Vinicius Jarina
Senior Software Engineer at Apple
Seattle, Washington, United States
Summary
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Rockstar🎓
Top SchoolVinicius Jarina is a senior software engineer with 15+ years of professional experience and two decades of hands-on software design and delivery across desktop, server, and mobile environments. He specializes in native, cross-platform C++ and .NET development—shipping tooling, runtimes and UI frameworks for macOS and Windows—and has deep practical knowledge of OS internals, POSIX, multithreading and language interop. At Microsoft and Apple he focused on developer tooling and platform integration, and his open-source contributions to Mono (fixing XML serialization edge cases) and XWT (cross-platform UI/tree view improvements) show a strong attention to reliability and cross-backend compatibility. Comfortable across full stacks and languages (C, C++, C#, Objective-C, Python, JavaScript), he pairs low-level systems expertise with higher-level product thinking. Based in Seattle, he brings a mix of compiler/runtime experience, mobile UI tooling and CI-driven delivery that helps teams ship robust, multi-platform native applications.
15 years of coding experience
19 years of employment as a software developer
CaelumBachelor's degree, Business Administration and Management, General, Bachelor's degree, Business Administration and Management, General at School of Economics, Business and Accounting at the University of São PauloImpactaCurso técnico em Processamento de Dados, Programação, Curso técnico em Processamento de Dados, Programação at FASPMackenzie Presbyterian UniversityDRCLicenciatura em Matemática, Matemática, Licenciatura em Matemática, Matemática at Universidade de São Paulo / USP
English
Stackoverflow
11reputation
8kreached
1answer
0questions
Github Skills (22)
unit-testing10
runtimes10
multiplatform10
net10
dotnet10
cross-platform10
ui-design10
xml-serialization10
asp-net10
uid10
front-end-development10
dotnet-core10
csharp10
platform-independent10
dotnet-new9
Programming languages (10)
Github contributions (5)
mono/xwt
Jul 2014 - Jul 2019
A cross-platform UI toolkit for creating desktop applications with .NET and Mono
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:21 commits, 13 PRs, 6 pushes in 5 years 1 month
Contributions summary:Vinicius made significant contributions to the XWT cross-platform UI toolkit, primarily focused on enhancing the tree view components across different backends (Gtk, WPF, Mac). They implemented new tree operations, fixed bugs related to node manipulation and layout, and integrated text editing features for rich text views. The user also improved popover functionality, addressing crashes and appearance issues specific to the Mac platform.
dotnetuwpwindowsdesktop-applicationsmono
mono/mono
Mar 2012 - Jun 2012
Mono open source ECMA CLI, C# and .NET implementation.
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:19 commits in 3 months
Contributions summary:Vinicius primarily contributed to the Mono project by fixing serialization/deserialization issues, specifically related to nullable enums and DateTimeOffset. Their work involved modifying code in `XmlFormatterDeserializer.cs`, `XmlFormatterSerializer.cs` and writing unit tests to address bugs and ensure proper handling of data structures like `List<T>` and `DateTimeOffset?` within the XML serialization framework. This included changes to the `KnownTypeCollection` and creation of test classes like `Bug2843Test.cs` and `Bug3258Test.cs`, indicating a focus on improving data serialization/deserialization robustness.
dotnetjitruntimemonoandroid
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