Oss Heindl
Student
Germany
Summary
🤩
RockstarOss Heindl is a computer science student in Germany with six years of practical software development experience and a strong footprint in open-source projects. He has contributed meaningful back-end and full-stack code to widely used tools like Xournal++ (extending its Lua API for richer plugin capabilities) and LuaSnip (enhancing snippet management and test coverage for Neovim users). Comfortable in C++, Lua, and tooling around developer workflows, he focuses on robust API design, error handling, and automation that improve plugin ecosystems. Oss has a knack for turning user-facing needs into extensible developer APIs—evident in features like content-aware page sizing and programmatic access to strokes, texts, and images. Though still a student, he consistently delivers production-minded improvements and integration tests that raise project stability. Based in Germany, he blends curiosity-driven open-source contributions with practical engineering discipline.
6 years of coding experience
Github Skills (16)
neovim10
plugin-development10
lua10
snippet10
snips10
c-language10
api10
cprogramming-language10
apidoc10
sni10
evernote9
testing9
notepad9
pdf9
test-driven-design8
Programming languages (16)
Github contributions (5)
xournalpp/xournalpp
Sep 2022 - Nov 2022
Xournal++ is a handwriting notetaking software with PDF annotation support. Written in C++ with GTK3, supporting Linux (e.g. Ubuntu, Debian, Arch, SUSE), macOS and Windows 10. Supports pen input from devices such as Wacom Tablets.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:86 reviews, 3 commits, 20 PRs in 1 month
Contributions summary:Oss significantly contributed to the Lua API for Xournal++, focusing on extending plugin functionality. They added new functions like `getStrokes`, `getTexts`, and `addImagesFromFilepath` to enable plugins to access and manipulate drawing elements. Furthermore, the user refactored error handling in the Lua API, standardizing error reporting. Finally, they implemented a plugin that adapts the page size to its content.
notespdf-viewerc-plus-plussusewindows-10
L3MON4D3/LuaSnip
Aug 2022 - Oct 2022
Snippet Engine for Neovim written in Lua.
Role in this project:Back-end Developer
Back-end DeveloperContributions:22 reviews, 13 commits, 5 PRs in 2 months
Contributions summary:Oss primarily contributed to the development and testing of the LuaSnip snippet engine, focusing on features related to snippet management and expansion. They implemented functionality for automatically creating tables within the snippet collection, along with adding support for snippet types. The user also added integration tests to verify new features and refactored existing code. The user's work enhanced the functionality and stability of the snippet engine.
luasnippet-enginevimsnippetsnippets
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.