biisal@codeltix-dot-com

Avisek Ray

Database, Backend Design, Frontend Engineering and notes from the terminal.

I like to make things that help people using my programming skills. Also, I’m a freelancer. My goal is to keep learning, explore new technologies, and contribute to projects that make a real difference.

Read the blog Browse selected work

[email protected]

Latest Posts

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5/20/2026129 Reads

Understanding HMAC Internals Through Webhook Verification in Go

Exploring how webhook verification works in Go and breaking down the internals of HMAC signatures using only the standard library.

5/11/202688 Reads

LinkedIn is spamming to your device

LinkedIn is doing AED brute-force scanning

5/1/2026279 Reads

Become GOD of your system :)

Learn how Linux’s sudo works—from root privileges and setuid to secure, audited command execution. This step-by-step guide explains user UIDs, sudoers configuration, timestamp caching, fork‑exec flow, and logging best practices.

4/8/2026185 Reads

Done is better than perfect (ft. Gitalink)

This project took 1.5 years and a lot of messy learning.

Skills & Tools

Backend Development
Frontend Development
Database Architecture
API Design
System Optimization
Cloud Infrastructure

Python

TypeScript

Next.js

React

FastAPI

PostgreSQL

MongoDB

Redis

Docker

Git

Linux

AWS

Nginx

Languages

(Last 7 Days)

Go19.1%

TypeScript17.3%

JSON13.5%

C11.4%

Other11.0%

Selected Work

A smaller set of things worth opening after the writing.

Codeltix - Linux learnig platform with live terminal

01—full-stack

Codeltix - Linux learnig platform with live terminal

CodeLtix is a developer-centric platform built to simplify the journey of mastering Linux, full-stack development, and automation. From in-depth tutorials and real-world coding insights to free, open-access APIs, CodeLtix empowers developers to build, break, and grow with confidence—one command and project at a time.

full-stacklinuxgolangcli

View project

GODO - AI-Powered Todo Agent for the Terminal

02—TUI

GODO - AI-Powered Todo Agent for the Terminal

GODO is a terminal-based AI agent that leverages the free Gemini API to help users manage their tasks efficiently without the need for any browser or separate application. Its unique UI and fast, lightweight architecture make it an exceptional choice for developers and power users who prefer working in the terminal.

TUIAIAI-Agent