Lukas Barth
Software Engineer
Munich, Bavaria, Germany
Summary
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RockstarLukas Barth is a software engineer in Munich with 14 years of experience specializing in high-performance algorithms and modern C++ engineering. He holds a Ph.D. in optimization for energy informatics and now applies that algorithmic rigor to the routing core of a public transport engine, focusing on graph and scheduling challenges. Comfortable across C++, Python and (E)Lisp, he enjoys squeezing out performance through careful data-structure and algorithm design and making complex systems feel seamless in production. An active open-source contributor, his work spans notable projects from Signal Android to Apache Thrift and Taskwarrior, touching both UI refinements and compiler-level C++ code generation. He combines academic depth with pragmatic engineering—often addressing subtle race conditions and ODR-style issues that others miss—making him a reliable problem-solver for performance-critical systems.
14 years of coding experience
Stackoverflow
2,824reputation
74kreached
23answers
39questions
Github Skills (38)
javascript10
c-language10
command-line-interface10
autocomplete10
user-interface10
java10
taskwarrior10
javas10
code-generation10
front-end-development10
computer-engineering10
android10
command-line10
thrift10
cprogramming-language10
Programming languages (24)
Github contributions (5)
apache/thrift
Jan 2023 - Mar 2024
Apache Thrift
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 2 PRs, 17 comments in 1 year 1 month
Contributions summary:Lukas primarily focused on improving the C++ code generation capabilities of Apache Thrift. Their work involved refactoring the generation of default constructors, initializer lists, and equality operators to enhance code maintainability and prevent potential issues like ODR violations. They also made changes to struct definitions, demonstrating a good understanding of code generation and compiler-related aspects within the Thrift framework. These contributions improved code stability and the robustness of the Thrift compiler.
actionscriptapache-thriftnetwork-clientdartapache
signalapp/Signal-Android
Mar 2014 - Oct 2014
A private messenger for Android.
Role in this project:Mobile Developer (Android)
Mobile Developer (Android)Contributions:8 commits, 1 PR, 7 comments in 7 months
Contributions summary:Lukas primarily contributed to the Signal Android application by implementing new features and fixing bugs. They added functionality to refresh the push directory within the contact selection activity and ensured the contact list reloaded after directory updates. Furthermore, the user updated the application to leverage `ACTION_OPEN_DOCUMENT` for file attachments on Android KitKat and newer versions. The user also addressed a race condition and optimized UI elements, as well as added K-9 style avatars to group conversations.
signalandroidkotlinmessengerjava
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