Andrii

Andrii Osetskyi

Junior .NET Backend Developer

Novoiavorivsk, Lviv, Ukraine
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)

GitHub: https://github.com/AndreyDot
Linkedin: [open contact info](look above in the "contact info" section)

Projects:
Task Management API:
GitHub: https://github.com/AndreyDot/TaskManagement

• Developed REST API for task and user management
• Implemented JWT authentication and role-based authorization
• Applied Clean Architecture and CQRS with MediatR
• Used Entity Framework Core with PostgreSQL
• Added validation and global exception handling

Profile
Junior .NET Backend Developer with experience building REST APIs using C#, ASP.NET
Core Web API, and Entity Framework Core. Contributed to a real-world team project
(Streetcode) in a Scrum environment with 9 developers, implementing JWT
authentication, role-based authorization, CQRS with MediatR, validation with
FluentValidation, and PostgreSQL integration. Completed the SoftServe IT Academy
C#/.NET Developer program and focused on backend development, clean architecture,
and scalable API design.

Skills
Programming Languages: C#, JavaScript, HTML5, CSS3
Frameworks & Libraries: .NET Core, ASP.NET Core Web API, Entity Framework Core,
MediatR, AutoMapper, FluentValidation, Bootstrap
Authentication & Authorization: JWT, ASP.NET Identity
Databases: MS SQL Server, PostgreSQL
Tools: Visual Studio, Git, GitHub, Postman
Concepts: OOP, SOLID, REST API, CQRS

Experience
Streetcode Project (SoftServe IT Academy, in cooperation with Ministry of Education of
Ukraine)
Role: .NET Backend Developer
Period: May 2025 – Jun 2025
Team size: 9 developers (Agile/Scrum)
• Developed REST API endpoints for admin content management
• Implemented CQRS pattern using MediatR commands and handlers
• Added DTO validation using FluentValidation
• Implemented role-based authorization with ASP.NET Identity
• Created and applied Entity Framework Core migrations
• Wrote unit tests for business logic using NUnit and FluentAssertions
• Participated in code reviews, sprint planning, and daily stand-ups

Technologies: C#, .NET Core, ASP.NET Core Web API, Entity Framework Core, MediatR,
AutoMapper, FluentValidation, NUnit, MS SQL Server, GitHub, REST API

Education
Master’s Degree in Computer Science (Sep 2023 – Dec 2024)
Specialization: Computer Ecological-Economic Monitoring
Lviv Polytechnic National University

Bachelor’s Degree in Computer Science (Sep 2019 – Jun 2023)
Specialization: Computer Science
Lviv Polytechnic National University

Languages
Ukrainian: Native
English: B1