Jon Simantov
Staff Software Engineer at Sony Interactive Entertainment
San Francisco Bay Area United States
Summary
🤩
Rockstar🎓
Top SchoolJon Simantov is a Staff Software Engineer with over two decades of C++ and systems experience, currently focused on cross-platform SDKs and developer-first tooling. He built the Firebase C++ SDK and helped migrate multiple SDKs to open source with modern CI/CD at Google, enabling seamless integration across iOS, Android, macOS, Windows, and Linux. Jon combines deep performance optimization—honed by directing 20+ handheld console titles in C, ARM and Z80 assembly—with large-scale API design and style-guide authorship for teams. He’s contributed to high-profile open-source projects like FlatBuffers, improving build, performance, and test automation, and has practical expertise patching complex dependencies for multi-platform builds. Based in the San Francisco Bay Area, he’s known for pragmatic leadership that bridges low-level systems work and developer experience, and for exploring AI-assisted development workflows to speed SDK delivery.
11 years of coding experience
24 years of employment as a software developer
BS Computer Science, BS Computer Science at New York University - Polytechnic School of EngineeringStuyvesant High School
Stackoverflow
1reputation
0reached
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Github Skills (36)
ios10
c-language10
patch10
testing10
data-serialization10
serialization10
sdk10
cplus10
android10
flatbuffers10
build-automation10
dotnet-core10
cpp10
cprogramming-language10
csharp10
Programming languages (7)
Github contributions (5)
firebase/quickstart-unity
Jan 2017 - Mar 2020
Firebase Quickstart Samples for Unity
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:16 commits, 9 pushes, 58 comments in 3 years 2 months
Contributions summary:Jon primarily worked on integrating and updating Firebase quickstart samples for Unity, demonstrating a focus on cross-platform mobile development. Their commits involved removing misleading comments, replacing live URLs with placeholders, and refactoring samples for better integration within a single project. Additionally, they introduced new test apps related to Firebase features like Crashlytics and Firestore, as well as incorporating GameCenter authentication on iOS. This indicates a strong emphasis on expanding the functionality and platform support of the Firebase integration within Unity.
firebase-remote-configfirebase-databaseunity-tutorialfirebasefirebase-unity-sdk
google/flatbuffers
Nov 2014 - Jan 2022
FlatBuffers: Memory Efficient Serialization Library
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:1 review, 14 commits, 6 PRs in 7 years 3 months
Contributions summary:Jon contributed to the FlatBuffers project by addressing build issues, optimizing performance, and improving testing capabilities. They fixed a build problem on Android by adding a missing file and updated the C# implementation for enhanced performance through unsafe mode. Furthermore, the user added new tests for byte reversing functions and integrated a feature to customize arguments for the flatc compiler on Android builds. Their work also involved the refinement of string and vector handling, along with a code style adjustment.
rpcmemorypythonmarshallingprotobuf
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