Juan Hernandez Castillo

I am an ERP Technical Consultant and Software Developer specializing in ERP implementation, system customization, API integrations, and process automation. I help organizations optimize their business processes and extend their digital solutions through reliable and scalable technical development.

My expertise includes C#, .NET, SQL Server, backend engineering, API development, and data-driven automation. I have worked with industrial companies, public institutions, NGOs, and digital businesses — delivering integrations, custom modules, and workflow improvements that create real operational value.

I contribute to full-cycle ERP enhancement projects, translate functional requirements into solid technical solutions, and support teams with best practices in development and architecture. I also mentor junior developers and assist in improving internal standards and processes.

What I can help you with

• ERP implementation & customization

• C# / .NET development

• API integration & automation

• SQL Server & database optimization

• Backend development & system architecture

• Technical troubleshooting & performance improvements

• Code review, refactoring & developer mentoring

• Data workflows (Python, Pandas, NumPy)

I combine strong technical knowledge with clear communication and a practical, problem-solving mindset. My goal is to deliver clean, maintainable solutions that align with the real needs of your business.