Wladston Filho 
I met Ruhan Bidart during my first internship. He was my boss, even though he is younger than me. We worked together for almost two years, then we went our separate ways, but later we met again during our master’s studies, as we were in the same class. Ruhan is not only a great software developer, but a complete person in every way. I love to work with him not only for his excellent technical skills, but also for his passion in doing good and helping others.
Eduardo Barbosa was one of my colleagues from university and work, and a top coder I greatly respect and admire. Of course I had to interview him as well! He offered some very valuable insights that I’m pleased to share.
I knew Rafael Almeida even before we met by change at college. This is surely one of the best programmers I know. He makes magic happen in his code, while also holding extremely high code quality standards. Rafael has helped my in my programming path in many ways, so I interviewed him so his word can also help others.
I had the great privilege to interview Eli Cortez, co-founder of Neemu, one of Brazil’s top e-commerce tech company, which today powers search and recommendation engines of the biggest e-commerce websites in the country. Eli received his PhD from the Federal University of Amazon, winning the award for best Computer Science thesis in Brazil. Afterwards, he moved to the USA to work at Microsoft as an applied researcher.