Костянтин

Trotskyi Kostiantyn
Email: [open contact info](look above in the "contact info" section) | Phone:

Professional Summary

Full-stack developer with experience in creating both web and desktop applications.
I work with JavaScript/TypeScript stack on Node.js, Express, React, and Next.js,
using Redux for state management and Prisma for interacting with SQL-type
databases. I have experience in developing commercial projects (one sold, another
in development) and my own technical solutions.

At the desktop development level, I work with C++, C#, .NET (6/8) and Windows
Forms/WPF, and I also have experience creating educational projects in Unreal
Engine 5. I actively use Git and GitHub for version control and teamwork.

Core skills & Technologies

Web Development: JavaScript, TypeScript, Node.js, Express, React, Next.js, Redux,
Tailwind CSS, Prisma, REST API, EJS, JWT, Axios
Databases: SQL, MySQL, SQLite
Desktop Development: C++, C#, .NET 6/8, Windows Forms, WPF, Unreal Engine 5
Other: PHP (basic level), Git/GitHub, JSON, API integration, Async/Await
Languages: Ukrainian (Native), English (B1)

Work history

Full-Stack Developer — “Jumanji” Platform
Freelance / Personal Project
Jan 2024 – Dec 2024

 Developed a fully functional web platform for ordering food and drinks with
client, operator, and administrative sections.
 Front-end: built on React + TypeScript + Redux, using Next-like routing
architecture.
 Back-end: implemented on Node.js (Express + TypeScript) with Prisma ORM
for interacting with the MySQL database, including schemas for users, orders,
and menu items.
 Developed a REST API with JWT authorisation and a role system (‘client’,
“operator”, ‘admin’).
  Optimised query logic and database structure for faster order processing.
 Integrated a Telegram bot (Node.js + Telegraf) to notify operators of new
orders and update statuses in real time.
 Used Git/GitHub for version control and maintaining separate repositories:
JumanjiFront — client side
JumanjiBeck — server logic and API
JumanjiBOT — Telegram bot for operators
 Ensured consistent architecture and code structure across all system
components.

Education
Oleksandriya Polytechnic College Bachelor’s Degree in Software Engineering,
Specialty 121 (2022 – 2026)