Marcin Maliszkiewicz
Senior Software Engineer at ScyllaDB
Poland
Summary
🤩
Rockstar🎓
Top SchoolMarcin Maliszkiewicz is a Senior Software Engineer with 11 years of experience, currently contributing to core backend and database engineering at ScyllaDB from Poland. He specializes in high-performance NoSQL systems and distributed database components, notably improving the alternator compatibility layer for Cassandra/DynamoDB and fixing complex GSI range key and indexing bugs. His contributions include performance wins like enabling inlining in rapidjson and correcting base64 decoding for binary data, demonstrating attention to both correctness and throughput. A Warsaw University of Technology computer science alumnus, he blends academic foundations with pragmatic, production-focused engineering. Notably, he operates at the intersection of systems-level C++/Seastar work and higher-level protocol compatibility, making him effective at bridging low-level performance with API-level interoperability.
11 years of coding experience
Computer Science, Computer Science at Warsaw University of Technology
Github Skills (14)
amazon-dynamodb10
databases10
c-language10
scylla10
dynamodb10
cprogramming-language10
cpp10
base6410
relational-databases10
nosql10
sql-database10
database10
rapidjson9
cassandra9
Programming languages (7)
Github contributions (5)
scylladb/scylladb
Nov 2022 - Jan 2023
NoSQL data store using the seastar framework, compatible with Apache Cassandra
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:721 reviews, 14 commits, 62 PRs in 2 months
Contributions summary:Marcin contributed to the ScyllaDB database, specifically focusing on the "alternator" component, a system designed to be compatible with Apache Cassandra and Amazon DynamoDB. Their work involved fixing bugs related to Global Secondary Index (GSI) range keys and other related index functionalities. Additionally, the user made performance improvements by enabling inlining in the rapidjson library and fixed base64 decoding issues for correct handling of binary data. These changes improve the reliability and performance of the database.
cppnosqlseastarcassandrasql
nuivall/scylladb
Nov 2022 - Apr 2025
NoSQL data store using the seastar framework, compatible with Apache Cassandra
Contributions:456 pushes, 95 branches in 2 years 5 months
nosqlseastarcassandrasqldata-store
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