
João Soares
Porto, Portugal
Custom C# / .NET Full-Stack Development (APIs, Databases & Web Applications)
(0) Remote 4 months ago
50 $ - Per hour
I provide professional full-stack development services using C# and the .NET ecosystem, focusing on building scalable web applications, secure APIs, and high-performance database-driven systems.
With strong experience in backend architecture, database design, and API development, I develop reliable software solutions tailored to complex business requirements. My goal is to create systems that are robust, efficient, maintainable, and ready for long-term scalability.
Whether you need a new application built from scratch or improvements to an existing system, I can design and implement the necessary components to ensure performance, security, and stability.
My services include backend development, database architecture, API integrations, and full-stack web applications, always following modern software engineering best practices.
✔ Development of custom web applications using C# and ASP.NET Core
✔ Design and implementation of RESTful APIs and backend services
✔ Database design, optimization, and SQL development
✔ Integration with third-party APIs and external systems
✔ Development of secure authentication and authorization systems
✔ Creation of scalable backend architectures
✔ Performance optimization and system refactoring
✔ Debugging and troubleshooting existing applications
✔ Development of data-driven platforms and internal business systems
Backend
- C#
- .NET / .NET Core
- ASP.NET Core
- REST APIs
Databases
- Microsoft SQL Server
- Database design and optimization
- Stored procedures and complex queries
Frontend Integration
- HTML
- CSS
- JavaScript
- API-driven web interfaces
Development Tools:
- Git
- Visual Studio / JetBrains Rider
- CI/CD workflows
With strong experience in backend architecture, database design, and API development, I develop reliable software solutions tailored to complex business requirements. My goal is to create systems that are robust, efficient, maintainable, and ready for long-term scalability.
Whether you need a new application built from scratch or improvements to an existing system, I can design and implement the necessary components to ensure performance, security, and stability.
My services include backend development, database architecture, API integrations, and full-stack web applications, always following modern software engineering best practices.
✔ Development of custom web applications using C# and ASP.NET Core
✔ Design and implementation of RESTful APIs and backend services
✔ Database design, optimization, and SQL development
✔ Integration with third-party APIs and external systems
✔ Development of secure authentication and authorization systems
✔ Creation of scalable backend architectures
✔ Performance optimization and system refactoring
✔ Debugging and troubleshooting existing applications
✔ Development of data-driven platforms and internal business systems
Backend
- C#
- .NET / .NET Core
- ASP.NET Core
- REST APIs
Databases
- Microsoft SQL Server
- Database design and optimization
- Stored procedures and complex queries
Frontend Integration
- HTML
- CSS
- JavaScript
- API-driven web interfaces
Development Tools:
- Git
- Visual Studio / JetBrains Rider
- CI/CD workflows
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