Rafael's Blog and Portfolio

Italian Tech Week 2025: My personal highlights I have been living in Turin for the last 2 years.

Building a RAG powered AI Agent using Langchain.js Recently I was challenged to create a conversational AI Agent that was capable of reading a PDF and answer questions about it using Langchain.js.

Simple tricks I use to make web apps mobile friendly Many business applications require complex interfaces with vast amounts of data and features.

What I learned building my first AI Agent – Part 1 Since I was a child I loved watching cartoons and movies about robots doing boring work for their owners.

How to use AI to improve the architecture of your app When a codebase start to become very large, it is very important to make the right decisions about the architecture of the software.

Qwen 2.5 is a series of advanced large language models developed by Alibaba Cloud, featuring significant enhancements over its predecessor, Qwen 2.

App Review: How I use HeyGen to create my virtual clone that speaks any language One of the things that fascinates me more about AI is to be able to create personalised content at scale.

AI business adoption: a people centric approach As AI-powered applications become more widespread, businesses are using these tools to reduce costs, boost efficiency, and enhance their products and services.

Stack Overflow Developer’s Survey is one of the most important resources available to understand the new trends on software development.

How to choose the right LLM (Large Language Model) for your application With the popularisation of LLM ( large language models) and the increase of the AI powered applications demand, we have seen a surge on the offer of new LLMs and services.