Giuseppe Ottaviano
Software Engineer at Meta
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolGiuseppe Ottaviano is a seasoned software engineer with 17 years of experience building high-performance backend systems, currently focused on horizontal performance optimization at Meta in London. His career spans search infrastructure and low-level systems work at Facebook/Meta, contributions to RocksDB and HHVM, and deep involvement in widely used open-source C++ projects such as Folly, Wangle, and Facebook's fbthrift. He is skilled at squeezing latency and memory wins from complex codebases—fixing subtle concurrency bugs, improving enum reflection and serialization, and reducing compile and build times. With a PhD in Computer Science and a strong math background from the University of Pisa, he blends rigorous research instincts with pragmatic engineering. Notably, his OSS commits include fixes that address rare race conditions and static destruction order bugs, reflecting attention to hard-to-detect production issues.
17 years of coding experience
13 years of employment as a software developer
Laurea (B.Sc.), Mathematics, Laurea (B.Sc.), Mathematics at Università di Pisa
Stackoverflow
4,603reputation
372kreached
29answers
4questions
macros
top-5%
duplicates
top-1%
Github Skills (40)
algorithm10
code-optimization10
algorithms10
storage-engine10
c-language10
admin10
memory-management10
hacking10
databases10
database-administration10
hhvm10
data-structure10
duplicates10
code-generation10
exception-handling10
Programming languages (6)
Github contributions (5)
facebook/folly
Dec 2014 - Oct 2022
An open-source C++ library developed and used at Facebook.
Role in this project:
Back-end Developer & Software Architect
Back-end Developer & Software ArchitectContributions:1 review, 190 commits, 13 comments in 7 years 11 months
Contributions summary:Giuseppe primarily focused on enhancing the `folly` library with improvements to the `Range` and `IOBuf` classes. Their contributions involved optimizing memory usage through code refactoring and adding methods like `to()` to simplify and streamline data conversion processes. They implemented fixes to critical classes by incorporating features such as a way to serialize and deserialize data. They also corrected errors by addressing issues like the `at` operator's boundary checks and addressing race conditions.
facebookcppc-library
facebook/fbthrift
Jun 2015 - Sep 2022
Facebook's branch of Apache Thrift, including a new C++ server.
Role in this project:Back-end Developer
Back-end DeveloperContributions:46 commits in 7 years 4 months
Contributions summary:Giuseppe primarily contributed to the Facebook Thrift library, addressing issues related to code generation and performance. They resolved `typedef` issues in the C++ generator, optimizing compilation times. The user also made changes to deprecated constant definitions, improving build times. Furthermore, the user improved the efficiency of enum reflection and fixed a static destruction order bug.
cppapache-thriftc-plus-plusapachefacebook
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