Stefan Winter
Founder And CEO at NSP Network Security Proliferation UG (haftungsbeschränkt)
Luxembourg
Summary
👤
Senior🎓
Top SchoolStefan Winter is a seasoned founder and CTO with 16+ years building global authentication and roaming infrastructures for research and education, best known for driving eduroam R&D and co-chairing the IETF RADIUS Extensions working group. He combines deep protocol-level expertise in RADIUS, EAP and IEEE 802.1X with hands-on experience operating tooling like the 802.1X Configuration Assistant and contributing backend improvements to widely used open-source projects such as SimpleSAMLphp. Based in Luxembourg, he advises the European Commission and leads technology at RESTENA Foundation, bridging standardisation, implementation and deployment across thousands of institutions worldwide. Unusually, his career blends operational consultancy, academic teaching on secure network admission, and formal protocol standardisation — providing both practical deployments and the standards that enable them.
16 years of coding experience
Dipl.Inform. Computer Science, Dipl.Inform. Computer Science at Karlsruhe Institute of Technology (KIT)
English, French, Luxembourgish, German
Github Skills (7)
user-authentication10
php10
authentication10
gettext10
saml10
proxy9
configuration-management9
Programming languages (13)
Github contributions (5)
simplesamlphp/simplesamlphp
Jan 2016 - Mar 2020
SimpleSAMLphp is an application written in native PHP that deals with authentication.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:7 commits, 9 PRs, 46 comments in 4 years 2 months
Contributions summary:Stefan primarily focused on back-end improvements and configurations for the SimpleSAMLphp project. They made updates to `config.php` related to proxy authentication and domain restrictions. Furthermore, the user modified `HTTP.php` to include proxy authorization in HTTP requests and also worked on converting translations to gettext style with a script. These modifications highlight contributions to the core functionality, including networking, configuration, and internationalization aspects of the application.
securityphpauthenticationsaml2saml
GEANT/CAT
Feb 2014 - Jan 2023
CAT - the Configuration Assistant Tool for Enterprise Wi-Fi networks such as eduroam
Contributions:14 releases, 1 review, 3354 commits in 9 years
eduroamassistantaircrack-ngcaptive-portalwi-fi
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.