Marcos Nunes de Souza
Hi, my name is Marcos. I'm a mobile developer with more than 5 years of experience, focused on React Native.
About
Hi, my name is Marcos. I’m a mobile developer with more than 5 years of experience, focused on React Native.
I started my career working with web development, but in the last years I’ve been working mostly on mobile apps.
I worked on white-label apps, banking systems, e-learning platforms, and telecom solutions.
One of my biggest projects was an app for supermarkets in Latin America, where I worked on credit card features, payments, and app performance.
I have good experience with Redux, Context API, API integration, and I like to follow good practices like clean code and writing unit tests.
I’m also comfortable working with teams, reviewing code, and helping improve the product.
Now I’m looking for international remote opportunities to grow more and work with global teams.
- 7 years' experience
- Joined December 2025
Skills· 17
Languages
- EnglishFluent
- Spanish; CastilianBeginner
Industry experience
- Software & Internet
- Healthcare
- Media & Entertainment
- Education
- Professional Services
Work experience· 6 roles
Complete development of apps and web systems. Creation of interfaces in Figma and frontend implementation. iOS (SwiftUI), Android (Kotlin), React Native and Angular applications. Backend with C#, PHP, and Node.js, and integration with REST APIs and secure authentication. Application of Clean Architecture and MVVM. Automated testing and app store deployment. Focus on performance, usability, offline features, and fast deliveries using agile methodologies.
Maintenance of the White Label app and customization for GB Arbosa and Mercantil networks. Optimization of the financial module (-35% errors, +35% usage). Use of Redux, Context API and Styled-components and integration with REST APIs. Automated deployments via GitLab CI/CD and monitoring with Firebase Crashlytics. Performance improvements (-20% load time).
Development of banking, education, and various other apps. Creation of resources with secure authentication. Real-time monitoring with IoT sensors. Application of Clean Code best practices and use of React Native, WebSockets, and REST APIs. Automated testing and CI/CD with GitLab and collaboration with multi disciplinary teams.
Education
Certifications and awards
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