Konrad Kokosa
Principal Software Engineer at Gritstep
Warsaw, Masovian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolKonrad Kokosa is a seasoned .NET architect, entrepreneur and Microsoft MVP with over a decade of hands-on experience building high-performance backend systems and developer tooling. He founded Crowdpub to experiment with decentralized, crowd-driven book publishing and co-founded DotNetos and Warsaw Web Performance Group to teach and evangelize .NET performance and diagnostics. Konrad has led AI agents and .NET/Ethereum core work at Nethermind, contributing low-level optimizations to a prominent Ethereum client, and now combines that blockchain experience with AI product work as Co-founder and Tech Lead at ResultAI. A frequent trainer, speaker and consultant, he blends mechanical-sympathy thinking with pragmatic architecture and performance troubleshooting across enterprise systems. Based in Warsaw, he pairs entrepreneurial risk-taking with deep protocol-level engineering—often surfacing non-obvious optimizations in serialization and runtime behavior.
10 years of coding experience
18 years of employment as a software developer
Magister (Mgr), Technologie informatyczne, Magister (Mgr), Technologie informatyczne at Warsaw University of Technology
Polish, English
Stackoverflow
16,720reputation
1.5mreached
435answers
7questions
garbage-collection
top-5%
recursion
top-5%
wcf
top-1%
linq
top-5%
lambda
top-5%
reflection
top-5%
Github Skills (27)
net10
dotnet10
data-structure10
asp-net10
wcf10
ethereum10
encoding10
blockchain10
dotnet-core10
data-structures10
csharp10
linq9
reflection9
algorithms9
webservice9
Programming languages (8)
Github contributions (5)
NethermindEth/nethermind
Jul 2019 - Aug 2022
A robust, high-performance execution client for Ethereum node operators.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:17 reviews, 6 commits, 7 pushes in 3 years 1 month
Contributions summary:Konrad's contributions primarily involve low-level optimizations and refactoring of core components within the Nethermind Ethereum client. The commits demonstrate a focus on improving the efficiency of data encoding and decoding, specifically related to RLP serialization and deserialization. The user implemented and refactored several methods for handling data structures like `ValueKeccak` and `Signature` and the associated modifications of the codebase also touches on blockchain-related tasks such as block header loading and data manipulation.
ethereumblockchainevmethereum-clienteth
kkokosa/runtime
Jan 2021 - Jul 2026
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
Contributions:4 pushes in 5 years 6 months
dotnetiotmobile
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