Miha Zupan
Senior Software Engineer at Microsoft
Prague, Prague, Czechia
Summary
🤩
Rockstar🎓
Top SchoolMiha Zupan is a Senior Software Engineer based in Prague with nine years of experience building high-performance .NET systems, currently contributing at Microsoft. He specializes in backend performance and reliability, with notable work on core projects like YARP, ASP.NET Core and the .NET runtime where he reduced allocations, improved HTTP/2 and Kestrel behavior, and added telemetry for production observability. An active open-source maintainer, he has improved Markdig parsing and the Telegram.Bot client, demonstrating attention to correctness, tests, and edge-case handling. Colleagues rely on him for subtle performance wins—memory optimizations and cancellation-aware APIs—that materially improve throughput and resiliency. Comfortable navigating both product code and deep runtime internals, he blends pragmatic engineering with a passion for squeezing out measurable performance.
9 years of coding experience
High School Diploma, Regular/General High School/Secondary Diploma Program, High School Diploma, Regular/General High School/Secondary Diploma Program at Gimnazija Bežigrad
Stackoverflow
114reputation
11kreached
10answers
0questions
Github Skills (39)
markdown10
reverse-proxy10
apidoc10
net10
http10
telegram-bot-api10
dotnet10
asp-net-core10
asp-net10
api10
markdown-it10
parsing10
commonmark10
performance-optimization10
parse10
Programming languages (12)
Github contributions (5)
dotnet/yarp
Sep 2020 - Jan 2023
A toolkit for developing high-performance HTTP reverse proxy applications.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 releases, 629 reviews, 185 commits in 2 years 4 months
Contributions summary:Miha primarily contributed to the core functionality of the YARP reverse proxy, focusing on performance and reliability. Their work included implementing and updating CredScan suppressions, improving code by optimizing memory usage and reducing allocations, and enhancing the handling of headers for both requests and responses. They also added important telemetry instrumentation, including performance monitoring, and addressed edge cases related to WebSocket handling.
http-performancedevelopingproxyreverse-proxyperformance
xoofx/markdig
Aug 2018 - Jul 2022
A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET
Role in this project:Back-end Developer
Back-end DeveloperContributions:69 reviews, 249 commits, 61 PRs in 3 years 11 months
Contributions summary:Miha's contributions primarily involve modifying and expanding the Markdig library's functionality. They focused on enhancing the Markdown parser by introducing features such as exposing the number of lines in a document and improving the handling of link and footnote reference definitions. Furthermore, the user addressed issues related to the parsing of lists, and autolinks, adding tests to validate the implementation of several features.
dotnetcommonmarkcompliantmarkdown-parsergfm
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