Jakub Kaflik
Principal Software Engineer at ClickHouse
Poland
Summary
🤩
Rockstar🎓
Top SchoolJakub Kaflik is a Principal Software Engineer with 15 years of experience building scalable, cloud-native systems and leading engineering teams across Europe. He combines deep backend and database expertise—evidenced by contributions to the popular ClickHouse Go driver improving testing and read-only user access—with hands-on architecture work building OLX Europe’s platform on AWS. As a former engineering manager, he blends people leadership with technical ownership, enabling teams of 8+ to turn customer problems into robust solutions. His stack spans Go, Python, PHP and distributed datastores (MySQL, PostgreSQL, Elasticsearch, Redis, DynamoDB), and he brings a practical hacker’s curiosity to production-grade software. An attention to developer experience and testability sets him apart: he routinely improves tooling and access patterns that make systems safer and easier to operate.
15 years of coding experience
12 years of employment as a software developer
I LO Wyszków
English, Polish
Github Skills (6)
testing10
go10
sql10
clickhouse10
database9
databases9
Programming languages (10)
Github contributions (5)
ClickHouse/clickhouse-go
Dec 2022 - Jan 2023
Golang driver for ClickHouse
Role in this project:
Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:55 releases, 163 reviews, 66 commits in 1 month
Contributions summary:Jakub primarily contributed to the Go driver for ClickHouse, focusing on enhancing test capabilities and improving the driver's functionality. Their work involved adding features like read-only user connections for testing, indicating a focus on database interaction and access control. They implemented and tested read-only user functionality, expanded use cases, and modified code related to connection management and settings. This work directly impacts the driver's usability, testing coverage, and security aspects by adding a read-only user.
golangsqlclickhouseanalytics-databasedatabase
jkaflik/OpenMowerROS2
Sep 2023 - Dec 2024
Just another software stack for OpenMower lawn mower robot, but this time with ROS2!
Contributions:20 PRs, 62 pushes, 12 branches in 1 year 3 months
lawnmoweropenmowerroboticsrosros2
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