Brittany Reynoso
Senior Software Engineer at Meta
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolBrittany Reynoso is a Senior Software Engineer in New York with 12 years of experience optimizing runtimes and backend systems for high-scale products. At Meta she has driven Python runtime performance work—contributing to Cinder and the experimental Pyro/Skybison runtime—and led a cross-functional effort to upgrade Cinder for Python 3.10. Her work blends low-level VM and bytecode enhancements (including new bytecode instructions and Unicode optimizations) with pragmatic engineering that reduces production cost for large consumer services like Instagram. Earlier roles at Bloomberg honed her backend and full-stack skills across data ingestion, indexing, and analytics, where she also led scrum teams and product-facing redesigns. She combines a systems-oriented mindset with product empathy, able to translate complex runtime improvements into measurable efficiency wins for product teams. Notably, she has experience using type information to compile more efficient Python bytecode, a less-visible lever that improves both performance and stability at scale.
12 years of coding experience
8 years of employment as a software developer
Bachelor of Science (B.S.), Computer Science, Bachelor of Science (B.S.), Computer Science at The College of William and MaryPeddie School
Github Skills (9)
compiler10
compiler-compiler10
runtimes10
jit10
python10
interpreter10
compile10
data-structures8
data-structure8
Programming languages (3)
Github contributions (5)
facebookincubator/cinder
Jun 2022 - Jan 2023
Cinder is Meta's internal performance-oriented production version of CPython.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:75 commits, 2 PRs, 2 branches in 7 months
Contributions summary:Brittany's contributions primarily involve enhancing the performance and features of Cinder, Meta's internal performance-oriented CPython implementation. They specialized and optimized code within the JIT compiler to improve performance. The user also added support for new bytecode instructions to enhance functionality. Their work included implementing new features like UnicodeConcat and improving the codebase's handling of strings and data structures.
pythoninternaljitcinderruntime
brittanyrey/Werewolf
Oct 2013 - Dec 2013
Contributions:113 commits in 1 month
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.