Botond Dénes
Development Team Lead at ScyllaDB
Sălăţig, Sălaj, Romania
Summary
🤩
Rockstar🎓
Top SchoolBotond Dénes is a Development Team Lead at ScyllaDB with 11 years of experience building high-performance, low-latency back-end systems. He is an active contributor to the Seastar framework and ScyllaDB, specializing in low-level system programming, concurrency, memory management and database internals. His hands-on work ranges from implementing lazy string conversion of pointers and detach() stream methods to refactoring backtrace logic by converting instruction pointers to shared-object relative addresses. Since 2017 he has combined leadership and implementation to improve stability and performance—adding virtual table init logic, better error handling, enhanced circular buffers and smarter pointer APIs. Based in Sălăţig, Romania and educated in Computer Science at Sapientia Hungarian University, he brings deep C++/systems expertise to production-scale NoSQL engineering.
12 years of coding experience
Bachelor of Engineering - BE, Computer Science, Bachelor of Engineering - BE, Computer Science at Sapientia Hungarian University Of Transylvania [EMTE]
Stackoverflow
610reputation
13kreached
21answers
1question
Github Skills (25)
asynchronous10
c-language10
system-programming10
nosql10
async10
low-level10
databases10
seastar10
performance-optimization10
sys10
database-design10
lowlevel10
concurrency10
database10
c-programming-language10
Programming languages (9)
Github contributions (5)
scylladb/scylladb
Jul 2017 - Jan 2023
NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:4169 reviews, 2157 commits, 623 PRs in 5 years 7 months
Contributions summary:Botond focused on enhancing the stability and functionality of the ScyllaDB NoSQL data store. Their contributions involved implementing and refactoring core functionalities like initializing virtual tables, creating and modifying data structures. They also made improvements to internal components of the database, such as the memory management logic, and added database-level features. Their changes contributed to the performance of the database and included improvements to the error handling system.
cppnosqlseastarcassandrasql
scylladb/seastar
Aug 2017 - Nov 2022
High performance server-side application framework
Role in this project:Back-end Developer
Back-end DeveloperContributions:69 reviews, 136 commits, 14 PRs in 5 years 4 months
Contributions summary:Botond primarily contributed to enhancing the Seastar framework, focusing on low-level system programming and concurrency aspects. Their work included implementing a mechanism for lazy string conversion of pointers, adding detach() methods to input and output streams for better integration with custom implementations. They also refactored and improved backtrace functionality, converting instruction-pointers to shared-object relative addresses. Furthermore, they addressed various warnings, added smart-pointer methods and features to foreign_ptr to improve usability and extended the circular_buffer class.
seastarc-plus-plusdpdkframeworkperformance
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