Udo Klimaschewski
Solution Architecture Manager at Objectway
Lindau (Bodensee), Bavaria, Germany
Summary
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Rockstar🎓
Top SchoolUdo Klimaschewski is a seasoned software leader with 13+ years of formal experience and a career stretching back to the 1980s, currently shaping solution architecture and teams at Objectway from Lindau, Germany. He blends deep Java backend expertise with hands-on problem solving—evident in open-source contributions to the EvalEx expression evaluator where he fixed numeric edge cases and extended functionality with nested expressions and trigonometric functions. Udo has progressed from programmer and product manager roles to senior engineering and architectural leadership at firms like ACTICO and Vision Flow, bringing a pragmatic, mathematically grounded approach from his studies at TU Dortmund. Known for turning intricate requirements into robust, maintainable systems, he pairs long-term operational perspective with active code-level involvement and a knack for improving reliability in core libraries.
13 years of coding experience
40 years of employment as a software developer
Mathematik, Mathematik at TU Dortmund University
German, English
Stackoverflow
5,175reputation
1.0mreached
158answers
5questions
java
top-5%
Github Skills (20)
evaluation10
expressions10
java10
javas10
eval10
evaluator10
expression10
trigonometry9
data-structures8
data-structure8
algorithms8
unit-testing8
algorithm8
gnupg6
logging6
Programming languages (4)
Github contributions (5)
ezylang/EvalEx
Dec 2012 - Oct 2022
EvalEx is a handy expression evaluator for Java, that allows to evaluate simple mathematical and boolean expressions.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 39 reviews, 170 commits in 9 years 11 months
Contributions summary:Udo primarily contributed to improving the `EvalEx` Java expression evaluator library. Their commits addressed bug fixes related to expression evaluation, including incorrect rounding and division-by-zero errors in the SQRT function. They implemented new features, like allowing nested expressions in the `with()` method and allowing digits and underscores in variable names. The user also added trigonometric functions like ASIN, ACOS, and ATAN, further expanding the library's capabilities.
boolean-expressionexpression-evaluatorjavaexpression-parser
ezylang/EvalEx-big-math
Oct 2022 - Oct 2024
EvalEx big-math extension for math functions (pow, sqrt, log, sin, ...)
Contributions:24 PRs, 26 pushes, 22 branches in 2 years
sqrt
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