Available for hire · Remote worldwide

Md Refat
Bhuyan

Full-Stack Developer

Full-Stack & AI Engineer at Cunard Consulting Ltd, UK. I rescue stalled AI projects, help local businesses go digital (EcoEats: 150K+ customers), and ship production MERN + LangChain systems — zero missed deadlines.

ReactNode.jsLangChainOpenAIMongoDBAWS
20+
Projects Shipped
15+
Happy Clients
3+
Years Exp.

Key Statistics

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Projects Delivered
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Years of Excellence
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Happy Clients
0%
On-Time Delivery
Md Refat Bhuyan — Full-Stack Developer & AI Engineer based in Dhaka, Bangladesh
Md Refat Bhuyan
Dhaka, Bangladesh
Available for Work
About Me

Developer who actually delivers.

I'm Md Refat Bhuyan — a Full-Stack Developer and AI Engineer working remotely with Cunard Consulting Ltd, UK. I build production software that ships: AI-powered chatbots, real-time banking systems, and full e-commerce platforms — delivered on time, without hand-holding.

My edge is combining a B.Sc. in Electrical & Electronics Engineering (CGPA 3.81/4) with hands-on LLM engineering — I've integrated LangChain and RAG pipelines into live fintech products, not just side projects. I'm certified in Full-Stack Development and SQA & Cyber Security.

Open to full-time remote roles, senior contract work, and early-stage founding engineer conversations — particularly in fintech, AI tooling, or developer infrastructure.

I work with clients in the UK, US, UAE, Australia, and beyond. Based in Dhaka (GMT+6) — morning overlap calls with UAE (GMT+4), UK, and Australian teams are easy.

Currently @ Cunard Consulting Ltd, UK — Full-Stack Developer (Remote)
Full-Stack MERN — MongoDB, Express.js, React, Node.js
AI & LLM Engineering — LangChain, RAG Pipelines, OpenAI GPT-4o
Cloud Infrastructure — AWS, Azure, GCP, Vercel
Real-Time Systems & Microservices Architecture
SQA, Automated Testing & Cyber Security
MCP Server Development for AI Agent Tooling
Who I Help

Does this sound like you?

Three types of clients I solve real problems for — pick yours.

🤖
AI Builders

Built with AI. Got stuck.

You started with Cursor, Claude Code, or ChatGPT. Your app is 80% done — but it's broken in production, your RAG pipeline hallucinates, or the code is a spaghetti mess no one can maintain.

  • LangChain / RAG pipeline not working
  • Vibe-coded app needs a real engineer
  • Context engineering & prompt architecture
  • Ship it properly — tested, deployed, live
Rescue My AI Project
EcoEats: 0 → 150K+ customers
🏪
Small & Local Business

Real business. Ready to grow.

You run a restaurant, salon, clinic, or shop. You want customers to find you online, order from you, book you — and you want AI to handle the enquiries you can't.

  • Full website + online ordering / booking
  • Google-ready SEO from day one
  • AI chatbot — answers 24/7, no staff needed
  • Built to scale with your business
Launch My Business Online
🔧
Project Rescue

Broken app. Missed deadline.

Your previous developer disappeared. The app is slow, buggy, or half-finished. You need someone to come in, understand the codebase fast, and fix it — no drama, no excuses.

  • Code audit & bottleneck fix in 48h
  • Complete half-built features
  • Performance, security & stability review
  • Ongoing retainer if you want a safety net
Get a Free Audit
What I Do

Skills that drive results.

Every skill is battle-tested in production — not just theory, but software that solves real business problems.

How I Work

Simple process, remarkable results.

No complexity, no confusion. Just a clear path from idea to production.

01

Discovery Call

I understand your business goals, technical requirements, and timeline. Free 30-min consultation.

02

Proposal & Plan

You receive a detailed scope, tech stack selection, timeline, and fixed-price quote within 24 hours.

03

Build & Iterate

Agile sprints with weekly demos. You see progress every step. No surprises, no black boxes.

04

Launch & Support

Deployment, testing, go-live. Plus 30 days of free post-launch support included in every project.

Ready to Start?

First consultation is completely free. No commitment required.

My Work

Proof over promises.

Real projects, live in production, solving real problems for real clients.

Tech Stack

Battle-tested technologies.

Every tool in the stack is chosen for performance, scalability, and developer experience.

⚛️ReactFrontend
Next.jsFrontend
🎨TailwindFrontend
🟢Node.jsBackend
🚂ExpressBackend
🍃MongoDBDatabase
🐘PostgreSQLDatabase
🤖OpenAIAI
🦜LangChainAI
🐳DockerDevOps
☁️AWSCloud
🔷AzureCloud
🔧TerraformDevOps
🌲CypressTesting
Socket.IOReal-Time
🌤️CloudinaryMedia
🔥FirebaseAuth
💳StripePayments
Testimonials

Clients who trust me.

5.0 average rating
100% On-Time Delivery
Money-Back Guarantee
30-Day Free Support
NDA Available
Transparent Pricing
FAQ

Common questions.

Everything clients and recruiters typically ask before reaching out.

Still have a question?

Ask me directly
Get In Touch

Let's build something great.

Tell me about your project. I'll respond within 24 hours with a detailed plan.

Phone / WhatsApp
+880 1575267132
Location
Dhaka, Bangladesh · GMT+6

Response Time

Within 2–4 hours (Mon–Sat, GMT+6). WhatsApp is fastest.

Chat on WhatsApp