Олександр

ALEXANDER OKOMANUK
C# BACKEND DEVELOPER

CONTACT PROFILE
[open contact info](look above in the "contact info" section) C# Backend Developer with 2+ years of experience in designing and
developing scalable, high-performance web applications using .NET and
[open contact info](look above in the "contact info" section) ASP.NET Core. Strong expertise in building maintainable backend architectures
following SOLID principles and clean architecture practices. Experienced in
Odesa, Ukraine working with relational databases including MS SQL Server, MySQL, and
MariaDB using Entity Framework Core. Proficient in containerizing applications
Telegram with Docker, designing and documenting RESTful APIs using
Swagger/OpenAPI, and delivering reliable, testable, and production-ready
solutions tailored to business needs.
EDUCATION

2023-2025
ODESА POLYTECHNIC
WORK EXPERIENCE
NATIONAL UNIVERSITY
Master of Information B2B Electronics Marketplace 2025- 2026
Systems and Technology Backend Developer
Development of a scalable B2B e-commerce platform for electronics
2019-2023
distribution and wholesale management. Implemented product
ODESА POLYTECHNIC
catalog management, category hierarchy, filtering system, image
NATIONAL UNIVERSITY processing pipeline, and bulk import tools (Excel/JSON). Designed
Bachelor of Information
RESTful APIs, role-based access control, and integrated search and
Systems and Technology currency services to support high-volume business operations.

SKILLS Multiplayer Game Server (GTA V Roleplay Platform) 2024-2025
Fullstack Developer
C#, .Net, ASP.NET Development of a multiplayer game server infrastructure including
MSSQL, MySQL, MariaDB gameplay logic, player management systems, real-time
synchronization, and custom server-side modules. Implemented
EF Core, Dapper, Redis scalable event-driven architecture, database integration, and
Unity, Rage API optimized server performance to support large concurrent player
Docker, CI/CD activity.

Swagger, Nginx Mobile Online Casino Application 2024
Git, SOLID, DRY, KISS, GoF Backend Developer
Development of backend infrastructure for a mobile online casino
application built with Unity. Implemented user account management,
LANGUAGES game session logic, and API services for real-time interaction between
client and server. Designed secure and scalable RESTful services
Ukrainian - native (C1) using .NET, optimized database performance, and ensured stable
English - Intermediate (B2) operation under high concurrent user load.