Daniel Stahr
Principal Software Engineer at Microsoft
Czechia
Summary
👤
Senior🎓
Top SchoolDaniel Stahr is a Principal Software Engineer with 16 years of experience building reliable, maintainable distributed systems and Java-heavy back ends, currently at Microsoft after senior engineering roles at Google. He combines deep practical expertise in refactoring, database performance and migrations with a pragmatic focus on developer productivity and durable software. Daniel is an active open-source contributor—his work on Duplicati improved database performance, autovacuum, and edge-case handling for encrypted cloud backups. Based in Czechia, he brings cross-domain curiosity, tinkering with electronics and embedded/IoT security outside professional work, which informs his systems-level thinking.
16 years of coding experience
12 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Univerzita Karlova v PrazeEight-year Gymnasium, Computer Science, Eight-year Gymnasium, Computer Science at Gymnazium Josefa Jungmanna Litomerice
Czech, English, French
Stackoverflow
4,219reputation
535kreached
131answers
13questions
unix
top-5%
substring
top-5%
sorting
top-5%
awk
top-5%
java
top-5%
linux
top-5%
Github Skills (19)
sqlite10
database-design10
dotnet-core10
csharp10
database-optimization10
unix9
awk9
java9
linux9
substring9
sorting9
backup9
encryption8
depth-first-search6
dictionary6
Programming languages (4)
Github contributions (5)
duplicati/duplicati
Mar 2017 - Aug 2017
Store securely encrypted backups in the cloud!
Role in this project:
Back-end Developer / Database Engineer
Back-end Developer / Database EngineerContributions:19 commits, 12 PRs, 15 comments in 5 months
Contributions summary:Daniel primarily contributed to the back-end aspects of the Duplicati project, focusing on database interactions and performance optimization. Their commits include fixing path renaming errors, improving database performance by removing inefficient queries and optimizing logging, and adding support for executing custom code during database updates. Additionally, they addressed an issue related to empty block handling and implemented the autovacuum option. They also worked on a related test file and fixed a query.
tno-backupsftptrust-no-one-backupencryptedcloud-backup
Danstahr/Hearthstone-Deck-Tracker
Feb 2019 - Dec 2023
A deck tracker and deck manager for Hearthstone on Windows
Contributions:3 pushes in 4 years 11 months
windowsdecktrackerhearthstonedeck-manager
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