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Fiverr Pro
English
$
USD
I will build your ai powered saas or multi agent system with nextjs
Humayun S
About this gig
What I build
I'm a full-stack AI/ML engineer who ships production-grade SaaS systems fast. I've built a complete multi-tenant pharmacy ERP solo in under 40 days, a real-time messaging platform with a Tauri desktop client, and a multilingual WhatsApp AI ordering agent powered by Claude all from scratch.
If you need an AI-powered web app, a multi-agent backend, or a SaaS product that actually works in production I'm the person to build it.
My stack
- Frontend: Next.js 15 (App Router), React, TypeScript, Tailwind CSS
- Backend: FastAPI, NestJS, Hono, WebSockets, JWT / RBAC auth
- AI/ML: LangChain, LangGraph, OpenAI GPT-4, Whisper STT/TTS, RAG pipelines, multi-agent orchestration, LiveKit voice AI
- Database: PostgreSQL, Supabase (RLS), Neon, MongoDB, Redis
- DevOps: Docker, GitHub Actions CI/CD, Vercel, AWS, Turborepo
What makes my work different
- I've shipped real products to real users not just tutorials or demos
- Strong product thinking: I consider UX, performance, and maintainability
- Experienced with multi-tenant architecture, row-level security, and RBAC from day one
- Bilingual support (English + Urdu) built-in when needed for South Asian markets
- I move fast Ruhab ERP: 50+ REST APIs in under
Get to know Humayun S
Humayun S
FullStack Engineer
- FromPakistan
- Member sinceApr 2026
- Avg. response time1 hour
Languages
English, Urdu
I don't just write code; I build systems that solve business bottlenecks. With a dual background in Software Engineering and Computer Science, I’ve spent my career bridging the gap between complex technical requirements and high-level business goals across three continents.
My Portfolio
FAQ
Can you build a custom AI agent for my specific use case?
Yes — I've built agents for healthcare triage, restaurant ordering (WhatsApp + voice), and pharmacy workflows. Message me with your use case and I'll scope it accurately.
Do you provide the source code?
Always. You get full ownership of the code, a clean GitHub repo, and a brief README covering setup and deployment steps.
Can you integrate with my existing backend or database?
Yes — I can extend existing projects. Share your repo or schema and I'll review it before you order to confirm scope.
Do you work with OpenAI, Anthropic, or other LLM providers?
Yes — I have production experience with OpenAI GPT-4, Anthropic Claude, and Whisper. I'll recommend the right model for your budget and use case.
What if my project is bigger than the Premium package?
Send me a message with your requirements — I handle custom-scoped projects and can provide a milestone-based quote for larger builds.
