Juan Antonio

About Juan Antonio Castellanos

Microsoft Architect & Team Leader | Software Development | Blockchain & Cloud Solutions Microsoft Architect & Team Leader with over 20 years of experience in enterprise software development across diverse global industries. Skilled in software architecture, microservices development in Azure, and the integration of blockchain and cryptocurrency technologies. A strong problem solver and team optimizer, I lead and coordinate multidisciplinary teams to drive strategic goals and deliver high-impact solutions. Proficient in Oracle Database, Oracle Apex, NodeJS, Solidity, and web technologies, with a proven track record of managing international projects across countries including Italy, India, Canada, the U.S., Brazil, Russia, Denmark, England, Portugal, and France.

Making APEX Smarter One Chat at a Time

Artificial Intelligence (AI) is transforming how applications interact with users by providing dynamic and intelligent responses. Oracle APEX, with its low-code development environment, enables seamless integration of AI-powered services through REST Data Sources. By leveraging APEX_EXEC, we can call AI APIs, process responses, and display them in real-time within an APEX application. Continuing with our [...]

2025-02-14T12:12:28+01:00February 14th, 2025|APEX, blog, Oracle|0 Comments

Because Humans Need Breaks, working with documents, part 3

Now that we have covered everything related to document management in our previous articles, the next step is to implement the file download functionality, allowing users to retrieve and view the files stored in our repository. Additionally, it is important to note that for files of type "assistant and messages", we need to block the [...]

2025-02-10T15:04:23+01:00February 11th, 2025|APEX, blog, Oracle|0 Comments

Because Humans Need Breaks, working with documents, part 2

In this article, we’ll explore how to extend the standard functionalities of Oracle APEX by implementing Custom Events. This approach is particularly useful for performing advanced operations, such as customizing a delete action or styling specific cells in an Interactive Report. Custom Events allow you to go beyond the default behaviors, adding flexibility and control [...]

2025-02-11T10:13:21+01:00February 7th, 2025|APEX, blog, Oracle|0 Comments

Because Humans Need Breaks, working with documents, part 1

Sometimes, before diving headfirst into code and technical specifics, it’s beneficial to step back and see the bigger picture. In this series of articles, we’ll explore how to integrate OpenAI’s capabilities with Oracle APEX to build a robust and customized file upload and management process. The goal is to facilitate secure and efficient interaction with [...]

2025-02-05T08:52:43+01:00February 5th, 2025|APEX, blog, Oracle|0 Comments
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