Leonid Stryzhevskyi
Machine Learning Engineer at 044.ai
Ukraine
Summary
🤩
Rockstar🎓
Top SchoolLeonid Stryzhevskyi is a Machine Learning Engineer and founder with 11+ years building high-performance systems, best known as the creator of the oatpp C++ web framework used in TechEmpower benchmarks. He blends low-level systems and backend engineering with applied ML, currently designing on-device CLIP-powered search and concurrent vector indexing for desktop platforms. His track record spans founding open-source projects, leading mobile and distributed systems work, and consulting on R&D for real-time applications. Notably, his contributions include async and chunked HTTP stream improvements in oatpp and integrating its implementations into widely cited benchmark suites—demonstrating both production-grade engineering and an eye for measurable performance. Based in Ukraine, he pairs entrepreneurial drive (CEO/Founder at Graspity) with hands-on research and implementation skills across C++, mobile, and ML stacks.
11 years of coding experience
14 years of employment as a software developer
Master of computer science Computer Science, Master of computer science Computer Science at National Aviation University in Kiev
Russian, Ukrainian, English
Github Skills (21)
asynchronous10
application-framework10
c-language10
async10
app-framework10
http10
web-framework10
cprogramming-language10
data-stream9
dockers9
docker9
data-streams9
threaded8
multithreading8
hyper-threading8
Programming languages (13)
Github contributions (5)
oatpp/oatpp
Mar 2018 - Jan 2023
🌱Light and powerful C++ web framework for highly scalable and resource-efficient web application. It's zero-dependency and easy-portable.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:20 releases, 172 reviews, 1227 commits in 4 years 11 months
Contributions summary:Leonid primarily contributed to enhancing the data stream capabilities of the C++ web framework, `oatpp/oatpp`. They introduced an improved `transferAsync` function, refactored the existing `transfer` methods, and implemented a chunked encoding/decoding functionality for HTTP protocol support. Additionally, the user made changes to the test suite, including modifying test cases to utilize the new `transferAsync` method.
oatppweb-applicationc-plus-plushttp-serverzero
TechEmpower/FrameworkBenchmarks
Sep 2019 - Jul 2020
Source for the TechEmpower Framework Benchmarks project
Role in this project:Backend Developer
Backend DeveloperContributions:9 commits, 8 PRs, 9 comments in 10 months
Contributions summary:Leonid primarily contributed to the development of the oatpp framework within the TechEmpower Framework Benchmarks project. Their work involved adding and integrating the oatpp framework, including both async and thread-based implementations, by creating components, controllers and associated dependencies. The user also updated the oatpp framework version over several commits and configured the dockerfiles for testing the various oatpp implementations.
techempowerframeworkbenchmarkperformancebenchmarks
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