Karol Baryła
Junior Software Engineer at ScyllaDB
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolKarol Baryła is a Junior Software Engineer based in Warsaw with eight years of hands-on experience building low-level, performance-sensitive backend systems. At ScyllaDB he contributed to the core NoSQL engine—adding collection indexing support for CQL3 and fixing transport-layer LZ4 decompression issues—work that directly improves query functionality and runtime stability in a production-grade, Cassandra-compatible database. His background includes internships at G-Research and Samsung and a student project implementing distributed BLAS backed by Scylla, showing a blend of distributed systems, C++ and Python skills. Comfortable working on complex storage and networking code, he also updates tests and CI-relevant artifacts, reflecting attention to correctness and maintainability. Still completing his computer science degree at the University of Warsaw, he pairs academic grounding with notable open-source contributions to a widely used database project.
8 years of coding experience
1 year of employment as a software developer
Bachelor's degree, Informatyka, Bachelor's degree, Informatyka at Uniwersytet Warszawski
Polish, English
Github Skills (12)
databases10
c-language10
scylla10
seastar10
cprogramming-language10
relational-databases10
nosql10
index-management10
sql-database10
database10
testing9
lz48
Programming languages (11)
Github contributions (5)
scylladb/scylladb
Apr 2022 - May 2022
NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB
Role in this project:
Backend Developer
Backend DeveloperContributions:9 reviews, 8 commits, 4 PRs in 1 month
Contributions summary:Karol primarily contributed to enhancing the ScyllaDB database system by implementing and refining indexing capabilities. They focused on enabling the use of keys(), values(), and entries() indexes on collections within the CQL3 query language, improving the functionality and query performance. Additionally, the user addressed a critical bug in the transport/server component, ensuring correct buffer sizes for decompressed LZ4 data, and preventing potential crashes. Furthermore, they updated test cases to reflect new functionality and improvements.
cppnosqlseastarcassandrasql
Lorak-mmk/studia
Apr 2019 - Jun 2020
Contributions:1 PR, 83 pushes, 1 branch in 1 year 2 months
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