Ronaldo Possan is a Senior Software Engineer based in Greater São Paulo with over 17 years working primarily in Ruby and more than a decade of hands-on experience delivering scalable web and API-driven systems. He combines deep backend expertise (Ruby on Rails, Sinatra), multi-language fluency (Python, Java, PHP, Node.js) and databases (Postgres, MySQL, Oracle, MongoDB) with a strong focus on quality through TDD/BDD, code review and coding dojos. Ronaldo has led architecture and engineering efforts for large clients like Walmart and Thomson Reuters, shipping cloud-native, containerized solutions and integrating AI/ML chatbots in production. Comfortable as both an individual contributor and team lead, he routinely mentors distributed teams and evangelizes best practices such as CI/CD, microservices and behavior-driven development. Notably, he pairs a passion for elegant Ruby and JavaScript code with practical ML integrations and production DevOps (Docker, Kubernetes, GCP), making him effective across the full delivery lifecycle.
11 years of coding experience
9 years of employment as a software developer
Sistemas de Informação, Tecnologia da Informação, Sistemas de Informação, Tecnologia da Informação at UNOPEC
Técnico em Processamento de Dados, Tecnologia da Informação, Técnico em Processamento de Dados, Tecnologia da Informação at FIEC
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