Valeriy Sizov
Developer at GitLab B.V.
Oeiras, Lisbon, Portugal
Summary
🤩
Rockstar🎓
Top SchoolValeriy Sizov is a seasoned developer with 15 years of experience specializing in web and server-side engineering, currently contributing to GitLab from Oeiras, Lisbon. He focuses on backend logic, DevOps and CI/CD, with notable open-source contributions to prominent GitLab projects such as Omnibus, gitlab-shell and gitlabhq where he improved replication, authentication, throttling and database schemas. His work blends application-level changes with infrastructure automation—adding Geo disaster-recovery commands, registry replication settings and security enhancements for SSH and tokens. Trained originally as a chemist, he brings an analytical, data-driven mindset to complex systems and reliability engineering.
14 years of coding experience
8 years of employment as a software developer
Master's degree, Organic Chemistry, Master's degree, Organic Chemistry at Kharkiv National University
Stackoverflow
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Github Skills (28)
ruby-rails10
docker10
porting10
postgresql10
gitlab-omnibus10
apidoc10
rails10
dockers10
cicd10
ruby10
backport10
gitlab10
ports10
api10
bus10
Programming languages (6)
Github contributions (5)
gitlabhq/gitlab-shell
Oct 2014 - Jun 2021
Replacement for gitolite. This repo is a mirror of https://gitlab.com/gitlab-org/gitlab-shell/
Role in this project:
Back-end Developer
Back-end DeveloperContributions:19 commits, 1 tag in 6 years 9 months
Contributions summary:Valeriy primarily focused on enhancing the functionality and security of the GitLab shell. Their contributions include adding secret token authentication to requests, implementing error messages for access denials, and modifying the access control system. The user also worked on improving the performance and stability of the shell by implementing the Geo SSH push proxy fix.
gitoliteshellreplacementgitlab
gitlabhq/gitlabhq
Oct 2011 - Dec 2019
GitLab CE Mirror | Please open new issues in our issue tracker on GitLab.com
Role in this project:Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:2326 commits, 1 PR, 27 pushes in 8 years 3 months
Contributions summary:Valeriy primarily contributes to the GitLab CE mirror, making backports and implementing new features. Their work includes modifications to the application's core logic, specifically related to authentication and throttling, indicating backend development. Moreover, the commits involve database schema modifications and index improvements, showing expertise in database engineering. The user also demonstrates knowledge of build processes and configurations by modifying the schema and migrating code within the repository.
gitlab-apinew-issuestrackerrailsgitea
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