You will get SAAS | SAAS Design | SAAS Developer | Custom SaaS Product & MVP Development
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Project details
Ready to launch your SaaS product? I build full stack custom SaaS web applications with Stripe subscription billing — production-ready, scalable, and built to convert.
From idea to a live, paying-user platform — I handle everything.
✔ Next.js frontend — fast, SEO-ready, responsive
✔ Stripe subscription billing (monthly / yearly / trials)
✔ User authentication (JWT / Google OAuth)
✔ Multi-plan pricing tiers & upgrade/downgrade flows
✔ Customer billing portal (Stripe hosted)
✔ Protected routes by subscription plan
✔ Admin dashboard — manage users & revenue
✔ Webhook handling for Stripe events
🛠️ Tech Stack:
Frontend: Next.js / React
Backend: Node.js / Express
Payments: Stripe API + Webhooks
Database: PostgreSQL / MongoDB
Auth: NextAuth / JWT
Deployment: Vercel / AWS
✅ Full stack web development — one developer, end to end
✅ Clean, scalable & well-documented code
✅ Built for real users, not just demos
✅ Post-delivery support included
Have an idea or MVP to upgrade? Message me before ordering. 🚀
From idea to a live, paying-user platform — I handle everything.
✔ Next.js frontend — fast, SEO-ready, responsive
✔ Stripe subscription billing (monthly / yearly / trials)
✔ User authentication (JWT / Google OAuth)
✔ Multi-plan pricing tiers & upgrade/downgrade flows
✔ Customer billing portal (Stripe hosted)
✔ Protected routes by subscription plan
✔ Admin dashboard — manage users & revenue
✔ Webhook handling for Stripe events
🛠️ Tech Stack:
Frontend: Next.js / React
Backend: Node.js / Express
Payments: Stripe API + Webhooks
Database: PostgreSQL / MongoDB
Auth: NextAuth / JWT
Deployment: Vercel / AWS
✅ Full stack web development — one developer, end to end
✅ Clean, scalable & well-documented code
✅ Built for real users, not just demos
✅ Post-delivery support included
Have an idea or MVP to upgrade? Message me before ordering. 🚀
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Security, DesignWhat's included
| Service Tiers |
Starter
$149
|
Standard
$499
|
Advanced
$1,999
|
|---|---|---|---|
| Delivery Time | 7 days | 14 days | 30 days |
Number of Revisions | 2 | 3 | 9 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | |||
Source Code |
6 reviews
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MF
Matt F.
Apr 22, 2026
Private Multiple Listing System database
Yahya does a great job executing a rough vision through concise communication and exceptional development capability. He is a pleasure to work with, and we'll be relying on him for multiple projects going forward. He's responsive, on-time and capable, and his ideas make the product better while compromising nothing. Highly recommend without reservation!!!
BG
Brayden G.
Mar 13, 2026
Develop a Small System Using DataForSeo
Yahya is hands down the best person to hire for any job. He is extremely talented when it comes to problem solving and his work ethic is unmatched. He has been an essential asset to our team.
RJ
Rasmus J.
Jan 29, 2026
JSON API Integration Specialist for Excel Online
Very competend with a lot of good solutions and had a very good work around for a solution we thought was dead!
I can only recommend Yahya!!
I can only recommend Yahya!!
LP
Liz P.
Sep 17, 2025
Automate Daily Data Export from eBay and Goldin (Sold Listings)
RJ
Rasmus J.
Sep 16, 2025
JSON API Integration Specialist for Excel Online
very skilled programmer, he knows how to do and was very helpful with a lot of good solutions.
I will recomend him anytime!
I will recomend him anytime!
About Yahya
Full Stack Developer | Data Extraction | React, Next.js, Python
100%
Job Success
El Jadida, Morocco - 2:58 am local time
With 4+ years building AI-powered SaaS platforms using React, Next.js, Python (FastAPI, Django), and OpenAI/GPT-4 + LangChain, I turn complex product ideas into clean, maintainable systems built to scale.
🔹 What I Build
💻 Full Stack Web Applications
End-to-end web app development: React, Next.js, Tailwind CSS on the frontend — FastAPI, Django, Flask, or Spring Boot on the backend. Optimized for performance, clean architecture, and real-world scale.
→ REST API design & backend architecture
→ JWT authentication & role-based access control (RBAC)
→ PostgreSQL & MySQL database design
→ Modular, testable codebases
🤖 AI Integration & AI-Powered SaaS
I build practical AI features into SaaS products using OpenAI API, GPT-4, LangChain, and vector databases — focused on real business value, not gimmicks.
→ AI chatbots & custom assistants
→ Document analysis & automated summarization
→ RAG-powered search & recommendation systems
→ AI-powered dashboards & reporting tools
🔗 SaaS Development & API Integration
Full SaaS platform development with seamless integrations: Stripe, Firebase, Supabase, HubSpot, Notion, Airtable, Shopify, Google Workspace, and more.
→ Multi-tenant SaaS architecture
→ Scalable backend microservices
→ Third-party API integration
📌 Recent Project Types
→ AI-powered CRM & lead management platforms
→ SaaS MVPs from concept to deployment
→ Data dashboards with AI-generated insights
→ Internal business tools & custom ERP systems
→ Intelligent search for large-scale datasets
✅ Why Clients Work With Me
→ Deep expertise in AI integration + full stack engineering
→ Strong system architecture — built for long-term growth
→ Clear communication, well-documented code, on-time delivery
→ Experienced with startup speed and enterprise quality
📩 Ready to build your next SaaS product or integrate AI into your platform? Let's talk.
Steps for completing your project
After purchasing the project, send requirements so Yahya can start the project.
Delivery time starts when Yahya receives requirements from you.
Yahya works on your project following the steps below.
Revisions may occur after the delivery date.
Let’s Get Started
Send me a message on Upwork, tell me what you need, and I’ll start working right away.