Sergey Balabanov
Principal Software Engineer at Uber
Seattle, Washington, United States
Summary
🤩
Rockstar🎓
Top SchoolSergey Balabanov is a Principal Software Engineer in Seattle with over a decade of experience building developer-facing infrastructure and large-scale systems at Uber, Facebook, and Microsoft. He specializes in monorepo tooling, incremental build and parsing systems, CI/CD and test selection at scale, and applying compiler and language design ideas to improve developer productivity. His background includes query understanding and ML infra at Bing and leading a 50-person engineering team for online banking and trading systems, giving him both deep technical and management perspective. Sergey contributes to open-source tooling—his work improving Facebook’s Nailgun server reflects a focus on robustness and maintainability in developer tools. He blends low-level systems thinking (C/C++, JVM behavior) with practical engineering analytics and emerging AI/LLM techniques to accelerate engineering teams. His MS in Mathematics and Computer Science underpins a methodical approach to complex tooling and performance problems.
10 years of coding experience
18 years of employment as a software developer
Master of Science (MS) Mathematics and Computer Science, Master of Science (MS) Mathematics and Computer Science at Moscow Institute of Electronics and Mathematics (Technical University)
Russian, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (8)
socket-io10
javas10
socket10
refactoring10
exception-handling10
java10
network-programming9
concurrency9
Programming languages (5)
Github contributions (5)
facebookarchive/nailgun
Mar 2018 - Nov 2018
Nailgun is a client, protocol, and server for running Java programs from the command line without incurring the JVM startup overhead.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 32 commits, 53 PRs in 7 months
Contributions summary:Sergey primarily focused on refactoring and improving the Nailgun server code. Their contributions included removing class references from nailgun stats, implementing proper handling of `SocketException` during nail termination, and refactoring the `NGCommunicator` and `NGSession` for socket closure. Furthermore, they moved the nail command context to `NGCommunicator` for better encapsulation. These changes improved the server's robustness and maintainability.
java-programsoverheadjvmprogramsjar
sbalabanov/nailgun
Jan 2018 - Oct 2018
Nailgun is a client, protocol, and server for running Java programs from the command line without incurring the JVM startup overhead.
Contributions:50 pushes, 4 branches in 9 months
java-programsoverheadjava-bytecodejvmprograms
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