Zdeněk H
Lead Software Engineer at Vista
Prague, Czechia
Summary
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Rockstar🎓
Top SchoolZdeněk H is a Lead Software Engineer based in Prague with 17 years of experience building resilient .NET systems across startups and large teams, currently leading engineering at Vista. He brings deep backend expertise, performance tuning and threading/synchronization know-how, demonstrated by contributions to Microsoft’s vs-threading and benchmarking work in the language-ext functional library. His open-source fixes and analyzers in projects like StyleCopAnalyzers and aws-lambda-dotnet show a practical focus on code quality, logging, and async correctness that improve real-world developer tooling. Zdeněk’s career spans web applications at Skype to e-commerce at Vistaprint, giving him a strong product-facing engineering perspective. He combines hands-on implementation with architectural thinking, often surfacing subtle bugs via targeted tests and diagnostics. Colleagues rely on him for pragmatic performance trade-offs and for making libraries safer and easier to use.
17 years of coding experience
15 years of employment as a software developer
Bachelor's degree, Informatics, Bachelor's degree, Informatics at Czech University of Life Sciences PragueFaculty of Electrical Engineering, Czech Technical University in Prague
English, Czech
Stackoverflow
929reputation
46kreached
7answers
24questions
Github Skills (39)
benchmark10
performance-analytics10
performance-monitor10
multithreading10
async10
analyzer10
testing10
immutable-collections10
net10
aws-lambda10
dotnet-new10
dotnet10
benchmarking10
performance-measurement10
asp-net10
Programming languages (7)
Github contributions (5)
louthy/language-ext
Nov 2019 - Dec 2019
C# pure functional programming framework - come and get declarative!
Role in this project:
Back-end Developer / Performance Engineer
Back-end Developer / Performance EngineerContributions:14 commits, 2 PRs, 2 comments in 28 days
Contributions summary:Zdeněk focused on benchmarking and performance testing within the C# functional programming framework. Their primary contribution involved creating benchmarks for various data structures like HashMaps, HashSets, and Sets, comparing them with standard .NET implementations. They modified existing benchmarks to be generic, testing both value and reference types, and added new benchmarks for comprehensive performance analysis, including iteration and removal operations. The user's work directly targeted the core performance characteristics of the library's data structures.
functional-languagelanguage-extfunctional-programmingclass-librarybcl
aws/aws-lambda-dotnet
Sep 2019 - Jun 2020
Libraries, samples and tools to help .NET Core developers develop AWS Lambda functions.
Role in this project:Back-end Developer
Back-end DeveloperContributions:9 commits, 4 PRs, 17 comments in 9 months
Contributions summary:Zdeněk primarily focused on improving the logging functionality within the .NET Core AWS Lambda project. Their commits involve modifying the `LambdaLoggerOptions.cs` and the associated test files to incorporate new logging features. They implemented changes related to namespace prefix matching, handling of "Default" log categories, and refactoring code to use `var` where applicable. The user also updated project files to reference specific versions of Microsoft packages.
dotnetlambda-functionsaws-lambdaserverlessnet-core
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