Klaus Kiefer
Software-Architekt at SAP
Frankfurt Rhine-Main Metropolitan Area Germany
Summary
🤩
Rockstar🎓
Top SchoolKlaus Kiefer is a seasoned Software-Architekt with over 10 years of professional experience and a long tenure at SAP, where he designs and guides complex software systems. Grounded in rigorous academic training in mathematics and computer science from Technische Universität Kaiserslautern and Universität des Saarlandes, he blends formal problem-solving with practical architecture. He contributes to notable open-source projects such as CloudFoundry UAA, focusing on dependency upgrades, code quality, and security-related token enhancements. Klaus is skilled at maintaining large, enterprise-grade back-end systems and reducing technical debt through targeted refactors and sonar-driven fixes. Based in the Frankfurt Rhine-Main area, he brings a steady, research-informed approach to scalable authentication and cloud-native services. Colleagues describe him as a methodical architect who uncovers subtle inefficiencies and turns them into long-term maintainable solutions.
10 years of coding experience
Diplom, Mathematik, Diplom, Mathematik at Technische Universität KaiserslauternGraduiertenkolleg, Informatik, Graduiertenkolleg, Informatik at Universität des Saarlandes
Github Skills (13)
spring-boot10
javas10
flyway10
api10
backend10
back-end-development10
apidoc10
oauth10
java10
oauth2-server10
oid9
openid-connect9
openidc9
Programming languages (4)
Github contributions (5)
cloudfoundry/uaa
Apr 2016 - Jun 2016
CloudFoundry User Account and Authentication (UAA) Server
Role in this project:
Back-end Developer
Back-end DeveloperContributions:47 reviews, 3 commits, 18 PRs in 1 month
Contributions summary:Klaus primarily contributed to the upgrade and maintenance of the CloudFoundry User Account and Authentication (UAA) Server. Their work focused on updating dependencies, specifically upgrading Flyway to version 4.0. They also added the `UaaTokenEnhancer` interface and related features. Further contributions included addressing sonar findings and fixing possibly unnecessary method calls within the server's code.
openid-connectuaaoidcaccountauthentication
klaus-sap/uaa
Oct 2023 - Jan 2024
CloudFoundry User Account and Authentication (UAA) Server
Contributions:48 pushes in 3 months
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.