Ingo Wechsung
Senior IT Consultant at contexo Gesellschaft für Systemintegration mbH
Germany
Summary
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RockstarIngo Wechsung is a Senior IT Consultant based in Germany with 13 years of documented experience and a decades-long technical career stretching back to system programming in the 1980s. He combines deep backend engineering skills with practical consultancy, currently advising clients through contexo Gesellschaft für Systemintegration mbH. An active open-source contributor, he improved the Frege compiler—bringing Haskell-style functional programming to the JVM—by enhancing its parser, Java interop, native type handling, and git-derived versioning automation. His background spans hands-on system programming and support roles, reflecting strong operational instincts and an ability to modernize legacy toolchains. Colleagues value him for methodical refactoring work and for turning complex compiler and build problems into robust, maintainable solutions.
13 years of coding experience
German, English, Russian, French
Stackoverflow
36,177reputation
4.4mreached
1,110answers
39questions
perl
top-5%
recursion
top-5%
haskell
top-1%
java
top-1%
functional-programming
top-1%
oop
top-1%
Github Skills (24)
oop10
git10
compiler-development10
java10
version-control10
functional-programming10
haskell10
jvm9
programming-language9
pattern-matching9
regex9
perl9
build-system9
whereclause9
recursion9
Programming languages (8)
Github contributions (5)
Frege/frege
Oct 2012 - Oct 2019
Frege is a Haskell for the JVM. It brings purely functional programing to the Java platform.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 releases, 2213 commits, 91 PRs in 7 years 1 month
Contributions summary:Ingo primarily worked on the Frege compiler, contributing to versioning and build processes. They implemented a Perl script to generate version numbers derived from git history. The user also refactored the compiler's source code, including implementing improvements to the parser and working on Java-related components. The user's contributions included adding Java support and improvements for native types and their arguments.
fregehaskelljavajvmpure-function
Frege/eclipse-plugin
Oct 2012 - Sep 2019
The eclipse plugin for frege, codename fregIDE
Contributions:152 commits, 4 PRs, 36 pushes in 7 years
eclipse-pluginfrege
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