Jacek Glen
Senior Protocol Engineer at Somnia
London, England, Poland
Summary
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Rockstar🎓
Top SchoolJacek Glen is a Senior Protocol Engineer based in London with two decades of commercial software experience and a current focus on smart contract and Ethereum protocol development. He has transitioned from building high-throughput, cloud-native banking and media systems to contributing to Ethereum clients (Erigon) and core research for the Ethereum Foundation, blending deep backend engineering with blockchain protocol work. Jacek has led technical teams and modernised delivery pipelines across industries—from reducing deployment times and costs at dunnhumby to architecting core mortgage integrations at Investec—demonstrating an ability to improve performance, automation and maintainability. His toolkit spans .NET, microservices, Azure/AWS, and low-level blockchain client development, enabling him to bridge traditional enterprise systems and cutting-edge decentralized infrastructures. Not obvious from titles alone, he repeatedly drives end-to-end solutions on greenfield projects, taking products from concept through production while prioritising testability and operational excellence. He brings a pragmatic, results-oriented approach to protocol engineering informed by broad domain experience in finance, insurance, music, gaming and data science.
10 years of coding experience
21 years of employment as a software developer
Course attendant, Programme in Management and Marketing, Course attendant, Programme in Management and Marketing at Akademia Leona KoźmińskiegoBachelor of Science, Computer Science, Bachelor of Science, Computer Science at Warsaw University of Technology
English, Polish
Stackoverflow
1,516reputation
116kreached
29answers
2questions
razor
top-5%
Github Skills (40)
ethereumjs10
javascript10
solidity10
frontier10
evm10
virtual-machine10
bytecode10
ethereum10
blockchain10
monorepo10
cpp10
razor9
dotnet9
linux9
typescript9
Programming languages (8)
Github contributions (5)
imapp-pl/nethermind
May 2022 - Nov 2024
Our flagship .NET Core Ethereum client for Linux, Windows, MacOs - full and actively developed.
Contributions:3 reviews, 1 PR, 21 pushes in 2 years 5 months
linux-windowswindowsethereumblockchainethereum-client
imapp-pl/benchmarking
Jan 2023 - Jan 2023
Benchmarking data for EVM ops and precompiles
Contributions:12 commits, 9 pushes in 25 days
opsbenchmarkingevmbenchmarkbenchmarks
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