Open for freelance work

I'm sepehr h.i

Security Developer · Full-Stack Architect · Privacy Advocate
Building open-source tools that protect digital freedom.

5+
Years Active
15+
Projects
Coffee Cups

Projects

Security-focused tools built for real-world use

🔐
Razban Messenger
Anti-Filtering · Secure
Cloudflare Workers D1 Kotlin Backblaze B2

A lightweight, filtering-resistant messenger. All processing happens on Cloudflare edge, files stored on Backblaze B2, with emergency relay via Google Apps Script for maximum availability under censorship.

🛡️
Dezh Messenger
Isolation · Sandbox
Android WebView Kotlin

An isolated, secure environment for running messaging apps. Wraps messengers like Eita, Rubika, and Bela in a protected WebView sandbox — preventing unauthorized access to your device data.

🔒
RazNegar
Encryption · Stealth
AES-256-GCM PBKDF2 Android

File encryption tool with stealth mode. Encrypt any file with AES-256-GCM, then disguise it as an ordinary image or video. Your data stays yours — even in plain sight.

🌐
Vyn
Social Network · Persian
Cloudflare Workers D1 Flask

A Persian-language social network built for performance and privacy. Serverless architecture on Cloudflare edge with real-time features, content moderation, and admin controls.

🦉
OwlBot
Telegram Bot · Automation
Python Telegram API AI Integration

A versatile Telegram bot powerhouse. AI chat, admin tools, media handling, and custom commands — all in one modular, extensible architecture. Deployed and running 24/7.

About

I'm a full-stack developer focused on building tools that protect user privacy and enable secure communication. From messaging platforms resistant to filtering to file encryption with stealth capabilities — every project is designed with real-world threats in mind.

My work spans from low-level system programming to modern web architectures. I believe open-source is the foundation of digital trust, and every line of code I write reflects that.

🐍
Python
☁️
Cloudflare
🤖
Kotlin
🔐
Cryptography
🌐
Web Dev
🐳
Docker

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