Matt Mastracci
Staff Software Engineer at Gel
Calgary, Alberta, Canada
Summary
🤩
Rockstar🎓
Top SchoolMatt Mastracci is a staff software engineer and experienced former CTO with 15+ years building scalable systems from embedded firmware to SDKs on millions of mobile devices and high-traffic web services. He combines deep low-level systems expertise (contributions to projects like the Dolphin emulator and Rust-based connection pooling work) with a proven track record of architecting production-grade developer runtimes and SDKs at companies like Deno and FullStory. Matt has repeatedly driven performance and reliability wins—rewriting core subsystems, cutting event-loop and timer overhead dramatically, and migrating networking stacks from Python to Tokio/Rust for better parallelism. He’s comfortable shipping privacy- and bandwidth-conscious mobile analytics, designing CI/CD and test automation, and leading teams to move fast without sacrificing quality. Based in Calgary, he pairs entrepreneurial experience as a founder/CTO with focused security research and system-level problem solving. Notably, his open-source contributions show a rare blend of emulator internals, database integration, and modern Rust tooling.
15 years of coding experience
16 years of employment as a software developer
Engineering Electrical and Software Engineering, Engineering Electrical and Software Engineering at University of Calgary
c
Github Skills (20)
powerpc10
assembly10
c-language10
postgresql10
databases10
x86-6410
rust10
cpp10
cprogramming-language10
emulation10
database10
wiiu9
edgedb9
wii9
performance-optimization9
Programming languages (22)
Github contributions (5)
geldata/gel
Jun 2024 - Mar 2025
A graph-relational database with declarative schema, built-in migration system, and a next-generation query language
Role in this project:
Backend Developer
Backend DeveloperContributions:89 reviews, 117 PRs, 85 pushes in 9 months
Contributions summary:Matt primarily contributed to the backend functionality of the "gel" repository, focusing on enhancing the PostgreSQL integration with a modern data model and graph queries. They implemented new instructions for macOS builds, including setting up dependencies like `icu4c`, indicating a focus on system-level configuration. Furthermore, they worked on improving the connection pool and introduced a Rust-based connection pool implementation.
rdbmsedgedbgraph-relationalormrelational
dolphin-emu/dolphin
Jan 2016 - Jun 2016
Dolphin is a GameCube / Wii emulator, allowing you to play games for these two platforms on PC with improvements.
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 commits, 12 PRs, 110 comments in 5 months
Contributions summary:Matt contributed to the Dolphin emulator's core functionality. They fixed a memory initialization issue related to crashes on OSX. They also addressed a signedness issue and buffer handling within the DVD interface, improving the accuracy of disc read timing. Furthermore, the user refactored and optimized the paired load/store code, enhancing performance through inlining and direct dispatch.
gameboycppemulatorgamesplatforms
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