Maciej Zimnoch
Senior Kubernetes Engineer at ScyllaDB
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolMaciej Zimnoch is a Senior Kubernetes Engineer based in Warsaw with 13 years of experience building reliable, production-grade distributed systems and cloud-native infrastructure. He blends deep Go and C++ roots with practical Kubernetes and operator expertise—currently shaping ScyllaDB’s operator and platform integrations while improving performance and build processes. His open-source contributions include meaningful fixes and features for rclone (memory and transfer accounting improvements) and gocqlx (lightweight transaction support and query ergonomics), showing a knack for stability and concise APIs. Previously he led a team of seven at CodiLime and has a track record of large-scale migrations and optimization work (including a 100TB blue-green Ceph migration), reflecting both hands-on coding and operational leadership. Collectedly, he’s a pragmatic engineer who favors measurable system improvements—memory pools, race fixes, and less verbose query patterns—over flashy one-offs.
13 years of coding experience
6 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at University of Wroclaw
Polish, English
Github Skills (42)
kubernetes10
query-builder10
back-end-development10
cassandra10
accounting10
scylla10
cicd10
go10
amazon-s310
gocql10
kubernetes-pods10
cloud-storage10
aws-s310
cql10
gocqlx10
Programming languages (9)
Github contributions (5)
scylladb/scylla-operator
May 2020 - Jan 2023
The Kubernetes Operator for ScyllaDB
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:9 releases, 2155 reviews, 540 commits in 2 years 8 months
Contributions summary:Maciej focused on improving the Scylla Operator's performance and stability by migrating to Go modules, updating dependencies, and refactoring code to leverage modern Go features. They modernized the build process with improvements to Dockerfile and makefile. The user also contributed to core API changes and refactoring to support Scylla Manager integration.
k8s-operatoroperatorscylladbk8skubernetes
scylladb/gocqlx
Apr 2020 - Jun 2020
All-In-One: CQL query builder, ORM and migration tool
Role in this project:Back-end Developer
Back-end DeveloperContributions:8 reviews, 5 commits, 4 PRs in 1 month
Contributions summary:Maciej primarily contributed to the `gocqlx` library by implementing and enhancing functionality related to Lightweight Transactions (LWT) within the context of Cassandra/ScyllaDB. They added new functions like `ExecCAS`, `GetCAS`, and their release variants, enabling conditional updates and inserts. The user's commits also included the addition of query shortcuts to reduce code verbosity by enabling shorter syntax for building and executing CQL queries. Further contributions involved providing table schema helpers and the addition of context-aware query execution functions.
ormgocqlmigration-tooldatabasepostgresql
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