Sergei Kasatkin
Software Engineer at Sixt
Germany
Summary
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SeniorSergei Kasatkin is a seasoned software engineer with 11 years of experience building reliable, large-scale systems across ecommerce, advertising, and hosting industries. Currently at Sixt in Germany, he has a strong track record of improving performance and stability—redesigning background processing, standardizing addresses for millions of records, and optimizing critical automation pipelines. He is fluent in PHP-based stacks and infrastructure tooling (Symfony, Zend, Yii2, MySQL, Redis, RabbitMQ, Docker) and has repeatedly reduced operational toil by introducing deploy automation and monitoring. Earlier roles show both hands-on engineering and operational leadership, including standing up a 24/7 incident response team for 8K+ servers. Colleagues describe him as proactive and pragmatic, able to chase down thorny production issues while delivering new features. He brings a practical blend of backend craftsmanship and systems thinking that improves both code and team workflow.
11 years of coding experience
10 years of employment as a software developer
English, Russian
Github Skills (91)
compiler-construction10
php-library10
tokenizer10
phone-number10
recursive-descent10
yii10
address-parser10
standardization10
chinese-simplified10
scheme10
recursive10
php10
lex10
jetbrains9
color-scheme9
Programming languages (4)
Github contributions (5)
gietos/yii2-scheduling
Jun 2016 - Oct 2018
Scheduling extension for Yii2 framework
Contributions:3 releases, 8 PRs, 19 pushes in 2 years 3 months
schedulingphpyii2-frameworkyii3yii2
kstkn/hypersomnia
Jul 2019 - Oct 2020
Microservice RPC client
Contributions:25 releases, 44 commits, 1 PR in 1 year 3 months
rpcrpc-clientdebugmicroservicesmicroservice
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