۞قُلۡ يَٰعِبَادِيَ ٱلَّذِينَ أَسۡرَفُواْ عَلَىٰٓ أَنفُسِهِمۡ لَا تَقۡنَطُواْ مِن رَّحۡمَةِ ٱللَّهِۚ إِنَّ ٱللَّهَ يَغۡفِرُ ٱلذُّنُوبَ جَمِيعًاۚ إِنَّهُۥ هُوَ ٱلۡغَفُورُ ٱلرَّحِيمُ— Al-Quran 39:53

MD RATUL HOSSEN

AI Engineer — LLMs, RAG & Intelligent Agents

I build AI systems that understand people — in their own language — and ship them as products they can actually use.

MD RATUL HOSSEN

About

Building AI that speaks people's language.

I'm a Computer Science & Engineering undergraduate at in Bangladesh, currently on a semester exchange at in Malaysia.

My work sits at the intersection of large language models and real products. I built and deployed a voice-enabled, bilingual RAG assistant for the Daffodil AI Club — one that understood questions in both Bangla and English.

I care about AI that works for people who are usually left out of it: speakers of low-resource languages, students, and small communities. My long-term ambition is to understand LLMs deeply enough to build one from scratch.

Beyond code, I'm pursuing the Duke of Edinburgh's International Award, which pushes me to grow through service, fitness and new skills. I also read, play chess and football, and write poetry.

Global journey

  1. Bangladesh · Home

  2. Malaysia · Now

    — exchange

  3. Europe · Next

    Master's in Artificial Intelligence

Languages

  • BengaliNative
  • EnglishB2 (CEFR)
  • Hindi & UrduB1 (CEFR)

Journey

Where I've learned, built and led.

Two universities in two countries, the teams I've worked with, and the moments I've been proud to stand up and present.

Education

Jan 2025 — 2028 (expected)

B.Sc. in Computer Science & Engineering

Daffodil International University · Dhaka, Bangladesh

  • A+ in Programming & Problem Solving, Mathematics I & II, Physics II and Data Structures Lab
  • Relevant coursework: Data Structures, Algorithms, Database Systems, Object-Oriented Programming

3.68

/ 4.00 CGPA

3.69
Spr '25
3.56
Sum '25
3.86
Fall '25
3.61
Spr '26
3.66
Sum '26
Aug 2026 — Dec 2026In progress

Student Exchange — Bachelor of Computer Science (Hons)

INTI International University · Nilai, Malaysia

2021 — 2023

Higher Secondary Certificate — Science

Noapara Govt. College · Jashore, Bangladesh

4.58 / 5.00 GPA

Experience & leadership

  1. After my exchangeThe Duke of Edinburgh's International Award — Gold (Direct Entry)UpcomingDaffodil International UniversityThe highest level of the Award. Once I'm back in Bangladesh I'll take the Direct Entry route to Gold — a longer commitment across service, skills, physical recreation, a residential project and an expedition.

Honours, talks & events

Skills

AI at the core. Mobile on the side.

The tools I reach for — from training and retrieval to shipping the result into people's hands.

AI & Large Language Models

Where I spend most of my time.

LLMsRAG systemsAI agentsPrompt engineeringTransformersFine-tuning

ML stack

Frameworks and model tooling.

PyTorchscikit-learnHugging FaceOllama

Programming

Daily drivers.

PythonCC++Kotlin

Data science

From raw data to insight.

NumPyPandasMatplotlibSeabornJupyter

Mobile

Bringing AI into people's pockets.

KotlinJetpack ComposeMVVMFirebase

Build & deploy

Shipping it for real.

FastAPIVercelHugging Face SpacesGit & GitHub
Completed

The Duke of Edinburgh's International Award — Bronze

An internationally recognised award built on personal commitment across four sections. I completed the Bronze level in 2026 — the certificate is on its way.

See the details in my journey →

Projects

Things I've built.

Each one started with a real problem. Open a project to see how I approached it and what came out of it.

Research interests

Research that starts from what I build.

I'm a builder first. Most of what I know about AI comes from shipping it — a bilingual RAG assistant, a browser-based stroke screening tool and an AI-powered mobile app.

Building them showed me where things break: models that struggle with real-world data, answers that need grounding, and AI features that feel bolted on instead of designed into the product.

That's where I want my research to grow — close to what I build. I'm starting with machine learning and large language models, and how to bring them into apps people use every day.

Areas of interest

Machine Learning

Building, evaluating and improving models on real-world data.

Artificial Intelligence & LLMs

How large language models work, and making them reliable with retrieval and fine-tuning.

AI integration in apps

Bringing ML and LLM features into mobile and web apps, designed in from the start.

Publications

No publications yet — papers will be listed here as they're published.

Canvas

Beyond the code.

Life outside the terminal — the places, people and moments that shape me.

Reading

Always halfway through a book

Chess

Thinking a few moves ahead

Traveling

Exploring the world

Poetry

Reading in the quiet hours

Contact

Let's build something that matters.

Open to research collaborations, internships and graduate opportunities in AI. The fastest way to reach me is email.