I will iwill develop, fix and optimize net apis and backend systems

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fabio_lsilveira
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fabio_lsilveira
Fábio SIlveira
iwill develop, fix and optimize net apis and backend systems
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iwill develop, fix and optimize net apis and backend systems
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iwill develop, fix and optimize net apis and backend systemsiwill develop, fix and optimize net apis and backend systemsiwill develop, fix and optimize net apis and backend systemsiwill develop, fix and optimize net apis and backend systems

About this gig

I am a professional .NET backend developer specialized in C#, ASP.NET Core, REST APIs and system integrations.

I help businesses build, fix and optimize secure, scalable and high-performance backend applications. Whether you need bug fixing, API integration, database connectivity or custom backend development, I can deliver clean and maintainable solutions tailored to your needs.

My services include:

  • .NET / ASP.NET Core development
  • REST API development and integration
  • Bug fixing and troubleshooting
  • SQL Server and database integration
  • Backend optimization and performance improvements
  • Authentication and authorization (JWT)
  • Clean architecture and maintainable code
  • Microservices and scalable backend solutions

Why work with me?

  • Clean and professional code
  • Clear communication
  • Reliable delivery
  • Focus on performance and scalability
  • Attention to detail

Please contact me before placing large or complex orders so I can better understand your requirements and provide the best solution for your project.

  • Programming language

    • C#

  • Frontend framework

    • Other

  • Backend framework

    • Other

Get to know Fábio SIlveira

Fábio SIlveira

Senior Software Engineer Consultant

  • FromPortugal
  • Member sinceMay 2026
  • Avg. response time1 hour

  • Languages

    English, Portuguese
Senior Software Engineer and Technical Consultant with 25+ years of experience delivering scalable backend systems, APIs, cloud solutions, and enterprise integrations. Specialized in .NET, Azure, Microservices, SQL Server, DevOps, and high-availability platforms for healthcare, banking, and ERP environments. I help businesses modernize systems, improve scalability, optimize performance, and solve complex technical challenges with reliable and maintainable solutions. Strong focus on backend architecture, system integration, cloud-native development, and enterprise-grade software quality.

My Portfolio

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