Lenny Primak
President CTO at Flow Logix, Inc
Lincoln, Nebraska, United States
Summary
🤩
RockstarLenny Primak is a seasoned CTO, software architect and principal developer with over two decades leading high-performance, massively scalable server and kernel-level systems from Lincoln, Nebraska. As President/CTO of Flow Logix and a long-time open-source contributor, he blends deep Java, C/C++ and Groovy expertise with pragmatic API, component and refactoring practices to deliver near-5‑9s uptime for mission-critical services. He is active in prominent projects such as Apache Shiro, Hazelcast, Payara and Arquillian—improving cluster management, testing infrastructure and Jakarta EE integration—and chairs Apache Shiro PMC. Outside software, Lenny is an experienced jet pilot (6,500 flight hours, E-145 type-rated), a background that informs his rigorous attention to safety, redundancy and operational discipline. Known for building interoperable, well-documented frameworks and tooling, he pairs hands-on engineering with strategic architecture to make complex distributed systems reliable and maintainable.
11 years of coding experience
8 years of employment as a software developer
English, Russian
Stackoverflow
1reputation
38kreached
10answers
3questions
Github Skills (35)
caching10
jvm10
shiro10
back-end-development10
session-management10
testng10
testing10
hazelcast10
distributed-systems10
java10
distributed-computing10
javas10
junit10
arq10
cluster-manager10
Programming languages (12)
Github contributions (5)
apache/shiro
Sep 2022 - Jan 2023
Apache Shiro
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 releases, 429 reviews, 70 commits in 4 months
Contributions summary:Lenny primarily focused on improving the core functionality of Apache Shiro by addressing session-related exceptions within the `DelegatingSubject` class, adding comments to explain the code changes, and moving classes to avoid split package issues. The user also updated the minimum required JDK and added Jakarta EE integration. The contributions reflect a focus on improving the project's stability, compatibility, and maintainability.
shiroapacheapache-shirohtaccessnetwork-server
payara/Payara
Jan 2016 - Nov 2022
Payara Server is an open source middleware platform that supports reliable and secure deployments of Java EE (Jakarta EE) and MicroProfile applications in any environment: on premise, in the cloud or hybrid.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1 release, 227 reviews, 352 commits in 6 years 11 months
Contributions summary:Lenny's commits primarily focused on implementing improvements to EJB (Enterprise JavaBeans) deployment and handling within the Payara Server project. Contributions included enhancements to ID generation during EJB deployments, such as unique ID generation for EJB descriptors, and fixes for CDI event bus and clustered singleton handling in Payara Micro. The user made further adjustments to accommodate JNDI lookups and resolved issues related to EJB timer initialization and the handling of resource lists. They also added a system property for controlling certificate-related checks for testing and development.
jakarta-eesecurepayaramicroservicesdeployments
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