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@heldersimo
I am a software developer specializing in .NET, React, and mobile app development.
I build full-stack and mobile applications with a focus on clean architecture and user experience. I have implemented MVC architectures, backend APIs, responsive frontends, and mobile apps using .NET, React, Xamarin, Firebase, PHP/MySQL and SyncFusion components to deliver production-ready features.
I am pragmatic about deployment and operations, with hands-on experience in SQL Server, Windows Server, Linux, virtualization, and hardware diagnostics. I hold an IBM Data Science Professional Certificate and continually iterate on projects that demonstrate tiered access systems, real-time event features, user authentication, and admin dashboards.
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Work history, roles, and key accomplishments
Helder Simao Lima
Developed a React frontend and PHP/MySQL backend for a movie streaming app featuring tiered subscriptions, admin dashboard, favorites, and watch progress tracking.
Helder Simao Lima
Built a cross-platform React Native event participation app with Firebase Authentication, real-time event creation for admins, favorites, and participation tracking.
Helder Simao Lima
Implemented an ASP.NET Core MVC expense tracker using SyncFusion, building backend expense handling, user authentication, and a responsive UI to improve cross-device usability.
Degrees, certifications, and relevant coursework
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