petrzik.dev

SOFTWARE ENGINEER

ABOUT ME

I'm a passionate software engineer with a strong interest in cybersecurity and software development. I'm currently pursuing a bachelor's degree in Information and Network Security at the University of Hradec Králové, building on my high school diploma in Information Technology - Cybersecurity. I have experience with various programming languages and technologies, and I enjoy contributing to open-source projects and participating in CTF competitions.

Languages

C/C++
TypeScript/JavaScript
C#
Kotlin
Java
PHP
HTML/CSS
Bash
SQL

Frameworks & Libraries

Next.js
React
Node.js
.NET
WordPress
Boost

Systems, Tools & Protocols

PostgreSQL
MariaDB
Git
CMake
Docker
Linux
Windows Server
IDA
ModBus
REST APIs

PORTFOLIO

Here you can find a selection of my work, ranging from web applications and mobile apps to desktop software and WordPress websites. Each project represents a unique challenge and an opportunity to create practical solutions that make a difference.

Complex E-Shop (Work in progress)

Complex E-Shop (Work in progress) project screenshot

A fully customized web platform designed for product catalog, e-commerce, blog, and more. This solution features a tailored editorial system, allowing seamless content management and user interaction.

TechTypeScript (Next.js), PostgreSQL
ClientStránský a Petržík, Pneumatické válce spol. s r.o.

Application for the shipping department

Application for the shipping department project screenshot

An Android application for managing delivery notes, product movements in stock, and searching for products

TechKotlin, JavaScript
ClientStránský a Petržík, Pneumatické válce spol. s r.o.

Food Ordering Web App

Food Ordering Web App project screenshot

A web-based application designed for employee meal ordering. It showcases available food options for each day, allowing employees to place orders effortlessly. The system automatically forwards orders to the food delivery service, streamlining the entire process.

TechPHP, MariaDB
ClientStránský a Petržík, Pneumatické válce spol. s r.o.

SIDE PROJECTS

Beyond client work, I enjoy building side projects, contributing to open source, and experimenting with new technologies. These projects represent my passion for continuous learning and innovation.

cathook

I've helped with the development of cathook, a training software for the GNU/Linux version of Team Fortress 2. My contributions include more features and fixing some bugs.

OSSContributionsCommunity+2
C, C++

Fedoraware

I've brought many new features to Fedoraware, a tool for cheating in video games. Added inovative features and new exploits.

OSSContributionsCommunity+2

Skvara

A cross-platform app for managing your money. You can track your income and expenses, create budgets and goals, manage debt between friends and more.

ExperimentalWebiOS+2
TypeScript, PostgreSQL

PlagueStealer

A basic proof of concept malware that steals login credentials for Plaguecheat.cc - a cheating for the game Counter-Strike: Global Offensive. This project was made to alert the developers of Plaguecheat.cc about the security issues.

MalwarePoCReverse Engineering+1

CONTACT

Feel free to reach out if you're interested in collaborating or have any questions about my work. I'm always open to discussing new projects and opportunities.