Hire the Best MySQL Developers
in Argentina

Full-stack developer specialized in maintaining, improving and modernizing existing PHP and Classic ASP systems — including MySQL and SQL Server backends. I help companies keep legacy platforms stable while adding features, fixing issues, integrating APIs (Stripe, PayPal, REST), improving performance, and modernizing step-by-step without breaking production. Specialties: Long-term maintenance (3–12+ months) PHP 5/7 & Classic ASP MySQL & SQL Server Stripe / PayPal / Webhooks Backend fixes & feature upgrades Cronjobs & automation React/Tailwind dashboards Languages: Spanish (native), English (professional), Portuguese (basic), Italian (basic) If your system is old, undocumented or difficult — I can maintain it and modernize it safely.

During my 25+ years of experience, I've gone through several different IT roles: developer, analyst, database designer, database admin, systems administrator, network designer, team leader, architect, CTO. This background allows me to understand all aspects involved in application development, being able to design a complex multi platform app from the ground up as well as help troubleshooting an existing app's problems or weird system behaviour. P.S.: NOT a translator.

I'm a professional .NET developer since 2006, developing in .NET Framework WinForms applications first, WebForms applications since 2010, some ASP.NET MVC and more specifically: .NET Core + EF Core and Angular + ReactJS solutions since 2018, + .NET6 for mostly containerized apps since 2022, and .NET8/9 and 10 since this 2026. I like challenges, I like to design new projects as well as fixing bugs on existent new apps. I like researching and trying new ideas. I like to do some C and C++ in my Linux PC (just for fun by now). My experience is mostly based in having been working for outsourcing as well as own product companies in Argentina and Uruguay. I also worked for international enterprises like Hewlett Packard (Enterprise Services) developing apps for specific customers (private companies). My tech stack: * .NET Framework: WinForms, ASP.NET WebForms and ASP.NET MVC. * .NET Core: ASP.NET Core MVC, REST APIs, and EF Core, Dapper. Some Redis. Preferred: .NET6 and upper. * T-SQL: mostly MySQL Server and SQL Server; and some (outdated now) experience in PL-SQL and PostgreSQL too. * HTML, CSS, javascript, jQuery. * Angular 2+. * ReactJS * Docker, Git, Agile (Scrum)

Hello! I am Hernan, nice to meet you! I have 11 years of experience in the IT industry. I currently work as a Data Engineer, leveraging AWS services along with Python, PySpark, and SQL to build and maintain data solutions. I also have experience administering databases such as SQL Server, MySQL, MongoDB, and PostgreSQL. I hope to help you with your projects and teach you what you need so you can move forward with your project!