Ilya Tokar
Senior Software Engineer at Google
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolIlya Tokar is a Senior Software Engineer with 14 years of experience specializing in performance optimization across compilers, runtimes, and core libraries, currently reducing resource use at Google and saving the equivalent of tens of SWE-years. He previously led Intel’s effort to bring AVX/AVX512 to the Go toolchain and GCC x86 backend, delivering dramatic speedups—often 50%+ or multi-fold—in crypto, string handling, and ML workloads. Comfortable working from assembler-level micro-optimizations to application-level profiling, he has shipped production improvements to projects like Go, BoringSSL, tcmalloc and contributed performance fixes to widely used open-source crypto libs such as ring. Based in New York, he combines deep architecture knowledge with practical engineering—e.g., adding prefetch and AVX dispatch to SHA/AES implementations—to squeeze real-world latency and cost reductions at fleet scale.
15 years of coding experience
7 years of employment as a software developer
Master of Science (MSc), Master of Science (MSc) at Moscow Institute of Physics and Technology (State University) (MIPT)
English, Russian
Stackoverflow
151reputation
22kreached
3answers
0questions
Github Skills (30)
assembly10
c-language10
runtimes10
sha10
text-manipulation10
avx10
memory-management10
x8610
security10
go10
performance-optimization10
x86-6410
cryptography10
aes10
boringssl10
Programming languages (6)
Github contributions (5)
google/tcmalloc
Feb 2020 - Mar 2022
Role in this project:
Back-end Developer
Back-end DeveloperContributions:19 commits in 2 years 1 month
Contributions summary:Ilya primarily focused on refactoring and updating the tcmalloc library. Their contributions involved renaming and updating experimental features related to size classes and transfer caches, ensuring code consistency. They also implemented transfer cache statistics tracking and cleaned up legacy code. The user's work included modifying header files, source files, and build configurations.
golang/go
Feb 2017 - Feb 2017
The Go programming language
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 commit, 131 comments, 24 issues in 1 day
Contributions summary:Ilya primarily contributed to optimizing the Go programming language's core components, specifically focusing on performance enhancements in the runtime and standard library. Their work involved optimizing memory operations, such as zeroing memory and string comparisons, by leveraging AVX2 instructions. Furthermore, the user implemented performance improvements in mathematical functions like ceil, floor, and log, which were often critical components of the Go standard library. The user also fixed a regression issue, related to sqrt and several issues related to byte and string manipulation, making the overall performance of the runtime more efficient.
goprogramming-languagegolang
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