Nirbhay-Kumar-Developer

Hi there, I’m Nirbhay-Kumar-Developer! 👋

I am a Class 7 student and mobile enthusiast based in Nawada region of Bihar, India. I specialize in building high-performance native tools, Android applications, and custom terminal automation. All my development happens on mobile devices using Termux, proving that powerful software doesn’t require expensive desktop setups.

My Tech Stack & Environment

Languages & Frameworks

Tools & Android Internals

System-Level Automation: Experienced with using Shizuku via CLI rish scripts to safely manage Android permissions and bridge the gap between Termux and native Android APIs.

Featured Projects

`mkapk` — Native C++ Incremental Android Build System

An ultra-optimized, native C++ Android Build System designed specifically for the Termux environment to build Android APKs.

Key Achievement: Reached highly optimized incremental build speeds (down to ~5.79-10 seconds) by refining build trees and utilizing lightweight C/C++ architectures.
Repository: https://github.com/Nirbhay-Kumar-Developer/mkapk
Tech used: C++, Shell, Java, Android Build Tools

All-in-One Educational Android App “Heurily”

A robust, feature-rich study suite designed for comprehensive learning and student productivity.

Repository: https://github.com/Nirbhay-Kumar-Developer/Heurily
Features: Multi-subject formula database, automated custom test generator, interactive math quiz mode, multi-profile support, digital writing board, and a built-in note-taker and calculator.
Tech used: Java, Android SDK

Core Interests & Focus

Advanced Mathematics: Passionate about Number Theory, Geometry proofs, and Mathematical Induction.
Low-Level Android Mechanics: Tweaking, optimizing, and building lightweight binaries that bypass traditional mobile IDE resource overhead.

My GitHub Stats

My Mobile Dev Setup

Terminal: Termux with custom shell configuration including optimized aliases, functions, and build system integration
Editors: nano and Code Studio (Android app) for writing efficient code on the go
Build Integration: Direct integration with Android SDK/NDK and custom build tools within Termux environment

“Constraints drive innovation. Building native tools on a phone proves you don’t need a heavy desktop setup to write great software.”

Get in Touch

I’m open to collaboration, feedback, and discussing ideas about mobile development, low-level Android mechanics, or mathematics. Feel free to reach out!

📧 Email: dev.nirbhaykumar@gmail.com

Last updated: 2026-06-18