João Belem
Mobile Specialist at Grupo Boticário
Paraná, Brazil
Summary
🤩
Rockstar🎓
Top SchoolJoão Belem is a Senior Mobile Engineer and Mobile Specialist with a decade of hands-on experience building and scaling React Native and native apps across Latin America. He has a strong track record of stabilizing and shipping high-impact products quickly—often delivering initial versions within 30 days—and improving code quality via clean code practices, CI/CD, and end-to-end testing that cut manual testing by 90%. João blends technical leadership and mentorship with product-focused UX craftsmanship, contributing prototypes, animations, and native modules to boost user engagement and performance. His work spans startups and enterprise environments, from co-founding an outsourcing firm to driving mobile initiatives at Meta, Olist, and Grupo Boticário, and he often bridges mobile and web teams to accelerate delivery. Based in Paraná, Brazil, he pairs pragmatic architecture for scalability with a knack for rapid validation and store deployments, making him adept at turning complex requirements into polished, crash-free experiences.
10 years of coding experience
7 years of employment as a software developer
Tecnologia da Informação, Tecnologia da Informação at Faculdade de Tecnologia OpetEstácio de Sá University
English, Portuguese
Stackoverflow
111reputation
24kreached
5answers
7questions
Github Skills (88)
http-client10
javascript10
cross-platform10
android10
12-factor10
mobile10
nodejs10
ios10
react-native10
react10
app-framework9
mobile-application9
mobile-development9
hmvc9
push-notifications8
Programming languages (9)
Github contributions (5)
Jojr/tdd-clean-achitecture
Jan 2021 - Jun 2021
React with TDD, Clean Architecture, SOLID
Contributions:13 PRs, 54 pushes, 2 branches in 4 months
reacttdd
Jojr/swift-course-angela-yu
Feb 2021 - Sep 2021
Contributions:4 pushes, 1 branch in 6 months
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