Alexander Sibiryakov - Principal Architect at Zyte

Alexander Sibiryakov

Principal Architect at Zyte

Czechia

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Summary

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Rockstar

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Top School

Alexander Sibiryakov is a Principal Architect with 11 years of experience building and optimizing high-load, distributed systems—specializing in web crawling, search, event-driven architectures, and large-scale data processing. Based in Czechia, he combines deep hands-on skills in C++/Java and Python with systems-level expertise on Linux/BSD to solve cost, scalability and maintainability problems that others avoid. At Zyte he drives architectural decisions, implements critical components and sets design review practices; earlier he led core development on open-source crawling projects like Scrapy and Frontera and contributed key backend and timeout features to Splash. Fluent in Russian, English and Czech, he pairs pragmatic engineering with an insistence on clear project context and ownership—he asks recruiters for detailed project descriptions and reporting lines up front. A former search developer at Yandex, he brings uncommon experience in crawling-to-ranking pipelines and production antispam and QA systems.

11 years of coding experience

17 years of employment as a software developer

Engineer, Heat treatment of metals, statistical modeling of cooling process, Engineer, Heat treatment of metals, statistical modeling of cooling process at Ural State Technical University

Stackoverflow

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Github Skills (27)

code-optimization10

web-crawler10

python10

back-end-development10

webscraper10

webscraping10

crawling10

scrapy10

sqlalchemy10

twisted10

crawler10

command-line-interface9

hbase9

multithreading9

memory-management9

Programming languages (5)

ShellRustCHTMLPython

Github contributions (5)

scrapinghub/frontera

Jan 2015 - Nov 2019

A scalable frontier for web crawlers

Role in this project:

Back-end Developer

Contributions:23 releases, 835 commits, 286 PRs in 4 years 10 months

Contributions summary:Alexander focused on refactoring and optimizing the `frontera` project, specifically the backend components related to data storage and crawling strategy. Their work involved extracting methods, simplifying logic, and enhancing efficiency in the SQL and memory backends. They implemented various backend interfaces for queue, metadata, and states to support modularity. The user introduced a new class to handle overused buffer and optimized the downloader pool usage.

scalableweb-crawlersweb-crawlercrawlerscrawler

scrapinghub/splash

Jan 2015 - Sep 2020

Lightweight, scriptable browser as a service with an HTTP API

Role in this project:

Back-end Developer

Contributions:17 commits, 2 PRs, 5 pushes in 5 years 8 months

Contributions summary:Alexander primarily focused on adding and modifying command-line options for the Splash server. Their commits introduced a `--max-timeout` option, allowing for the control of request processing time. They updated various files, including `server.py`, `resources.py`, and `render_options.py`, to incorporate the new option and ensure its functionality. Furthermore, they improved the handling of timeout configurations and implemented corresponding unit tests.

with-serviceapibrowserscriptablejavascript

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