Zoltán Baranyi
Co-Founder at Vectroid
Szada, Central Hungary
Summary
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RockstarZoltán Baranyi is a seasoned software engineer and co-founder with over 17 years of Java-focused experience building distributed, low-latency, highly concurrent systems. He has deep expertise in database internals, memory and JVM/OS/CPU interactions, and has driven core storage and replication features at Hazelcast, including work on tiered storage, native memory management, and WAN delta synchronization. Zoltán combines a mechanical-sympathy approach to performance with a strong emphasis on quality and stability, informed by hands-on research into persistent memory, NUMA, and JVM GC behavior. His background spans trading systems, telecommunications and government domains, and includes leadership roles delivering highly available, production-grade components and observability tooling. An active open-source contributor, he made targeted improvements to Hazelcast’s internal locking and ring buffer implementations, revealing a practical focus on debuggability and core data-structure robustness. Based in Central Hungary, he now channels this systems-level expertise into building Vectroid as a technical founder.
9 years of coding experience
24 years of employment as a software developer
Hungarian, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (7)
data-structures10
javas10
distributed-systems10
data-structure10
java10
concurrency10
logging9
Programming languages (4)
Github contributions (5)
hazelcast/hazelcast
Jan 2018 - Nov 2022
Hazelcast is a unified real-time data platform combining stream processing with a fast data store, allowing customers to act instantly on data-in-motion for real-time insights.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:374 reviews, 225 commits, 389 PRs in 4 years 10 months
Contributions summary:Zoltán's commits primarily focused on implementing and refining features related to the internal locking mechanism within the Hazelcast platform. They added detailed logging for various operations like lock creation, acquisition, and release, with contextual information to aid in debugging. Additionally, the user made changes to the ring buffer data structure, addressing issues related to store errors and improvements to the documentation. The changes touched upon several core data structure components.
computationstream-processingbigtablereal-timestreaming-data
blazember/hazelcast
Jan 2018 - Nov 2023
Open Source In-Memory Data Grid
Contributions:1 PR, 600 pushes, 393 branches in 5 years 10 months
data-gridin-memorymemorygrid
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