Ростислав

ROSTYSLAV BORYSENKO
SOFTWARE ENGINEER

CONTACT WORK EXPERIENCE
[відкрити контакти](див. вище в блоці «контактна інформація») Pixelcats 08/2024 - 12/2025
Full-Stack Developer (Part-time)
dev.rostyslav.borysenko@g Designed and implemented a backend system in Node.js/TypeScript
mail.com using Express.js and MongoDB. Developed a modular backend system
using NestJS with PostgreSQL.
Bratislava, Slovakia Designed and implemented MongoDB/Mongoose data models for
complex business entities. Designed and maintained data models, DTOs,
github.com/strukfit and entities, ensuring a clean architecture and type safety.
Built secure authentication and authorization flows using JWT,
[відкрити контакти](див. вище в блоці «контактна інформація») Passport.js, and OAuth 2.0, enabling multi-method login and role-based
av-borysenko-49abb0314/ access control.
Implemented middlewares for authentication (JWT), request validation,
SKILLS database connection handling, and error logging.
Collaborated with cloud services via AWS SDK, including secure storage
JavaScript, TypeScript and retrieval operations.
Collaborated on modular API architecture, separating controllers, routes,
C++, Java
and validation logic for maintainability and scalability.
React, React Native Built a responsive web application using React.
Designed and implemented a cross-platform mobile applications using
Node.js, Express.js
React Native and Expo, delivering optimized performance for both iOS
Spring Boot, Spring Web, and Android.
Spring Data JPA Designed and implemented responsive UI components with Tailwind
CSS and Gluestack-UI to ensure consistent and adaptive user
RESTful API, GraphQL experiences.
Databases (SQLite, MySQL, Integrated the frontend with a custom REST API backend.
Applied modular design principles for maintainable code, separating UI,
MongoDB)
API, and business logic layers.
Docker, Docker Compose Integrated Firebase Firestore for real-time data synchronization.
Implemented Firebase Cloud Functions for secure server-side logic,
CMake
including data validation, processing, and automated notifications.
Qt, QML Managed secure backend communication with callable Firebase
functions and optimized Firestore queries for performance.
Git, Github, Gitlab
Freelance 02/2024 - 08/2024
LANGUAGES Freelance Developer
Designed and implemented a cross-platform mobile solution empowering
Slovak - A1 beauty salon professionals to optimize client scheduling workflows,
English - B2 improving operational efficiency and reducing booking errors.
Ukrainian - Native Utilized Firebase Authentication for secure user account management
Russian - Native and access control.
Integrated Firebase Realtime Database via REST API using C++ and Qt
Framework for robust data storage and retrieval.
EDUCATION
Built a responsive and user-friendly GUI with QML, ensuring a smooth
user experience across devices.
S. Kuznets KNUE (2021 - Deployed cloud functions using Google Cloud Run and incorporated
2025) BSc (Hons), Computer Firebase Admin SDK for server-side operations.
Science Scheduled automated backend tasks with Google Cloud Scheduler to
handle periodic processes and updates.
STRENGTHS PROJECTS
Teamwork Task Management System: Developed a full-stack task management
Problem-solving skills system with containerized deployment and environment-based
configuration. Built a React (Vite + TypeScript) frontend with Tailwind CSS
Technical expertise and Axios for API communication. Designed a Spring Boot backend with
Analytical mindset RESTful API, using Java 17, Maven, and PostgreSQL. Implemented
Dockerized setup for both development and production environments
Ability to learn with Makefile automation. Enabled hot-reload for both frontend and
Attention to detail backend in development mode. Created environment-based
configurations with .env management and docker-compose
Creativity
orchestration. Focused on maintainability, scalability, and developer
productivity. Tech stack: React (Vite), React Router, React Query,
TypeScript, Tailwind CSS, Axios, Eslint & Prettier, Spring Boot, Spring
Web, Spring Data JPA, PostgreSQL Driver, Lombok, Java 17+, Maven,
REST API, Docker & Docker Compose, Makefile.
Real-Time Screen Text Translation Tool: Designed and developed a
desktop application that captures a selected screen area and translates its
text in real-time. Integrated multiple translation APIs (Google Translate,
LibreTranslate, DeepL) to ensure high accuracy and performance. Built
with C++ and Qt Framework, using QML for a modern GUI. Implemented
offline translation support and seamless cloud connectivity via REST APIs.
Managed builds with CMake.
Cross-Platform System Information Viewer: Created a desktop
application for Windows and Linux to display detailed technical system
information with diagrams. Utilized Qt Framework, NVML interface, AMD
ADLX library, Windows API, standard OS libraries, and multithreading.
Built using CMake and Qt VS Tools for Visual Studio 2022.
C++ Client-Server Communication App: Developed a console-based
application for communication between server-connected clients using
Boost.Asio for networking and CMake for builds.
Multi-Function Clock Application: Implemented a desktop app featuring
an alarm clock, timer, stopwatch, and world clock. Developed with Qt
Framework and Qt VS Tools for Visual Studio 2022.
Application Volume Controller: Built a desktop utility to control the
volume of any selected application using a hotkey. Leveraged Qt
Framework, Windows APIs, process management, and audio session
control.
Product Management Coursework Application: Developed a desktop
application to manage product information, categories, and
manufacturers using SQLite3 for data storage, WxWidgets for GUI, and
CMake for builds.
Client Management Mobile App: Created a Java-based Android
application to store client details and implemented birthday reminders.
Built with Android Studio and AndroidX libraries.
Discord Music Bot: Developed a Discord bot for music playback from
YouTube playlists, Spotify playlists, and direct links. Implemented
advanced queue management, playback controls (play, pause, skip, loop,
shuffle), and seek functionality. Optimized asynchronous command
handling with asyncio. Technologies: Python, discord.py, yt_dlp, spotipy.