AI Engineer Building Production AI Apps with LangChain and Nextjs
- FromPakistan
- Member sinceJun 2021
- Avg. response time2 hours
Languages
English, Urdu
I build and ship AI-powered web applications from idea to production.
My work includes AI agents, LLM integrations, RAG, tool-calling, real-time systems, and full-stack development with Next.js, React, TypeScript, Node.js, and PostgreSQL.
I've built and deployed three live AI products, including a multi-model AI SaaS platform, a real-time voice AI app, and an agent-based expense tracker.
I focus on building practical, production-ready systems — not just demos — and handle projects end-to-end, from architecture to deployment and debugging.
Live examples available on request.
My Portfolio
Other Software Development Services I Offer
FAQ
Do I need my own Stripe or Polar account?
Yes. You'll need an active account with your chosen payment provider. I can guide you through setup if needed.
Can you add subscription tiers to my existing app?
Yes. I can implement multiple pricing tiers, usage limits, and subscription status tracking.
Do you handle webhooks for payment events?
Yes. I set up secure webhook handling to keep your app in sync with events like payments, cancellations, and renewals.
Can you integrate this into my existing codebase?
Yes. I can integrate the billing system into your existing codebase. Repository access or the relevant project files will be needed to review the setup and implement it properly.
What if my requirements are more complex than the listed packages?
Message me before ordering — I can scope a custom offer based on your project.
