Summary
Cássio Ribeiro is a Senior Android Developer with 15 years of hands-on experience in mobile and web engineering, tracing his Android expertise back to Honeycomb and now shipping Kotlin, coroutines and Compose at NautilusLog. He combines deep Java and Android SDK knowledge with modern architectures (MVVM, Clean), dependency injection, and a long track record integrating Firebase, Retrofit, Dagger and Jetpack across consumer and banking apps. As a founder of startups like Optom and Etutore he’s equally comfortable building full-stack solutions and leading engineering efforts, having engineered backends, multiple frontends and deployment pipelines. His career spans large product teams and freelance roles, delivering apps for banks, telecoms and health/fitness companies while maintaining a pragmatic focus on testable, maintainable code. Unusually for a senior mobile engineer, Cássio has formal postgraduate work in computational intelligence and information security, giving him extra depth in systems design and reliability. Based in Hamburg, he blends entrepreneurial initiative with proven remote collaboration on global projects.
15 years of coding experience
17 years of employment as a software developer
Postgraduation, Software Management and Quality Assurance, Postgraduation, Software Management and Quality Assurance at Pontifícia Universidade Católica de Goiás
Master's degree, Computational intelligence applied to electrical engineering and computer problems, Master's degree, Computational intelligence applied to electrical engineering and computer problems at Universidade Federal de Goiás
Graduation, Internet and Computer Networks, Graduation, Internet and Computer Networks at Universidade Salgado de Oliveira
English, Portuguese, German