Kamil Olszewski
Software Engineer at Snowflake
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolKamil Olszewski is a software engineer with nine years of experience building data-oriented back-end systems and CI/CD pipelines, currently contributing at Snowflake from Warsaw. He has strong practical experience in data processing and orchestration—improving DAG performance and workflow scheduling with Apache Airflow—and has applied those skills across cloud and analytics environments. Kamil is an active open-source contributor to high-profile projects like Apache Beam, where he implemented BigQuery performance tests and helped shape CI jobs for reliable benchmarking. His background spans NLP model tooling, automation with Jenkins and Docker, and a solid academic foundation in mechatronics and computer science, which informs a pragmatic approach to systems performance and automation. Colleagues describe him as a detail-focused engineer who blends data infrastructure know-how with measurable improvements in testability and operational efficiency.
9 years of coding experience
3 years of employment as a software developer
Engineer's degree, Mechatronics, Robotics, and Automation Engineering, A+, Engineer's degree, Mechatronics, Robotics, and Automation Engineering, A+ at Warsaw University of Technology
English, German, Russian, Polish
Github Skills (11)
dataflow-programming10
bigquery10
dataflow10
python10
performance-testing10
cicd9
jenkins-ci9
jenkins9
javas8
java8
go6
Programming languages (3)
Github contributions (5)
apache/beam
May 2019 - Dec 2020
Apache Beam is a unified programming model for Batch and Streaming data processing.
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:89 reviews, 195 commits, 213 PRs in 1 year 7 months
Contributions summary:Kamil contributed to the performance testing of BigQuery read/write operations, adding tests for both functionalities. The code changes included implementing and integrating performance tests using SyntheticSource and modifying existing load tests to ensure their efficiency. Furthermore, they worked on the Continuous Integration/Continuous Deployment (CI/CD) pipeline, creating and updating Jenkins job configurations for various testing suites.
golangpythonstreaming-databeambatch
kamilwu/beam
May 2019 - Dec 2020
Apache Beam
Contributions:8 PRs, 562 pushes, 277 branches in 1 year 7 months
beamapachebig-datajavaapache-beam
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