Bernardo Heynemann
Chief Technology Officer at Flutter Brazil
Rio de Janeiro, Brazil
Summary
🤩
Rockstar🎓
Top SchoolBernardo Heynemann is a seasoned technology leader and current CTO at Flutter Brazil with 17 years of experience building high-scale, resilient systems across startups and global platforms. He has led engineering organizations through hypergrowth—scaling teams from tens to 100+ while maintaining exceptional engagement—and delivered mission-critical regulatory and product milestones in Brazil. His hands-on background spans backend engineering, SRE, and product delivery with senior roles at Coinbase and Meta and deep experience launching real-time websocket systems and platform-grade observability. An early architect of Thumbor (a widely used open-source image service) and contributor to pygit2, he combines production-grade open-source contributions with pragmatic engineering management. Known for instituting blameless incident practices, feature-flagging systems, and rigorous hiring pipelines, he blends technical depth with culture-building and operational rigor. Based in Rio de Janeiro, he’s as comfortable adding C-level strategy as he is writing the code that keeps systems reliable.
17 years of coding experience
23 years of employment as a software developer
Computer Science Technical School Technical in Computer Science, Computer Science Technical School Technical in Computer Science at Instituto de Tecnologia ORT
English
Github Skills (14)
c1710
tornado10
libgit2sharp10
git10
web-framework10
libgit210
c1110
python10
testing10
python-bindings9
refactoring8
pep8
refactor8
performance-optimization8
Programming languages (19)
Github contributions (5)
thumbor/thumbor
Mar 2011 - Aug 2022
thumbor is an open-source photo thumbnail service by globo.com
Role in this project:
Back-end Developer
Back-end DeveloperContributions:18 releases, 35 reviews, 924 commits in 11 years 7 months
Contributions summary:Bernardo implemented SIGHUP and SIGTERM support for the thumbor service, adding the ability to gracefully stop and restart the server. They refactored the server's startup process to leverage the available CPU cores for improved performance and modified how HTTP requests are handled. They also removed forking support and made other minor changes to the codebase.
imagethumbnailglobothumborphoto
libgit2/pygit2
May 2013 - May 2013
Python bindings for libgit2
Role in this project:Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:6 commits in 1 day
Contributions summary:Bernardo primarily contributed to the `pygit2` Python bindings by implementing the `clone_repository` functionality, enabling the cloning of Git repositories. They added the necessary C code to support cloning and provided Python bindings. Additionally, the user wrote and updated tests for the `clone_repository` and other related functions, ensuring the functionality's proper behavior and adherence to coding standards (PEP8). Further contributions include documentation updates.
pythonpython-bindingslibgit2python3swig
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