Jan Stastny
Principal Software Developer at IBM
South Moravia, Czechia
Summary
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RockstarJan Stastny is a Principal Software Developer with 11 years of experience, currently driving platform and delivery engineering at IBM from South Moravia, Czechia. He specializes in CI/CD, DevOps, and automation for large open-source Java projects, having improved pipelines and release processes for high-profile Apache projects like Drools, Kogito Runtimes and OptaPlanner. Jan blends back-end and test automation expertise—refactoring integration tests, stabilizing Docker-based workflows, and increasing unit test coverage for serverless workflow components. His contributions show a pragmatic focus on dependency management, Maven and Jenkins automation, and production-ready deployment scripts. Colleagues rely on him to bridge development and release operations, often taking ownership of complex build and integration issues across distributed teams. Notably, his work has helped streamline cloud-native business automation and AI constraint-solver projects used widely in enterprise scheduling and rules engines.
11 years of coding experience
English, French
Github Skills (28)
docker10
groovy10
dockers10
cicd10
java10
javas10
release-management10
automation10
ci-cd-pipeline10
maven10
jenkins10
jenkins-ci10
automations10
deployment-automation10
rule-engine9
Programming languages (8)
Github contributions (5)
apache/incubator-kie-kogito-runtimes
May 2020 - Jun 2022
Kogito Runtimes - Kogito is a cloud-native business automation technology for building cloud-ready business applications.
Role in this project:
Back-end Developer & Test Automation Engineer
Back-end Developer & Test Automation EngineerContributions:148 reviews, 22 commits, 76 PRs in 2 years
Contributions summary:Jan primarily focused on improving the test coverage and stability of the Kogito Runtimes project. They refactored and moved test cases, particularly those involving Docker, to the Maven failsafe plugin. The user also contributed to fixing local build issues in integration tests by addressing missing dependencies and configurations. Furthermore, the user enhanced unit test coverage for the JQ and JSONPath expression handlers within the serverless workflow components.
kogitoknativebusiness-automationrule-enginedrools
apache/incubator-kie-drools
Sep 2020 - Mar 2025
Drools is a rule engine, DMN engine and complex event processing (CEP) engine for Java.
Role in this project:DevOps Engineer & Automation Engineer
DevOps Engineer & Automation EngineerContributions:65 reviews, 54 PRs, 25 pushes in 4 years 6 months
Contributions summary:Jan primarily focused on improving the continuous integration and continuous delivery (CI/CD) pipeline for the Drools project. Their contributions included setting up and configuring Jenkins jobs, updating deployment configurations, and modifying build scripts. They also addressed issues related to Maven settings and dependency management within the CI/CD environment, enhancing the automation and streamlining the release processes. The user's work involved migrating configurations and integrating the project with Apache infrastructure.
droolsbusiness-rulesdmn-engineevent-processingcomplex-event-processing
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