Sergii Kryvonos
Fellow Software Engineer at HitZone
Horsham, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolSergii Kryvonos is a Fellow Software Engineer and founder with 4 years of recent senior industry experience and a long background building scalable, low-latency, highly available backends across .NET/Core on Windows and Linux, both on-prem and in Azure/AWS. He has led teams and systems at game and ad-tech companies, architecting telemetry, load-testing frameworks (including an MBrace-based tool simulating millions of CCU) and production-ready CQRS/EventSourced services with strong DevOps and BI integrations. As an active back-end and database engineer he has contributed to the MariaDB server codebase, improving JSON handling and query optimizer behavior. Based in Horsham, UK, he combines hands-on coding with CTO-level product and operational leadership, and runs a secondary GitHub presence that signals a habit of compartmentalizing work and experiments.
4 years of coding experience
18 years of employment as a software developer
Master Applied Mathematics, Master Applied Mathematics at Taras Shevchenko National University of Kyiv
Ukrainian, Russian, English, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (18)
json10
c-language10
develop10
qt10
mariadb10
ide10
cplus10
cprogramming-language10
relational-databases10
admin9
database-administration9
sql9
storage-engine8
database8
rdbms8
Programming languages (4)
Github contributions (5)
MariaDB/server
Oct 2021 - Dec 2021
MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:6 reviews, 45 commits, 10 PRs in 2 months
Contributions summary:Sergii primarily contributed to the MariaDB server codebase by addressing various issues related to JSON handling and optimization within the database. Their work includes adding assertions for detecting duplicated JSON keys, fixing inconsistencies in the JSON writer, and integrating improvements to the query optimizer, specifically in the context of range scans and index merging. They also reverted a change related to the WSREP plugin. Furthermore, the user addressed issues in the SQL code related to best disjunct quick and the keyparts JSON tracing.
licensedsql-servermysqlsqlmariadb-server
SergMariaDB/openmind
Dec 2021 - May 2023
Deduction framework with arbitrary mathematical system solver.
Contributions:106 pushes in 1 year 5 months
pythondeductionarbitrarysolvermathematical
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