Wladston Filho 
Lucas Petes is a designer who isn’t afraid to code. With a deep love for design, he has produced countless clean and gorgeous interfaces. He talks about his career’s history, giving us a window to understand how it feels to be a designer working among programmers. He discusses the design-development complementarity, pointing that the two are sides of the same job.
Carolina Bigonha is one of the most focused and clear-minded people I know. She was a year ahead of me at the university, and a source of inspiration. I had the opportunity to talk more to her in a conference where she was presenting her research on social networks. She is an engineer who loves her work and also has a passion for business development; it was a great privilege to talk to her about coding.
Rafael “Rafa” Viotti is the programmer with the highest eye for detail and quality I ever knew. This guy will spot an extra space in your code as quickly as he will point out an extra comma in a source comment. During the time I worked with Rafa, he significantly influenced my coding style, always encouraging me to strive for excellence in my code.
Leonardo “Leo” Conegundes launched a startup with my high school friends, but I only met him during our computer science studies, when he was presenting his research on using Artificial Neural Networks for the stock market. From then on, every time I talk to Leo, he is always sharing new trends and technologies. When he talks about his startup, you can clearly see he dreams of a future where Brazilians participate more in the stock market. He is working very hard to see that this dream becomes a reality. Leo knows no fear when it comes to solving problems. For his academics studies, he worked on cracking the hardest types of problems in computing.