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Fiverr Pro
English
$
USD
I will develop ai website, ai chatbot, ai saas platform for your business
Rezaur Hasib
About this gig
Tired of developers who deliver demos instead of real products?
I build production-ready AI web apps, SaaS platforms, and chatbots fully deployed, documented, and yours to manage from day one.
WHAT I BUILD
- AI SaaS Platforms - auth, Stripe billing, admin dashboards
- RAG Chatbots - trained on YOUR data, fully private
- AI Websites - Next.js, SEO-friendly, with AI integration
- Custom LLM Apps - OpenAI, Claude, Gemini, LangChain
EVERY PROJECT INCLUDES
- Full source code, no lock-in
- Live deployed URL
- Documentation so you can manage it yourself
- NDA available on request
- Secure, production-hardened architecture
MY TECH STACK
Frontend: Next.js 14, React, Tailwind CSS Backend: Python, FastAPI, LangChain, Node.js Database: PostgreSQL, MongoDB, Supabase
Deployment: Vercel, AWS, Loveable, Replit
I work with founders and small teams who need a reliable developer without hiring full-time. Honest scope, real timelines, no disappearing after delivery.
Message me before ordering so I can understand your project, confirm scope, and give you an accurate timeline. I respond within 1 hour.
Get to know Rezaur Hasib
Rezaur Hasib
Web and Mobile App Dev
- FromBangladesh
- Member sinceJul 2024
- Avg. response time1 hour
Languages
Bengali, English
Full-stack AI & Mobile dev specializing in Next.js web applications, AI-powered SaaS platforms, intelligent chatbots using AI, RAG pipelines and mobile apps.
What I work on:
→ AI websites with real LLM integration
→ SaaS platforms with subscriptions and usage billing
→ RAG chatbots trained on your own docs
→ Cross-platform mobile apps (Android) with React Native
Every project comes with source code, a live URL so you can manage it by yourself.
I work with founders and small teams who need a reliable dev without hiring full-time. Message me first — I'll give you an honest scope and timeline.
My Portfolio
FAQ
Do I need to provide anything before you start?
Just a clear description of what you want to build. For Standard and Premium packages, a short brief covering your target users, key features, and preferred design style helps me deliver faster. I'll always confirm full scope before starting - no surprises.
Will I get the source code and can I edit it after delivery?
Yes — you receive 100% of the source code, pushed to a private GitHub repo in your name. The code is clean, well-commented, and built with Next.js / React, so any developer can understand and extend it after delivery. You own it completely.
How does the AI chatbot know about my specific business?
I use Retrieval-Augmented Generation (RAG) — your documents, FAQs, and knowledge base are embedded into a vector database. When a user asks a question, the system finds the most relevant content from your documents and uses it to generate a precise answer. It only answers from your provided content.
What if I need changes after the project is delivered?
Every package includes revisions (depending on tier). Premium packages also include 20 days of post-delivery support. For ongoing maintenance or new features, I offer a retainer arrangement, just message me to discuss.
Will my project stay confidential?
Absolutely. I sign an NDA for any project that requires it, just mention it when you message me before ordering. Your idea, code, and business details remain strictly confidential. I do not use client projects as portfolio pieces without explicit written permission.
Can you integrate with my existing website or platform?
Yes. I can add AI features to existing websites, integrate with platforms like Shopify or WordPress via APIs, or build a standalone AI tool that connects to your current systems. Message me with the details and I'll confirm whether it fits within a standard package or requires a custom quote.
