Gellért Peresztegi-nagy
Software Engineer at Redpanda Data
Watford, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolGellért Peresztegi-nagy is a software engineer with 10 years’ experience specializing in concurrent and distributed systems, currently working at Redpanda Data on a high-performance streaming platform. He has a track record building low-latency, high-throughput services—previously helping operate systems handling millions of QPS at Quantcast—and contributes to core C++ and DevOps codepaths. His open-source work on Seastar and Redpanda demonstrates practical improvements to HTTP handling, admin APIs, and monitoring integrations in widely used, performance-focused projects. A Cambridge computer science graduate, he combines backend systems craftsmanship with test automation and infrastructure-level features like quota management, bringing a pragmatic focus on reliability and observability. An interesting detail: he moves fluidly between languages and layers, from Python test suites to C++ protocol plumbing, which lets him drive end-to-end improvements in production systems.
10 years of coding experience
3 years of employment as a software developer
Bachelor of Arts - BA Computer Science, Bachelor of Arts - BA Computer Science at University of CambridgeMathematics and Computer Science Prep, Mathematics and Computer Science Prep at Milestone Institute
English, Hungarian, German
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (22)
storage-engine10
c-language10
back-end-development10
async10
http10
kafka10
redpanda10
seastar10
stream-processing10
cprogramming-language10
streaming10
apidoc9
devops9
aio9
api9
Programming languages (8)
Github contributions (5)
redpanda-data/redpanda
Feb 2024 - Apr 2025
Redpanda is a streaming data platform for developers. Kafka API compatible. 10x faster. No ZooKeeper. No JVM!
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:842 reviews, 281 PRs, 145 pushes in 1 year 1 month
Contributions summary:Gellért's contributions focused on enhancing the Redpanda streaming data platform. They implemented path parameter parsing for the admin API and added tests for user management functionalities via the rpk tool. These changes involved modifying C++ code for the admin API, and Python code within test suite, demonstrating a focus on backend development and test automation. Moreover, they extracted topic configuration code and introduced new features related to quota management for client connections, indicating backend and infrastructure work.
realtimezookeeperdata-platformkafka-api10x
scylladb/seastar
Feb 2024 - Sep 2024
High performance server-side application framework
Role in this project:Back-end Developer
Back-end DeveloperContributions:14 reviews, 3 PRs, 25 comments in 6 months
Contributions summary:Gellért primarily contributed to the `seastar` framework's HTTP functionality. Their work included adding a new path decoding method, refactoring query parameter handling, and implementing a `get_path_param` method to extract decoded path parameters. They also deprecated a path parameter method. Additionally, the user contributed to the prometheus integration by implementing the sanitization of the label value and improving the formatting. These changes suggest a focus on improving HTTP request handling and monitoring capabilities within the framework.
seastarc-plus-plusdpdkframeworkperformance
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