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I'm Mihael Šegulja.

Software engineer, Linux tinkerer, and someone who likes figuring out how things work.

I build applications and APIs with C#/.NET and web interfaces with Angular and React. Outside of that, I enjoy building PCs, troubleshooting hardware and software, and tinkering with Linux and small home servers. I also play around with microcontrollers, electronics, and game development.

This is my little corner of the internet: things I've built, things I'm learning, and room for the occasional experiment.

[email][linkedin][github]

A few things I've built

Marx Weather Station ->

An IoT project for monitoring air quality, temperature and more using an ESP32 and BME680 sensor. It collects sensor data, sends it via MQTT to a backend service, stores it in a SQL Server database, and visualizes data for a given time period.

C# * ASP.NET * SQL Server * ESP32 * MQTT * RabbitMQ * HTML * CSS * JavaScript

Malwave ->

A 2D fast-paced wave-based arcade arena shooter where you fight off computer malware inside a neon cyberspace grid

Godot * C#

macrokeeb ->

Simple 10-key Arduino-based macropad with OLED screen and rotary encoder

C++ * Arduino Pro Micro * Arduino framework

[all projects ->]

What I work with

Mostly C#/.NET, SQL Server, Angular, and React for applications and web development.

For other projects: C/C++, Arduino and ESP32, Godot and raylib. I also tinker with Linux, scripting, PC hardware, and small home servers.

These are my usual tools, but I enjoy trying something new from time to time.

[more tools & technologies]

.NET

SQL Server

Angular

React

React Native

C++

Arduino

ESP32

raylib

Godot

Postman

RabbitMQ

Docker

Linux

Bash

Neovim

VS Code

Visual Studio

Rider

PlatformIO

A few things I'm proud of

WorldSkills Croatia 2023: 2nd place (silver) in IT System Administration discipline
Inova Mladi 2023: Bronze medal for macro keyboard
Innovation Fair Ivanić-Grad 2023: Silver medal for macro keyboard
Participated in Algebra Security Day Contest 2022
Participated in Hacknite 2.0 2021

[certificates & courses]

Oracle Cloud Infrastructure Certified AI Foundations Associate (2025)
Microsoft Applied Skills: Administer Active Directory Domain Services (2024)
Fortinet Certified Fundamentals Cybersecurity (2024)
Oracle Academy (2023)
- Java Foundations
- Java Programming
- AiML Artificial Intelligence with Machine Learning in Java
Cisco Networking Academy (2023)
- CCNA: Introduction to Networks
- CCNA: Switching, Routing, and Wireless Essentials
- CCNA: Enterprise Networking, Security, and Automation
IQRF Basics (2022)

[credly][microsoft learn][leetcode]