Markus Sabadello
Founder at Danube Tech
Vienna, Austria
Summary
🤩
Rockstar🎓
Top SchoolMarkus Sabadello is a founder and software engineer with 14 years’ experience focused on sovereign digital identity, decentralization, and privacy-forward communication systems. Based in Vienna, he leads Danube Tech building protocols and services around personal data, XDI, FreedomBox, and blockchain-based identifier registration while influencing standards as a member of the Decentralized Identity Foundation and Sovrin’s Technical Governance Board. A hands-on back-end contributor to high-profile open-source projects such as Hyperledger Indy and the DID Universal Resolver, he has implemented low-level API bindings and drivers for multiple DID methods. His background in peace and conflict studies gives him a rare interdisciplinary perspective on how identity tech intersects with civil rights and geopolitical risks. Known for turning protocol work into practical deployments, he blends technical depth in distributed ledgers with policy-minded thinking on privacy and governance.
14 years of coding experience
3 years of employment as a software developer
Vienna University of TechnologyMaster of Arts - MA Peace and Conflict Studies, Master of Arts - MA Peace and Conflict Studies at European Peace University
English, German, French, Georgian
Github Skills (16)
c1710
javas10
json-ld10
rust10
api10
http-api10
hyperledger-indy10
c1110
apidoc10
documentation10
java10
technical-writing10
dockers9
docker9
ssi8
Programming languages (21)
Github contributions (5)
decentralized-identity/universal-resolver
Aug 2017 - Sep 2022
Universal Resolver implementation and drivers.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:35 reviews, 533 commits, 103 PRs in 5 years 2 months
Contributions summary:Markus's commits focused on implementing and improving drivers for the Universal Resolver, specifically those related to DID methods. They made changes to support various drivers, including those for BTCR, ERC725, and SOV methods, and updated code for the integration of new features. The commits involved modifying existing codebase to improve the handling of HTTP requests, Docker files, and the integration with underlying technologies like Indy and Blockstack. They also added core functionality by implementing methods and functionalities.
driverwg-iddecentralized-identifiersuniversal-resolver
w3c/did-extensions
Jun 2020 - Nov 2022
Decentralized Identifier Ecosystem Extensions
Role in this project:Technical Writer
Technical WriterContributions:66 reviews, 35 commits, 35 PRs in 2 years 6 months
Contributions summary:Markus primarily contributed to the documentation of the `did-extensions` repository, focusing on refining and expanding the specification documents. Their work included adding examples, updating metadata definitions, correcting capitalization, reorganizing sections, and integrating new parameters like `signed-ietf-json-patch`, and `alsoKnownAs`. They also made updates to the DID Core links and error codes.
did-wgdidspec
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