Marcin Dobrzycki - Software Engineer at Meta

Marcin Dobrzycki

Software Engineer at Meta

Menlo Park, California, United States

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Summary

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Rockstar

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Top School

Marcin Dobrzycki is a seasoned software engineer with a decade of experience building high-performance, distributed backend systems from Menlo Park. He has worked at Meta since 2015 on core infrastructure projects such as key-value and sequential storage, and earlier helped design the award-winning NEC HydraStor distributed storage at 9livesdata. His strengths are low-latency, high-throughput C++ systems, non-blocking async IO, and careful attention to concurrency and initialization correctness—evidenced by contributions to Facebook's LogDevice improving traffic shaping, socket-level behavior, and critical bug fixes. Comfortable across large-scale production codebases, he combines deep systems engineering with practical benchmarking and refactoring discipline. Colleagues rely on him for robust, performance-oriented solutions that prevent subtle failure modes in distributed storage.

10 years of coding experience

9 years of employment as a software developer

Master's degree Computer Science, Master's degree Computer Science at Nicolaus Copernicus University

Github Skills (7)

c-language10

cprogramming-language10

networking10

concurrency9

system-design9

multithreading9

performance-optimization9

Programming languages (2)

C++C

Github contributions (5)

facebookarchive/LogDevice

Aug 2019 - Dec 2019

Distributed storage for sequential data

Role in this project:

Back-end Developer

Contributions:27 commits in 4 months

Contributions summary:Marcin primarily focused on enhancing the `logdevice` repository's core functionality. Their contributions include implementing socket-level configurations like `SO_MARK` and improving the `TrafficShaper` to prevent potential starvation. The user also addressed critical initialization order bugs within the `Processor` and refactored and improved the benchmarking processes. Furthermore, the user removed a buggy function `UpdateableSecurityInfo::getSecurityConfig` from the code.

distributed-storagedatabasestoragesequentialsequential-data

dyniusz/dyniusz.github.io

Jul 2017 - Jul 2017

Contributions:44 pushes, 2 branches in 4 days

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