SHazamal.
Portrait of Shazamal Saif, AI Backend Engineer

Hi, I'm

Shazamal
Saif

I build and integrate production-ready AI systems and intelligent chatbots into real-world applications, leveraging RAG, MCP tool orchestration, vector databases, n8n automation, and API-first backend architectures.

About me

Open to work

I'm Shazamal Saif, an AI Backend Engineer focused on building production-ready AI backend systems, intelligent chatbots, and AI-powered applications.

I work with Retrieval-Augmented Generation (RAG), intelligent chatbots, MCP-based tool orchestration, and backend services, using Python, LangChain, LangGraph, vector databases, FastAPI, and n8n to build practical AI solutions and reliable backend systems that solve real-world problems.

Location

Dhaka, Bangladesh

Education

Southeast University Logo
Southeast University BSC. in Computer Science and Engineering
Dawood Public School and College Logo
Dawood Public School and College Higher Secondary Certificate (HSC) Jessore Cantonment

My toolkit.

The technologies I use to build AI systems, backend services, data pipelines, and modern applications.

Python logo Python
PyTorch PyTorch
NumPy NumPy
LangChain LangChain
LangGraph LangGraph
Qdrant Qdrant
FAISS FAISS
Hugging Face Hugging Face
RAG RAG
llm apis LLM APIs
FastAPI FastAPI
REST APIs REST APIs
Pydantic Pydantic
PostgreSQL PostgreSQL
Supabase Supabase
Docker Docker
Git Git
GitHub GitHub
Vercel Vercel
n8n n8n
API Integration API Integration
Workflow Automation Workflow Automation

Selected Work


01 — Offline RAG & Evaluation Pipeline
RAGAS Evaluation Benchmark: Faithfulness and Answer Relevancy scores
zoom_in View Full Benchmark

RAGAS Evaluation across 41 test questions. Compares Faithfulness (Llama: 0.88, Mistral: 0.79, Qwen: 0.80), Answer Relevancy (0.63–0.70 raw, 0.72–0.75 excluding refusals), and Refusals (Llama: 5, Mistral: 3, Qwen: 5). Differences between rows mix model generation quality with judge strictness.

3 Local Models Llama, Mistral, Qwen
4 RAGAS Metrics Faithfulness & Relevancy
5.1s – 6.4s Median Inference Latency

Offline RAG with Evaluation Benchmark

An offline Retrieval-Augmented Generation (RAG) system with an automated evaluation pipeline for comparing different language models. The project uses RAGAS to evaluate generated answers across Faithfulness, Answer Relevancy, Context Precision, and Context Recall, helping analyze answer quality and retrieval performance.

Python FastAPI Ollama FAISS RAGAS LangChain
GitHub Repo
02 — Conversational AI
E-Commerce AI Assistant

E-Commerce AI

A smart shopping assistant integrated directly into the storefront, providing personalized recommendations and answering product-specific inquiries in real-time.

React TypeScript Vite OpenAI
hub Automation Systems Preview
03 — Backend Workflows

Automation Systems

Custom workflows connecting disparate business tools to streamline data entry, communication, and reporting processes with minimal human intervention.

n8n REST APIs Airtable Gmail API

Experience the tech.

Interact with the conversational AI assistant to explore my technical capabilities, project architectures, and engineering philosophies.

Try My AI Assistant arrow_forward

ACHIEVEMENTS

Things I've Built & Solved

A snapshot of my hands-on experience, problem-solving practice, and participation in competitive development challenges.

Hackathon Logo

Mini Hackathon

Participated in a mini hackathon, gaining hands-on experience in building and presenting a project within a limited timeframe.

Codeforces Logo
30+

Problems Solved on Codeforces

Consistent competitive-programming practice focused on problem solving, algorithms, and logical thinking.

LeetCode Logo
25+

Problems Solved on LeetCode

Regular practice with data structures, algorithms, and coding problems through LeetCode.

Contact


Let's build together.

Whether you need to architect a production RAG system, orchestrate complex backend workflows, or build intelligent agents, feel free to reach out.

location_on Dhaka, Bangladesh