About me

Hi, my name is Sebastian. I'm a Vim and Git addicted software developer from Germany :)

I made software for technical, administrative and safety management of yachts over the last decade. Now I work in parking space management.

On this site you find mostly information about projects I created in my spare time and that I want to share. Sometimes I also turn on my webcam to watch birds or my cat.


Things I do @home.

  • efind - Extendable wrapper for GNU find with intuitive expression syntax.
    C, GNU Make, GNU Bison, GNU Flex, syntax analysis, context sensitive analysis, Unix process management, Doxygen, Valgrind, Cppcheck, Python
  • datatypes - Collection of various data types in C.
    C, GNU Make, abstract data types, memory management, OpenMP, Doxygen, Valgrind
  • Weather Station - Arduino Nano based weather station
    C++, Arduino
  • Weather Service - A website for collecting & sharing weather station measurements.
    C#, .NET Core, MVC, REST, Bootstrap, Vue.js, JavaScript, jQuery, LINQ to DB, ORM
  • mpcw.client - A mpd client written in Java.
    Java, mpd, TCP/IP
  • libea - Template based C++ library for evolutionary algorithms.
    C++14, STL, SCons, Python, unit testing (CppUnit), evolutionary computation, caching, LaTex, Doxygen, Valgrind
  • meat-a - REST service for adding social network features to an object database.
    Python, WSGI, MVC, REST, JSON, Cheetah, reflection, annotations, inter-process communication, caching, PostgreSQL, SMTP, unit testing, GNU Make, m4
  • clojure-tlv - Pure functional type-length-value decoder and encoder.
    Clojure, TLV
  • blocks-monger - MongoDB storage backend for blocks.
    Clojure, content-addressable storage, MongoDB
  • severin - A Clojure library for implementing resource pooling.
    Clojure, software transactional memory
  • severin-monger - MongoDB connection pooling for Clojure.
    Clojure, MongoDB
  • Bookkeeping - A simple bookkeeping application for personal use.
    Java, Swing, SQLite, depency injection, GOF, reflection, annotations, cross platform, desktop
  • my-website - This website.
    Clojure, compojure, ring-clojure, hiccup, markdown, caching, jQuery, JavaScript, HTML5, WAR

Projects (dead)

Unmaintained code, but still available.

  • Fonzie - A tiny virtual machine (~1000 loc).
    C, inline assembler, byte code processing, virtual CPU
  • fasm - An assembler for the Fonzie virtual machine.
    C#, assembler, byte code compiler, syntax analysis, context sensitive analysis
  • meatjs - A mobile application letting users tag, comment, vote & recommend images.
    Apache Cordova, Android, HTML5, REST, JSON, jQuery Mobile, JavaScript, local storage, asynchronous communication, caching, cross-platform
  • Timesheet - Progressive timesheet web app (prototype).
    .NET Core, C#, MVC, Entity Framework, MSSQL, REST, JSON, Vue.js, jQuery, JavaScript, Bootstrap, HTML5
  • Jekyll - A GTK+ based multi-platform desktop client for Twitter.
    C, GNU Make, GNU gettext, GTK+, GObject, REST, OpenSSL, SQLite, JSON, XML, OAuth, inter-process communication, caching, cross platform, desktop, Doxygen, Valgrind
  • mail2twitter - Python based email <-> Twitter bridge to share a Twitter account.
    Python, POP3, SMTP, SQLite


If you want to contact me please use mail or Matrix.

GPG is much appreciated. Here you can download my GnuPG key.

The German law requires that this website has an imprint.

Who is Dixie Flatline?

One of my favorite characters from Neuromancer.

A famous computer hacker named McCoy Pauley, who earned his nickname by surviving three "flat-lines" while trying to crack an AI. [...] Before his death, Sense/Net saved the contents of his mind onto a ROM.

Wikipedia: Neuromancer#Characters