Software Developer · Serbia (EMEA)

Bogdan
Janjic.

IT student building Android apps, Linux tools, and system software. Five years on Arch Linux. Comfortable in fully distributed environments.

View ScreenWatcher GitHub
Kotlin ■ Python ■ Arch Linux ■ Docker ■ C / C++ ■ Java ■ Android ■ QEMU / KVM ■ Bash ■ Wireshark ■ nmap
Kotlin ■ Python ■ Arch Linux ■ Docker ■ C / C++ ■ Java ■ Android ■ QEMU / KVM ■ Bash ■ Wireshark ■ nmap
Featured Project

Screen
Watcher.

Android Kotlin SDK 26-34 Pixel Detection Foreground Service
Kotlin
View on GitHub

How it works

1

Select a Region

Draw a selection box over any part of your screen using a full-screen overlay. No root required.

2

Grant Permission

Grant screen capture permission when prompted. No personal data is stored; the app only reads pixel values.

3

Monitor in Background

A foreground service captures the region every second and compares pixel values frame to frame, surviving the app being closed.

4

Alarm on Change

When enough pixels shift, the alarm fires. Stop or recapture directly from the persistent notification.

Open Source ■ 5+ Years Linux ■ Arch BTW ■ Terminal First ■ Distributed Work ■ Building in Public ■ Self-Hosted Everything
Open Source ■ 5+ Years Linux ■ Arch BTW ■ Terminal First ■ Distributed Work ■ Building in Public ■ Self-Hosted Everything
More Tools

Built for
the terminal.

CLI utilities and system tools written in Python. Each solves a real problem from the Linux command line. Live data pulled from GitHub.

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C# ■ Java ■ Kotlin ■ C / C++ ■ Python ■ PHP ■ SQL ■ HTML ■ JavaScript ■ Go ■ Rust ■ Bash
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C# ■ Java ■ Kotlin ■ C / C++ ■ Python ■ PHP ■ SQL ■ HTML ■ JavaScript ■ Go ■ Rust ■ Bash
■
Technical Stack

What I work with.

Primary Languages
C#, Java
Kotlin, C / C++
Active / Building
Python, PHP
Go, Rust
Linux Distros
Arch, Ubuntu
Kali, Parrot OS
Containers
Docker, Podman
LXC / LXD
Virtualisation
QEMU / KVM
Full CLI provisioning
Databases
SQL, MySQL
Relational design
CLI and Tools
pacman, apt
systemctl, Git
Security Lab
Wireshark, nmap
Burp, mitmproxy
About

I'm an IT student based in Serbia with a strong foundation in object-oriented programming, algorithms, databases, and computer networks.

Over five years running Linux as my primary OS, progressing from Ubuntu through Kali and Parrot OS to Arch Linux, with hands-on daily use of Docker, Podman, QEMU/KVM, and LXC containers.

Self-motivated, independent, and comfortable in fully distributed work environments. My primary languages are C#, Java, Kotlin, and C/C++, with active Python development and Go and Rust toolchains always close at hand.

5+
Years on Linux
4
Open source tools
10+
Active Technologies
Serbia (EMEA) ■ Available for Remote Work ■ Open to Opportunities ■ Arch Linux BTW ■ Building Cool Things
Serbia (EMEA) ■ Available for Remote Work ■ Open to Opportunities ■ Arch Linux BTW ■ Building Cool Things