Valentyn

Valentyn Lieshchuk Košice, Slovakia
I [open contact info](look above in the "contact info" section)
# [open contact info](look above in the "contact info" section)
§ LeV1ne1111
.NET Backend Developer ð valentyn-lieshchuk-2b89a3299/

Profile
I am a graduate of the Bachelor’s program Intelligent Systems at the Technical University of Košice
(2025) and currently pursuing a Master’s degree. I focus on backend development in .NET (C#), web
application architecture, and AI-assisted systems, and I am seeking a remote part-time or internship
position to gain practical experience.

Technical Skills
Backend ASP.NET Core, REST APIs, Entity Framework Core, MVC, Clean Architecture
Languages C#, Python, C (basic)
Databases MS SQL Server, PostgreSQL, MongoDB
AI / Data scikit-learn, Pandas, NumPy, sentiment analysis, data processing
Tools Git, Postman, Swagger/OpenAPI, Docker (basic), xUnit

Projects
2024 Mobile App for Diabetes Detection — .NET MAUI, XAML, Python. Implementation of
a Naive Bayes model for diabetes risk estimation. Design of a responsive UI and integration
of a Python backend.
2026 CityConnect — contributor to the development of an AI-powered web/mobile platform
for collecting and analyzing citizen feedback in urban environments. Participated in
backend and system development of features including interactive issue reporting, AI-
based sentiment analysis, issue prioritization, and automated severity classification based
on user interactions. Worked with modern web technologies and collaborated within a
multidisciplinary development team.
2026 BreamStudy (breamstudy.com) — founder and technical lead of an EdTech startup focused
on simplifying tutor discovery and session booking for students. Led project architecture
and MVP planning, coordinated frontend and design workflows, defined product structure
and development roadmap, and implemented backend services and booking system using
.NET, React, PostgreSQL, and FullCalendar integration.

Education
2022 – 2025 Bachelor’s Degree – Intelligent Systems, Technical University of Košice.
2025 – 2027 Master’s Degree – Intelligent Systems, Technical University of Košice.

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 Experience
03/2026 – .NET Backend Developer (Commercial Experience) Developing and maintaining
Present backend services using ASP.NET Core and C. Working with MongoDB for data storage and
management, implementing REST APIs, and contributing to backend feature development.
Testing API endpoints with Postman and collaborating on improving application reliability
and performance.

Languages
Slovak Advanced
English Intermediate (technical communication)

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