Honza Král
Founder CTO at Sidecar
Prague, Czechia
Summary
🤩
Rockstar🎓
Top SchoolHonza Král is a founder-CTO and principal software engineer with 19 years of experience building scalable backend systems, cloud platforms, and developer-centric tooling from Prague. He combines hands-on engineering—having authored core pieces of elasticsearch-py and elasticsearch-dsl-py and contributed to Django and other high-profile open-source projects—with leadership roles that range from founding startups to shaping Elastic’s consulting practice. Honza excels at designing architectures for complex search and observability systems, automating infrastructure (Terraform, Kubernetes, GCP/AWS) and driving platform maturity through CI/CD and monitoring. He regularly bridges product, customers, and engineering teams as a keynote speaker and developer advocate, emphasizing enablement, mentorship and DEI outreach. His background in test automation and robustness improvements reflects a pragmatic focus on reliability and maintainability under load. Now leading Sidecar, he helps companies develop GenAI and search expertise while keeping developer experience front and center.
19 years of coding experience
16 years of employment as a software developer
Gymnazium Jana KepleraCharles University
Czech, English, German
Github Skills (44)
algorithm10
unit-testing10
caching10
algorithms10
pytest10
python10
back-end-development10
django10
testing10
amazon-elasticsearch10
modeler10
http10
modello10
forms10
elasticsearchquery10
Programming languages (14)
Github contributions (5)
honzakral/django-threadedcomments
Mar 2009 - Apr 2015
django-threadedcomments is a simple yet flexible threaded commenting system for Django.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:66 commits, 1 PR, 1 push in 6 years 1 month
Contributions summary:Honza primarily worked on the Django-threadedcomments project, contributing to the core functionality of the threaded commenting system. Their commits focused on refactoring and bug fixes within the models, improving the tree structure logic, and porting tests. They also implemented template changes and added a command to migrate comments. Their work included enhancing the test suite for better coverage and accuracy.
pythondjangocommenting-systemthreadedcommenting
elastic/elasticsearch-dsl-py
Mar 2014 - Apr 2020
High level Python client for Elasticsearch
Role in this project:Back-end Developer
Back-end DeveloperContributions:829 commits, 207 PRs, 589 pushes in 6 years 2 months
Contributions summary:Honza contributed to the initial project structure and implementation by setting up the project's basic files. They also implemented the core logic of Match and Boolean queries for use in Elasticsearch-DSL-Py, demonstrating their involvement in developing the core search functionality. Furthermore, they contributed to creating documentation templates for Sphinx build configurations.
pythonelastichigh-levelpython-clientelasticsearch
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