.NET Application Modernization & API Development by Leonardo Apollonio.NET Application Modernization & API Development by Leonardo Apollonio

.NET Application Modernization & API DevelopmentLeonardo Apollonio

Cover image for .NET Application Modernization & API Development

Modernize an existing .NET application or build a reliable API-backed feature without a risky rewrite.

You’ll get: • A focused technical assessment and implementation plan • Clean C#/.NET code and REST API work • Angular or React integration when needed • PostgreSQL or SQL Server support • Clear documentation and handoff

Best for legacy modernization, integrations, performance fixes, and new business-critical features.

Leonardo's other services

Cover image for Add a Full-Stack Feature to Your .NET Web App

Add a Full-Stack Feature to Your .NET Web App$750

Cover image for Build or Modernize a .NET REST API

Build or Modernize a .NET REST API$500

Starting at$500

Duration1 week

Tags

Angular

Azure

.NET

PostgreSQL

React

API

Backend Engineer

Fullstack Engineer

Application Modernization

Modernize an existing .NET application or build a reliable API-backed feature without a risky rewrite.

Best for legacy modernization, integrations, performance fixes, and new business-critical features.

Leonardo's other services

Add a Full-Stack Feature to Your .NET Web App$750

Build or Modernize a .NET REST API$500

$500