Stefan Anzinger
Senior Software Engineer at Dynatrace
Linz, Upper Austria
Summary
🤩
Rockstar🎓
Top SchoolStefan Anzinger is a Senior Software Engineer with 12+ years of hands-on experience building Java-based systems, R&D on JVM JIT technology at Oracle, and current delivery work at Dynatrace and as a freelancer. He combines deep platform knowledge—from Eclipse RCP and J2EE stacks to performance tuning on Solaris/SPARC and cross-compiling for System z—with practical experience customizing financial systems like GoldenSource and SunGard FrontArena. An active open-source contributor, he has improved GraalVM components (dashboard and points-to analysis), enabled aarch64 support in GraalJS builds, and refined GraalPython and JRuby platform support, reflecting a focus on runtime internals and cross-platform CI. Comfortable collaborating across Europe, North America and Southeast Asia, Stefan brings a pragmatic blend of low-level systems engineering and enterprise integration experience that often surfaces in performance and build-system improvements.
12 years of coding experience
15 years of employment as a software developer
Lehre Medientechnik und -designMSc, Computer Science, MSc, Computer Science at Johannes Kepler Universität Linz
Stackoverflow
136reputation
4kreached
1answer
0questions
Github Skills (29)
parserator10
modular-system10
javascript10
parser10
performance-monitor10
jvm10
graalvm10
python10
testing10
hocon10
configuration-management10
cicd10
java10
ruby10
javas10
Programming languages (4)
Github contributions (5)
oracle/graal
Jan 2016 - Nov 2020
GraalVM compiles Java applications into native executables that start instantly, scale fast, and use fewer compute resources 🚀
Role in this project:
Backend Developer
Backend DeveloperContributions:10 releases, 12 PRs, 234 comments in 4 years 10 months
Contributions summary:Stefan contributed to the GraalVM project, specifically focusing on the dashboard and points-to analysis functionalities. They added a dashboard dumper in BGV format, enhancing the project's ability to visualize and analyze data. These changes involved modifications to Java files within the substratevm module, indicating a focus on improving data presentation and analysis capabilities within the GraalVM ecosystem. The user's contributions directly impacted the project's ability to provide insights into program behavior.
polyglotpythonjavascriptrubyanywhere
oracle/graaljs
Aug 2018 - Aug 2021
GraalJS – A high-performance, ECMAScript compliant, and embeddable JavaScript runtime for Java
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:17 commits, 1 comment in 3 years
Contributions summary:Stefan primarily focused on enabling support for the aarch64 architecture across various components of GraalJS and Graal Node.js. They modified CI/CD configurations to include aarch64 targets and updated build processes, including the enabling of gate tests and adjustments to stack sizes. Furthermore, the user addressed issues related to integer casting in the graal_isolate component. These changes indicate involvement in build automation and platform support.
polyglotnode-jscompliantjavascriptinteroperability
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