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I will integrate stripe, paypal or payment gateway on your website
Toseef Hasan
About this gig
Stop losing sales to payment friction. I'll build you a bulletproof payment system.
Integrated enterprise-grade payment systems handling sensitive transactions with 99.9% uptime reliability. From SaaS subscriptions to marketplace payouts. I architect payment gateways that scale.
What you get:
- Stripe/PayPal Integration: Checkout flows, saved cards, 3D Secure
- Subscription Management: Recurring billing, trial periods, proration, cancellation handling
- Webhook Architecture: Idempotent event handling, retry logic, failure recovery
- Multi-party Payments: Stripe Connect for marketplaces, seller onboarding, split payments
- Compliance: PCI-DSS awareness, KYC verification integration, fraud prevention hooks
Tech stack:
- Backend: Node.js, NestJS, Express
- Frontend: React, Next.js, Tailwind CSS
- Database: MongoDB, PostgreSQL, Redis (session/cache)
- DevOps: Docker, AWS deployment, CI/CD pipeline integration
Deliverables:
- Fully functional payment integration
- Webhook endpoint with security validation
- Admin dashboard for transaction monitoring
- Test suite (success, failure, edge cases)
- Technical documentation & setup guide
Post-delivery: 14 days of bug fixes included.
Get to know Toseef Hasan
Toseef Hasan
Senior Full Stack Developer NodeJS NestJS React SaaS Architect
- FromPakistan
- Member sinceNov 2019
Languages
English
Hi, I’m Toseef Hasan, a Senior Full-Stack Engineer & Tech Lead with 7+ years of experience building scalable SaaS platforms, marketplaces, and backend-heavy systems for startups and international clients.
I specialize in Node.js, NestJS, React, and Next.js, with a strong focus on clean architecture, performance, and long-term scalability. I’ve led development teams, designed microservices-based systems, integrated secure payment flows (Stripe & subscriptions), and delivered production-grade applications across fintech, healthcare, and Web3-enabled platforms.
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FAQ
Which payment providers do you support?
Stripe (primary), PayPal, and custom providers. I recommend Stripe for most SaaS/microservices architectures.
Do you handle PCI compliance?
I implement Stripe Elements/Checkout, which shifts PCI burden to Stripe (SAQ-A compliance).
What about refunds and disputes?
I build webhook handlers for chargebacks, automate refund workflows, and create admin tools for your support team.
