Alex Chernyakhovsky
Principal Systems Engineer at Cloudflare
Cambridge, Massachusetts, United States
Summary
🤩
Rockstar🎓
Top SchoolAlex Chernyakhovsky is a Principal Systems Engineer with 15 years of experience building robust, low-level networking and systems software, currently based in Cambridge, MA. He has held senior engineering roles at Google and Meta and now drives platform-level work at Cloudflare, blending deep protocol expertise with production-grade delivery. His open-source contributions include meaningful enhancements to QUIC/MASQUE tooling in Google's quiche repo—adding TUN-based CONNECT-IP client support—and reliability and testing improvements to the widely used mosh project. Alex combines an MIT EECS background with a founder's mindset from an early startup, often tackling cross-platform build and compatibility challenges that quietly keep distributed systems dependable.
15 years of coding experience
13 years of employment as a software developer
Bachelor of Science Electrical Engineering and Computer Science, Bachelor of Science Electrical Engineering and Computer Science at Massachusetts Institute of Technology
English, Russian
Github Skills (31)
ss10
security-hardening10
ssl10
c-language10
sslv310
c1110
networking10
security10
c1710
quic10
cryptography10
build-automation10
code-coverage10
rust10
cprogramming-language10
Programming languages (16)
Github contributions (5)
mobile-shell/mosh
Mar 2012 - Oct 2022
Mobile Shell
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:45 reviews, 34 commits, 74 PRs in 10 years 9 months
Contributions summary:Alex's primary contributions involve improving the build process and code quality of the mosh project. They added support for generating coverage reports using gcov and lcov, enhancing testing capabilities. Furthermore, they addressed build failures on specific platforms and compiler versions by introducing necessary header includes and correcting code to appease older compilers. They also improved the build and testing process on macOS.
shelllinuxandroid
google/quiche
Nov 2022 - Dec 2022
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 commits in 27 days
Contributions summary:Alex's primary contribution involves enhancing the `masque_client` tool within the `quiche` repository. They implemented a feature to bring up a TUN device for the client, enabling connectivity via a MASQUE CONNECT-IP server and access to external websites. The changes include modifying the `masque_client_bin.cc` and `masque_utils.cc` files, which involved setting up and managing the TUN interface, handling IP packets, and integrating with the MASQUE client session for encapsulated IP communication. The user also added build rules for the MASQUE client and server binaries, and resolved a build issue.
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