Klaudia Jazgar
Software Engineer at Splunk
Krakow, Lesser Poland Voivodeship
Summary
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Rockstar🎓
Top SchoolKlaudia Jazgar is a software engineer with 5 years of experience building backend systems, currently at Splunk in Krakow after progressing from junior roles at Splunk and Ericsson. She has hands-on blockchain engineering background from Nethermind, where she improved Ethereum JSON-RPC APIs and implemented eth_feeHistory and eth_gasPrice support in a widely used execution client. Klaudia combines strong applied mathematics training from Jagiellonian University with practical risk-analytics internships at UBS and State Street, giving her a rigorous, data-driven approach to engineering. She focuses on robust API design, error handling, and refactoring to make complex distributed systems more maintainable and testable. Notably, her open-source contributions targeted real-world node operator needs, reflecting both product empathy and low-level protocol familiarity.
5 years of coding experience
4 years of employment as a software developer
Bachelor's degree Computer Science and Mathematics, Bachelor's degree Computer Science and Mathematics at Jagiellonian University
Github Skills (14)
json-rpc10
api10
csharp10
ethereum10
apidoc10
back-end-development10
blockchain10
dotnet-core10
testing10
go9
docker8
kubernetes8
kubernetes-pods8
dockers8
Programming languages (3)
Github contributions (5)
NethermindEth/nethermind
Jul 2021 - Mar 2022
A robust execution client for Ethereum node operators.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 reviews, 52 commits, 24 PRs in 8 months
Contributions summary:Klaudia's contributions primarily focused on enhancing the Nethermind execution client for Ethereum node operators, with an emphasis on improving the JSON-RPC API. They implemented and updated example responses, parameters, and added new ones for various modules including Eth, Proof, and Trace. Furthermore, the user added the eth_feeHistory and eth_gasPrice functions to the EthCliModule and fixed issues with the maxPriorityFeePerGas implementation. The user's commits also involved refactoring code, improving error handling, and testing the API functionalities.
dotnetlinux-windowswindowsethereumblockchain
lemurkatta/fluffy-octo-carnival
Jul 2020 - May 2021
Contributions:2 PRs, 3 pushes, 1 branch in 10 months
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