Vlad Khorsun
Core Developer at Firebird Foundation (FirebirdSQL)
Ukraine
Summary
🤩
Rockstar🎓
Top SchoolVlad Khorsun is a seasoned core developer with 22 years of software engineering experience, currently contributing to the Firebird Foundation on the FirebirdSQL project since 2003. With a background as a lead programmer at Credit Dnepr Bank, he brings deep expertise in database internals, reliability and long-term maintenance of critical systems. Trained in applied mathematics at Dnipropetrovs'kij Nacional'nij Universitet, he combines analytical rigor with pragmatic engineering to solve low-level and performance-sensitive problems. Based in Ukraine, Vlad is a steady presence in open-source database development, demonstrating rare institutional knowledge of a single major project across decades. His career reflects a commitment to stability and correctness over flashy trends, making him especially suited for complex, mission-critical backend work.
22 years of coding experience
19 years of employment as a software developer
Applied mathematics, Applied mathematics at Dnipropetrovs'kij Nacional'nij Universitet
Russian, Ukrainian, English
Github Skills (47)
firebirdsql10
client-server10
sql10
rdbms10
firebird10
relational-databases10
database10
git-mirror9
lock-free8
icu8
java7
rcu7
unicode7
cpp6
nhibernate6
Programming languages (4)
Github contributions (5)
hvlad/firebird
Aug 2021 - Oct 2024
Firebird server, client and tools
Contributions:122 pushes, 33 branches in 3 years 2 months
client-serverfirebirdfirebirdsql
FirebirdSQL/firebird
Mar 2017 - Jan 2023
Firebird server, client and tools
Contributions:197 reviews, 75 commits, 143 PRs in 5 years 11 months
client-serversqlfirebirdsqldatabasefirebird
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