Python
FastAPI, aiogram, scalable backend & bots
software developer
Vladyslav Kotiushka
I am a passionate Software Developer with strong expertise in building scalable backend systems, automation tools, and cross-platform applications. I specialize in creating efficient, high-performance solutions using Python, C#, Java, and cloud technologies, with a focus on clean architecture, reliability, and excellent user experience.
available for work
skills
C#
WinForms, WPF, Ranorex test automation
Java
Android, Spring Framework
AWS
Cloud infrastructure & deployment
SQL
Database design, optimization & modeling
HTML / CSS
HTML, CSS, semantic & responsive interfaces
projects
personal brand
Portfolio Platform
A fast personal website with a restrained visual system, clear contact flow, and project storytelling built for first impressions.
HTML
CSS
Python
telegram bot
Azei MMORPG
A massively multiplayer Telegram MMORPG This is my biggest personal project. The architecture could be better (separate DB layer, migrations, tests, env config), but it was a great way to learn async Python, Aiogram, SQLite, and game design. designed for a large number of concurrent players. Includes real-time PvP, clan wars, locations, NPCs, and AI opponents. The project contains over 9,000 lines of Python code, over 160 aiogram handlers, and asynchronous operations with SQLite.
Python
Aiogram / Aiohttp
SQLite
android app
NotesPro
A clean and functional note-taking application built with the MVP architectural pattern. Supports creating, editing, and managing personal notes with a simple, intuitive interface focused on usability and code maintainability.
Java
Android
Room
M. Design
MOBILE + WEB APP
NexNation
An internal onboarding application developed for Nexus AG / Nexus Swisslab GmbH. Designed and maintained to help new trainees navigate the onboarding process. Features centralized access to important documents, real-time progress tracking, automatic HR status updates, useful contacts, and internal feedback system.
C#
ASP.NET
PostgreSQL
Mobile
desktop application
Lauris Log Analyzer
Advanced desktop log analyzer for Lauris / CheckID Laboratory Information System (LIS) developed by Nexus Swisslab GmbH for managing lab data and patient identification. . Seamlessly opens huge log files with excellent performance, supports 4 log formats, and provides smart filtering by level, time, and custom rules. Features beautiful multi-theme interface designed for heavy daily use.
C#
WPF
Regex
web application
Developer Tools Hub
A compact toolkit for engineers with saved utilities, lightweight automation, and interface details designed for repeated use.
Node.js
Automation
Design