Dmytro Koval
Senior Software Engineer at Snowflake
Schleswig-Holstein, United States
Summary
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Senior🎓
Top SchoolDmytro Koval is a Staff Software Engineer with 13 years of experience designing high-performance data processing systems for petabyte-scale workloads. At Snowflake he leads work on distributed services, a vectorized expression engine, and a next-generation in-memory data format that delivered 10x–100x performance gains. Previously he architected geospatial data lakes and real-time ingestion and routing systems at HERE and Triposo, turning raw spatial data into optimized indexes and latency-critical APIs. He co-authored multiple patents and is the creator of the open-source Vinum SQL processor, reflecting a deep blend of systems design, databases, and query execution. Based in Schleswig-Holstein, he represents production-focused engineering in standards bodies like Apache Iceberg while still coding “for fun and profit” in his spare moments.
13 years of coding experience
18 years of employment as a software developer
Bachelor of Computer Science, Computer Science, Bachelor of Computer Science, Computer Science at Donetsk State Institute of Artificial Intelligence
Ukrainian, Russian, English
Github Skills (29)
java9
kotlin9
sicp9
data-structures9
cracking8
algorithms8
mono7
cpp7
flux6
blocking6
asynchronous6
reactive-extensions5
foundation5
reactive5
jvm5
Programming languages (4)
Github contributions (5)
dkoval/leetcode
May 2020 - Feb 2023
Solutions to LeetCode algorithmic challenges
Contributions:1512 commits, 4 PRs, 1812 pushes in 2 years 9 months
algorithms-and-data-structuresdata-structuresjavakotlinleetcode
dkoval/algopuzzles
Jan 2016 - Aug 2018
Contributions:251 pushes, 1 branch in 2 years 6 months
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