Rafael Gonzaga
Principal Open Source Engineer at NodeSource
São Paulo, Brazil
Summary
🤩
Rockstar🎓
Top SchoolRafael Gonzaga is a Principal Open Source Engineer based in São Paulo with nine years of experience specializing in system performance, resilience, and migrations from monoliths to microservices. He combines hands-on backend and DevOps skills with security-focused contributions to Node.js core, having fixed HTTP/2 memory leaks and several CVEs, and now serves on the Node.js TSC. An active Fastify and Clinic.js core member, Rafael has improved core routing, logging, CI/CD and benchmarking tooling used to diagnose real-world Node.js performance at scale. His work on profiling tools like 0x and undici demonstrates a rare blend of low-level performance engineering and practical developer tooling. Colleagues know him for turning complex performance issues into measurable improvements and for influencing ecosystem-wide best practices through well-tested, backwards-aware changes.
9 years of coding experience
7 years of employment as a software developer
Bacharelado em Ciência da Computação Ciência da Computação, Bacharelado em Ciência da Computação Ciência da Computação at UNIBTA - Centro Universitário
Portuguese, English
Github Skills (41)
fastify10
debug10
javascript10
benchmark10
c-language10
performance-analytics10
performance-monitor10
code-profiling10
apidoc10
clientside10
testing10
http10
linux10
benchmarking10
cicd10
Programming languages (21)
Github contributions (5)
fastify/benchmarks
Aug 2020 - Dec 2022
Fast and low overhead web framework fastify benchmarks
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:44 reviews, 52 commits, 67 PRs in 2 years 4 months
Contributions summary:Rafael contributed to the project by implementing and maintaining benchmarking and metrics gathering scripts. They developed scripts to compare the performance of different web frameworks, and added metrics to track startup and listen times. The user also updated the codebase to align with newer versions of dependencies like Fastify, node v18, and updated CI/CD workflows.
overheadfastestframeworkfastifybenchmarks
clinicjs/node-clinic
Oct 2021 - Aug 2022
Clinic.js diagnoses your Node.js performance issues
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:7 releases, 24 reviews, 37 commits in 10 months
Contributions summary:Rafael primarily contributed to the project by enhancing the CI/CD pipeline and improving testing infrastructure. They introduced support for multiple Node.js versions, updated testing configurations, and implemented features to facilitate testing, such as stop-delay for specific tests. These changes focused on improving the build process and improving the tools capabilities within the project. Additionally, the user made version bumps for the project's dependencies.
node-jsjavascriptperformancenodejsdiagnoses
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.