Rodrigo Koch, Software Developer in São Paulo - State of São Paulo, Brazil
Rodrigo Koch

Software Developer in São Paulo - State of São Paulo, Brazil

Member since June 24, 2012
Rodrigo is a Microsoft Certified Professional in .NET Web Applications with C#. His dual nationality makes him a valuable resource as developer in both Germany and Brazil. He has strong development and troubleshooting skills with a portfolio to match; his extensive list of well-known clients includes Nestlé, Chartis Insurance, and Casio Brazil. Today, he works at Samsung Latin America.
Rodrigo is now available for hire



  • ASP.NET, 6 years
  • C#, 6 years
  • SQL, 5 years
  • T-SQL, 5 years
  • Visual Basic .NET (VB.NET), 3 years
  • ASP.NET MVC, 2 years
  • Entity, 2 years
  • jQuery, 2 years


São Paulo - State of São Paulo, Brazil



Preferred Environment

Microsoft Visual Studio .NET

The most amazing...

...project I've tackled is the refactoring of a large-scale Windows system (to web) with minimum damage to both system performance and user experience.


  • .NET Developer

    2012 - PRESENT
    Samsung Data Systems
    • Improved existing Samsung core systems.
    • Provided technical support to employees by troubleshooting issues.
    • Developed a variety of new systems.
    Technologies: C#, SQL Server
  • .NET Developer

    2011 - 2012
    • Developed tool for daily export of large data from SQL Server to ERP. Used Stored Procedures and Cursor.
    • Developed financial system while at Nestlé (integrated into WCF).
    • Worked on transferring of invoices and product requests for web services.
    • Performed Database and Software Tuning, UML Documentation (Use Cases and Diagrams), Specification and Database Modeling.
    • Worked alongside diverse team which included members from India, China, and the Philippines.
    Technologies: C#, SQL Server, UML, jQuery, JavaScript, CSS, HTML
  • .NET Developer

    2011 - 2011
    PRODESP (Government)
    • Worked on database tuning and development of internal systems.
    • Improved refactoring, modeling, and prototyping of projects.
    Technologies: C#, SQL Server, Oracle, ASP.NET, jQuery, MySQL, JavaScript, CSS, HTML, UML
  • .NET Developer

    2009 - 2011
    INSPIRIT Systems
    • Worked on prototyping for various internet banking clients.
    • Developed intranets for various university clients.
    • Performed use-case testing and UML, as well as data modeling and implementation of logistics systems.
    Technologies: C#, SQL Server, ASP.NET, jQuery, MySQL, JavaScript, CSS, HTML, UML
  • .NET Developer

    2006 - 2009
    • Developed eCommerce application.
    • Contributed to management systems, including law magazine's web system.
    • Maintained CASIO Brazil website.
    • Worked on modeling and documentation.
    Technologies: C#, VB.NET, SQL Server, ASP.NET, jQuery, MySQL, JavaScript, CSS, HTML, UML


  • Carta Forense (Development)

    Website for most prominent law journal in Brazil.

  • SQL Database Performance Tuning for Developers (Publication)
    Database tuning can be an incredibly difficult task, particularly when working with large-scale data where even the most minor change can have a dramatic (positive or negative) impact on performance. In mid-sized and large companies, most database tuning will be handled by a Database Administrator (DBA). But there are plenty of developers who have to perform DBA-like tasks; meanwhile, DBAs often struggle to work well with developers. In this article, Toptal Freelance Software Engineer Rodrigo Koch provides developers with database tuning tips and explains how developers and DBAs can work together effectively.


  • Languages

    T-SQL, C#, Visual Basic .NET (VB.NET), SQL, JavaScript
  • Frameworks

  • Libraries/APIs

  • Storage

    Microsoft SQL Server, MySQL
  • Other

    Front-End Developer
  • Platforms

  • Paradigms

    Extreme Programming


  • Bachelor's degree in Analysis and Systems Development
    2009 - 2012
    UNIESP - São Paulo, Brazil
  • High School degree in Computer Science
    2003 - 2006
    Colégio Anchieta - São Paulo, Brazil

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