Full-Stack & Backend .NET Development with C# by Oles RiaboiFull-Stack & Backend .NET Development with C# by Oles Riaboi
Full-Stack & Backend .NET Development with C#Oles Riaboi
Cover image for Full-Stack & Backend .NET Development with C#
Looking for a reliable .NET engineer to design, build, or modernize your software solutions? I deliver clean, robust, and scalable backend services and full-stack applications tailored to your business needs using modern C# and .NET technologies.
Whether you need a brand-new Web API, microservices architecture, performance optimization, or full-stack web features, I ensure your application is secure, maintainable, and high-performing.

What I Can Help You With:

Backend & Web API Development: Secure, scalable RESTful & Minimal APIs with authorization, authentication, and comprehensive logging.
Database & ORM Architecture: Efficient data modeling, LINQ query optimization, and integration with PostgreSQL or SQL Server using EF Core or DevExpress XPO.
Full-Stack Web Applications: Interactive, modern web user interfaces using Blazor (Server / WebAssembly) or Razor Pages.
System Integration & Third-Party APIs: Connecting payment gateways, AI services (OpenAI, custom LLM integrations), cloud storage, and external SaaS platforms.
Performance Tuning & Code Refactoring: Profiling slow queries, fixing memory/CPU bottlenecks, and restructuring legacy code bases into Clean Architecture.

Technical Stack & Tools:

Languages & Core: C#, .NET, ASP.NET Core, Minimal APIs.
Data Access & Storage: EF Core, DevExpress XPO, PostgreSQL, SQL Server, Redis.
Architecture & Design: Clean Architecture, CQRS, Dependency Injection, SOLID principles, Repository Pattern.
DevOps & Integration: Docker, CI/CD pipelines, Git, RESTful APIs, Swagger/OpenAPI.

What's Included (Scope of Work):

Discovery & Technical Planning: Reviewing requirements, defining API endpoints, and database schema design.
Core Development: Writing clean, well-tested, and maintainable C# code following best practices.
Integration & Testing: Seamless database and third-party service connection with unit/integration testing.
Documentation & Handoff: Clear API documentation (Swagger/Postman) and smooth deployment setup.
Contact for pricing
Duration1 week
Tags
ASP.NET Core
DevExpress
.NET
AI Developer
REST API
Web Developer
Blazor
LINQ
T-SQL
Service provided by
Oles Riaboi Kraków, Poland
1
Followers
Full-Stack & Backend .NET Development with C#Oles Riaboi
Contact for pricing
Duration1 week
Tags
ASP.NET Core
DevExpress
.NET
AI Developer
REST API
Web Developer
Blazor
LINQ
T-SQL
Cover image for Full-Stack & Backend .NET Development with C#
Looking for a reliable .NET engineer to design, build, or modernize your software solutions? I deliver clean, robust, and scalable backend services and full-stack applications tailored to your business needs using modern C# and .NET technologies.
Whether you need a brand-new Web API, microservices architecture, performance optimization, or full-stack web features, I ensure your application is secure, maintainable, and high-performing.

What I Can Help You With:

Backend & Web API Development: Secure, scalable RESTful & Minimal APIs with authorization, authentication, and comprehensive logging.
Database & ORM Architecture: Efficient data modeling, LINQ query optimization, and integration with PostgreSQL or SQL Server using EF Core or DevExpress XPO.
Full-Stack Web Applications: Interactive, modern web user interfaces using Blazor (Server / WebAssembly) or Razor Pages.
System Integration & Third-Party APIs: Connecting payment gateways, AI services (OpenAI, custom LLM integrations), cloud storage, and external SaaS platforms.
Performance Tuning & Code Refactoring: Profiling slow queries, fixing memory/CPU bottlenecks, and restructuring legacy code bases into Clean Architecture.

Technical Stack & Tools:

Languages & Core: C#, .NET, ASP.NET Core, Minimal APIs.
Data Access & Storage: EF Core, DevExpress XPO, PostgreSQL, SQL Server, Redis.
Architecture & Design: Clean Architecture, CQRS, Dependency Injection, SOLID principles, Repository Pattern.
DevOps & Integration: Docker, CI/CD pipelines, Git, RESTful APIs, Swagger/OpenAPI.

What's Included (Scope of Work):

Discovery & Technical Planning: Reviewing requirements, defining API endpoints, and database schema design.
Core Development: Writing clean, well-tested, and maintainable C# code following best practices.
Integration & Testing: Seamless database and third-party service connection with unit/integration testing.
Documentation & Handoff: Clear API documentation (Swagger/Postman) and smooth deployment setup.
Contact for pricing