Alex Vasilenko - Production Engineer at Meta

Alex Vasilenko

Production Engineer at Meta

Berlin, Germany

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Summary

👤

Senior

🎓

Top School

Alex Vasilenko is a Principal Production Engineer based in Berlin with 14 years of experience building and operationalizing high‑scale web and backend systems across e‑commerce and consumer services. He combines hands‑on expertise from front-end tweaks (contributions to the popular Video.js player) to low‑level reliability work such as kernel panic analysis and resilient connection logic in widely used PHP libraries. At FlixBus he led cross-team architectural initiatives—modernizing payment and booking funnels to halve page load and reduce failure rates—and now applies that systems mindset at Meta. Comfortable in high‑pressure, high‑load environments, he is an advanced Kubernetes user and DevOps practitioner who has implemented billing systems, Terraform and Ansible automation, and HA architectures. Known for fast orientation in unfamiliar codebases and translating top‑level strategy into team deliverables, he treats engineering as a hobby turned profession and enjoys tackling the least obvious technical and organizational bottlenecks.

14 years of coding experience

15 years of employment as a software developer

scholar, English, Mathematics, Physics, scholar, English, Mathematics, Physics at Primary Specialized School w advanced English Language study

Bachelor, Application of non-destructive systems, Bachelor, Application of non-destructive systems at Nacional'nij Tehnicnij Universytet 'Kharkivskij Polytehnicnij Institut'

German, Ukrainian, Russian

Github Skills (31)

socket-io10

assetic10

javascript10

amqp10

symfony-bundle10

testing10

amazon-elasticsearch10

css10

user-authentication10

authentication10

autoprefixer10

rabbitmq10

elasticsearchquery10

php10

socket10

Programming languages (10)

JavaShellCJavaScriptGoPHPSwiftHTML

Github contributions (5)

php-amqplib/php-amqplib

Oct 2015 - May 2017

The most widely used PHP client for RabbitMQ

Role in this project:

Back-end Developer

Contributions:7 commits, 2 PRs, 31 comments in 1 year 7 months

Contributions summary:Alex primarily contributed to the core functionality of the `php-amqplib` library by implementing and refining connection-related features. Their work included adding a new lazy socket connection, addressing reconnection logic, and optimizing socket communication parameters. They also made the heartbeat mechanism optional and brought heartbeat support to socket connections. Overall, the user focused on improving the robustness and efficiency of the library's connection handling.

phprabbitmqamqpmessagingphp-amqplib

kriswallsmith/assetic

Jul 2013 - Aug 2014

Asset Management for PHP

Role in this project:

Back-end Developer

Contributions:6 commits in 1 year 1 month

Contributions summary:Alex focused on integrating Autoprefixer, a CSS post-processor, into the Assetic framework. They added support for processing CSS with vendor prefixes, allowing for broader browser compatibility. The contributions include implementing the Autoprefixer filter and updating the codebase to handle browser-specific configurations, as well as addressing potential Windows-specific issues. These changes extended the framework's capabilities related to front-end asset management.

php

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