Mario-leander Reimer
Managing Director CTO at QAware GmbH
Greater Munich Metropolitan Area Germany
Summary
👤
Senior🎓
Top SchoolMario-leander Reimer is a seasoned software leader and CTO with over a decade of experience guiding cloud-native architectures and engineering organizations from the Greater Munich area. As Managing Director and CTO at QAware, he blends strategic technology leadership with hands-on contributions to middleware and security—evidenced by open-source work on the widely used Payara Server improving JAR scanning performance, OpenAPI CORS support, and JWT/JWKS integration. He has progressed through technical and executive roles at QAware since 2009, pairing deep Java and distributed-systems expertise with product-minded stewardship. A passionate developer and architect who also teaches distributed computing, he brings a practical, performance-focused approach to building reliable, secure production systems while remaining an engaged open-source contributor and proud father.
10 years of coding experience
3 years of employment as a software developer
Dipl. Dipl.-Inf. (FH), Informatik, Dipl. Dipl.-Inf. (FH), Informatik at Hochschule RosenheimMaster of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at Staffordshire University
English, Spanish, German
Stackoverflow
1reputation
0reached
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Github Skills (13)
jakartaee10
web-token10
javas10
microprofile10
jsonwebtoken10
java10
jwt10
multithreading9
openapi9
rest-api8
api-rest8
restful-api8
api-design8
Programming languages (16)
Github contributions (5)
payara/Payara
Dec 2017 - Feb 2019
Payara Server is an open source middleware platform that supports reliable and secure deployments of Java EE (Jakarta EE) and MicroProfile applications in any environment: on premise, in the cloud or hybrid.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 3 PRs, 27 comments in 1 year 3 months
Contributions summary:Mario-leander primarily focused on enhancing the Payara Server by addressing performance issues related to JAR scanning threads and adding functionality to the OpenApi configuration. Their contributions included optimizing thread pool usage for improved performance and adding CORS header support to the OpenAPI application. They also made modifications related to JWT authentication, specifically integrating the "kid" from the JWT header to retrieve matching public keys from JWKS. The user's changes touched various aspects of the Payara Server, including deployment, security, and microprofile configurations.
jakarta-eesecurepayaramicroservicesdeployments
lreimer/packtpub-building-javaee8-webservices-section.2
Jan 2018 - Nov 2018
Contributions:59 commits, 2 pushes in 9 months
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