Maxim Fedorov
Technical Director at Roblox
Mountain View, California, United States
Summary
🤩
Rockstar🎓
Top SchoolMaxim Fedorov is a technical director and distributed-systems engineer with 10+ years of experience building highly reliable, large-scale infrastructure, most notably leading core infrastructure at WhatsApp to scale from 1B to 2.5B+ users. Based in Mountain View, he blends hands-on systems programming in Erlang/OTP with strategic platform work—converging an internal OTP fork with upstream, reducing server footprint by 25%, and pioneering tooling like power_shell and erlperf now widely used at WhatsApp. A founding member and board contributor at the Erlang Ecosystem Foundation, he is an active maintainer and contributor to major projects such as erlang/otp and rebar3, driving fixes, performance improvements, and build/test optimizations. At Roblox he now applies that operational and architecture experience to guide technical direction across teams. Known for pragmatic automation and cluster-scale problem solving, he also champions reproducible builds, CI-driven development, and production-safe upgrades. Collected early-career experience across virtualization, security, and SaaS platforms gives him a breadth of systems expertise beyond messaging infrastructure.
10 years of coding experience
15 years of employment as a software developer
Bachelor, Computer Science and Software Engineering, Bachelor, Computer Science and Software Engineering at Bauman Moscow State Technical University
English, Russian
Github Skills (15)
dependency-manager10
dependency-management10
github-release10
build210
error-handling10
rebar10
erlang10
compilation10
dependency-analysis10
cryptography10
dialyzer10
performance-optimization9
git9
testing8
asn18
Programming languages (9)
Github contributions (5)
erlang/otp
Dec 2017 - Dec 2022
Erlang/OTP
Role in this project:
Back-end Developer
Back-end DeveloperContributions:119 reviews, 82 commits, 81 PRs in 5 years 1 month
Contributions summary:Maxim contributed to the Erlang/OTP project by implementing critical fixes related to the Erlang distribution system. Their work involved modifying the error handling for distribution message sizes exceeding the maximum integer value, ensuring the emulator wouldn't crash. The user also improved PKCS8 handling by adding encoders and tests for DSA, RSA, and EC private keys. Further, the user optimized the code to prevent endless rescheduling loops in processes that call process_info(self(), ...).
erlang
erlang/rebar3
Mar 2019 - Mar 2021
Erlang build tool that makes it easy to compile and test Erlang applications and releases.
Role in this project:Back-end Developer
Back-end DeveloperContributions:5 reviews, 15 commits, 11 PRs in 1 year 11 months
Contributions summary:Maxim primarily contributed to the Erlang build tool, focusing on performance optimization, bug fixes, and feature enhancements. Their work included implementing parallel compilation, improving dependency management, and enhancing the git version parsing for releases. They also addressed issues related to IPv6 support for proxies and improved the dialyzer integration. Furthermore, they implemented single-pass pruning for dependency verification and made caching improvements for faster compilation.
erlangdependenciespackagescompiletemplate
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