Hello, World

Sadik Mahmud_

I build robust, scalable backend systems that power great products — from high-throughput APIs to distributed microservices, always with clean code and performance at the core.

View My Work Get In Touch

01. About

Who I Am

I'm a backend software engineer with a passion for building systems that scale. I specialise in designing and implementing APIs, microservices, and database-driven architectures that handle real-world complexity.

My work lives deep in the stack — where performance tuning, concurrency, and reliability aren't optional. I care about writing code that other engineers enjoy working with and that systems administrators don't dread at 2 AM.

// currently focused on
Distributed systems & high-performance API design
AI-integrated backend pipelines with LangChain & LangGraph

When I'm not optimising queries or designing service boundaries, I'm exploring new technologies and contributing to open-source projects that matter.

Open to Work Remote Friendly Full-time / Freelance Dhaka, Bangladesh

Major Projects Built

Projects Shipped

API Uptime Record

∞

Coffees Consumed

02. Skills

Tech Stack

Core Development Stack

Node.js

Express.js

FastAPI

Python

Django

Next.js

PostgreSQL

MongoDB

MySQL

ASP.NET

AI & Machine Learning

TensorFlow

Scikit-learn

PyTorch

Pandas

LangChain

LangGraph

Other Languages & Technologies

C++

Java

JavaScript

Git

Docker

Google Colab

VS Code

Postman

Figma

03. Projects

Featured Work

⚡

Featured

01.

COSMOS-ITS

Built an AI-powered learning platform using LangGraph, OpenAI, Pinecone, FastAPI, and Supabase, featuring course-specific agents, personalized learning paths, adaptive quizzes, study planning, and grade prediction. Implemented JWT-secured authentication, semantic retrieval, and load-tested the platform with Locust for scalability.

FastAPI Pinecone MongoDB Next.js OPENAI API LangGraph

GitHub Live Demo

🧠

02.

Archon — AI-Powered Autonomous Coding Agent

Built a full-stack autonomous coding agent with a multi-agent architecture, hierarchical project planning, RAG-powered memory, semantic code search, real-time agent communication, and secure cloud-native deployment.

Django Next.js OpenAI Pinecone Redis Supabase Docker WebSockets JWT

GitHub Live Demo

🍔

03.

Khadok — Full-Stack Food Ordering Platform

Engineered a multi-role food delivery ecosystem featuring real-time order tracking, rider-consumer chat, map-based restaurant discovery, OSRM-powered routing, immersive 3D dine-in experiences, and bKash payment integration.

Node.js JavaScript Supabase Socket.IO Leaflet.js OSRM Three.js bKash API

GitHub Live Demo

04. Contact

Let's Connect

I'm currently open to backend engineering roles, freelance projects, and interesting technical conversations. If you have something exciting in mind, I'd love to hear about it.

Whether it's a quick question or a full project scope — my inbox is always open.

Available for new opportunities

✉

sadikmahmud01@gmail.com

www.linkedin.com/in/sadik-mahmud-b91949379/

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Codeforces

codeforces.com/profile/1nonlysadik