Michał Sienkiewicz is a Staff Software Engineer with 12 years' experience building large-scale backend systems, currently tech-leading Google’s cloud infrastructure for Android and WhatsApp backups that serve billions of devices. He joined Google in 2020 after driving Remote Execution orchestration and build/test distribution at Facebook, and earlier contributed to Buck, the widely used fast build system, improving its offline logging and reliability. An Imperial College MEng (First Class) graduate with strong internship pedigree at Facebook, he combines deep distributed-systems expertise with hands-on engineering and cross-team leadership. Notably, his background spans both storage and orchestration layers, giving him a rare end-to-end perspective on scalable build and backup platforms.
11 years of coding experience
7 years of employment as a software developer
Master of Engineering (MEng), Computing, First Class Honours, Master of Engineering (MEng), Computing, First Class Honours at Imperial College London
IB Diploma, 42/45, IB Diploma, 42/45 at IB Ingmar Bergman
A fast build system that encourages the creation of small, reusable modules over a variety of platforms and languages.
Role in this project:
Back-end Developer
Contributions:82 commits in 3 years 6 months
Contributions summary:Michał primarily contributed to the development and enhancement of the "buck" build system. Their work involved implementing features related to offline logging, including the addition of new subdirectories and the creation of methods for handling log paths and creating directories. They also added a ScribeLogger with an offline mode and supporting test loggers to enable storing of logging data when logging fails. These changes suggest the user was focused on improving logging capabilities and reliability within the build system.
Contributions:16 commits, 1 push in 1 year 7 months
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Michał Sienkiewicz - Staff Software Engineer at Google