Emil Kleszcz
Service Manager, IT Department at CERN
Geneva, Geneva, Switzerland
Summary
👤
Senior🎓
Top SchoolEmil Kleszcz is a seasoned systems and big data engineer with 11 years of hands-on experience designing, operating, and evolving mission-critical data platforms at CERN. Currently Service Manager in the IT Department, he leads Hadoop, Spark, HBase and ElasticSearch/OpenSearch services across development-to-production lifecycles while mentoring peers and advising users on analytics pipelines. His background spans full-stack development, automation, and DevOps—Python, Java, Puppet, GitLab CI/CD, Kubernetes, OpenStack, Ceph and Terraform—used to deliver 100+ production clusters and observability at scale. Emil pairs academic rigor from top European universities with practical engineering, having built quota-management portals, automated testing/configuration tooling, and delivered community trainings. He is notable for combining deep low-level sysadmin expertise with product-minded service management in one of the world’s most demanding research infrastructures.
11 years of coding experience
5 years of employment as a software developer
Master's degree, Computer and Information Sciences, Master's degree, Computer and Information Sciences at Nanyang Technological UniversityMaster's degree, Computer Science, IT Systems Engineering, excellent with distinction, Summa Cum Laude, Master's degree, Computer Science, IT Systems Engineering, excellent with distinction, Summa Cum Laude at Warsaw University of TechnologyTU Delft
English, Polish, French
Github Skills (35)
opensearch9
java9
elasticsearch8
react8
analytics8
visualization8
search-engine8
meilisearch8
access-control7
dashboard7
opensearch-dashboards7
big-data7
restful7
puppet7
cli6
Programming languages (6)
Github contributions (5)
tr0k/tools-miscellaneous
Oct 2018 - Apr 2023
Contributions:5 pushes, 1 branch in 4 years 6 months
tr0k/sieve-mail-rules
Jun 2021 - Jun 2022
Contributions:8 pushes, 1 branch in 1 year
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