Jan Prukner
Senior Software Engineer at SentinelOne
Brno, Southeast, Czechia
Summary
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Rockstar🎓
Top SchoolJan Prukner is a Senior Software Engineer based in Brno with a decade of experience focusing on performance-driven back-end and database engineering. He has architected and led projects from startups to enterprises, most recently at SentinelOne after roles at 3Pillar Global and building his own PaaS-focused company. An active open-source contributor, Jan has improved Percona's PMM monitoring tooling by hardening EXPLAIN usage, adding Kubernetes log retrieval endpoints, and fixing disk-size overflow issues with uint64—demonstrating attention to correctness at scale. He emphasizes performance as a primary product feature, believing that no other capability matters if users won’t tolerate latency or inefficiency. Jan also teaches and consults, blending hands-on coding with mentorship and practical operational insight. He publishes technical thoughts on Substack and shares code on GitHub, signaling a commitment to continual learning and community contribution.
10 years of coding experience
3 years of employment as a software developer
Computer and Information Sciences, General, 2, Computer and Information Sciences, General, 2 at Vysoké učení technické v Brně
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (7)
database-management10
go10
postgresql10
mysql10
kubernetes-pods9
kubernetes9
haproxy8
Programming languages (16)
Github contributions (5)
percona/pmm
Jan 2021 - Jan 2022
Percona Monitoring and Management: an open source database monitoring, observability and management tool
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:40 reviews, 34 commits, 31 PRs in 1 year
Contributions summary:Jan primarily focused on improving the database monitoring and management tool. Their contributions included enhancing the MySQL explain action by wrapping EXPLAIN queries within transactions to handle potential side effects of stored functions. They added support for HAProxy parameters and upgraded the DBaaS API by renaming methods for credentials retrieval and adding the option to upgrade the database. They also added functionality to retrieve logs, which includes the implementation of new API endpoints, for Kubernetes clusters, and incorporated the ability to utilize uint64 to represent the disk sizes within the resources object to avoid overflow issues.
perconadatabase-monitoringobservabilitypmmdatabase
jprukner/remindmec
Sep 2022 - Jan 2024
Contributions:70 pushes, 3 branches in 1 year 4 months
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