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Hi, i'm Vyacheslav Vandalovich

About me

I'm 19 years old developer from Ukraine. I spent last 6 years of my life learning programming. First i did this for fun, and later i decided this will be my career.
I have learned a lot of technologies and programming languages, but most of my experience is with C#, Java and JavaScript/TypeScript. This page contains projects that i'm most proud of.

Java

Contact info:
E-Mail: jumpergooog@gmail.com
Telegram: @slyveek
Discord: @javajumper




My Portfolio

ChatApp (Internal name)

About:

A chat application inspired by Discord, focused on community features.
Includes chat, community pages, and an admin blog.
Developed in PHP + MySQL, with SSR enhanced by HTMX and styled with TailwindCSS. Built for a university coursework project.

Links
Source Code

Tech Stack

PHP
MySQL
HTMX
TailwindCSS

Screenshots

Blog Chat

Password11 Manager

About:

A secure password manager with a modern interface and optional encrypted synchronization.
Allows passwords to be categorized with tags.

Built using WinUI 3 in C#
Cloud sync server built with ASP.NET + PostgreSQL
Developed for a university coursework project

Links
Source Code Download

Tech Stack

#C
WinUI 3
ASP.NET
PostgreSQL
Windows 11

Screenshots

Password Manager Home Password Add

ManageNEMT Mobile

About:

A mobile app designed for non-emergency medical transportation (NEMT) drivers.

Features:

  • - Displays schedules for current and upcoming shifts
  • - Shows trip details (time, addresses)
  • - Real-time dispatcher updates + driver tracking

Initially built with raw React Native, later migrated to Expo.

My responsibilities:

  • - Developing and testing the app
  • - Integrating with internal dispatcher system + external services (Firebase Cloud Messaging, Sentry, Google Maps/Apple Maps)
  • - Publishing to App Store and Google Play Store

Links
App Store Google Play Company website

Tech Stack

React Native
Expo
Firebase
TypeScript

Screenshots

NEMT 1 NEMT 2 NEMT 3



Side projects

ElectroCart (Unity)

About:

Video game made for a local competition. Inspired by the mobile game Bad Piggies, this sandbox game allows players to build vehicle contraptions using various electrical components with the goal of reaching the finish line.

Links
Source Code Download a Demo (Windows)

Tech Stack

Unity
#C

Screenshots

BuilderGame 1 BuilderGame 2

RC Car with chemical delectors

About:

A project created for the Hack the FICT Hackathon.
Our team developed a remote-controlled car equipped with a camera for control and detectors for different chemical compounds like CO2/NH3/Alcohol and other stats like temparature and humidity.

My responsibilities:

  • - Engineering the RC control station hardware
  • - Developing station software (controls, sensor data, video streaming)
  • - Creating firmware for the ESP32 microcontroller

Links
Article about the hackathon
(Ukrainian)

Tech Stack

Raspberry Pi
ESP32
++C
Python

Photos

Minecraft Modding

Sometimes when i have spare time i develop mods for Minecraft.
I focus on mostly minor tweaks to improve player experience or features that can be implemented purely on game client without server modification
I also contributed into countless other mods. In three years my mods accumulated almost two million downloads on different platforms

Links
Curseforge
Modrinth

Tech Stack

Java
Fabric
Spongepowered Mixin

Photos

Customizable cursor
Action wheel
Simple shader-pack with stylized fog and shadows