Jan Krüger

Hi, I'm Jan. Here's a (somewhat) condensed summary of who I am, what I know, what I do, and how to reach me.

On the web
Personal blog, music I've made
I'm also on GitHub.
I'm on Facebook and Twitter, too, but I don't actually do anything there... I'm just wasting space on their servers.
In the real world
Ravelsberger Str. 11
52146 Würselen
jk@jk.gs (plus a few others, notably jast@srcd.de)
jast on Libera
Profile (w/ buzzwords)
Education and experience:
  • German and English
  • analytical approach to problems based in critical rationalism
  • effective learning and building reliable intuition
  • professionally trained singer
  • a lot of time at university
  • communication and teaching
  • 2016 – present: Senior software developer / admin at Userlike Live Chat
  • 2012 – 2016: Software developer, Tier III support representative, auxiliary system administrator, trainer for customer IT staff at Modell Aachen GmbH
  • 2010 – 2012: Student, artificial intelligence at Maastricht University (NL)
  • 2006 – 2010: Student, knowledge engineering / computer science at Maastricht University (NL), graduated: BSc
  • 2001 – 2006: Student, computer science at RWTH Aachen (DE)
  • 1983: born
Personal interests: making music, singing, writing, cooking, meditation, design, occasionally bending computers to my will
Bonus section: computers
This is what I know things about:
  • computer science, data mining, machine learning, networks and protocols, software design, cryptography, compiler and language design, concurrency
  • programming (mainly C, JavaScript, POSIX shell, Python, POSIX shell, Rust; occasionally (in no meaningful order): 80x86/6510 Assembly, C++ with Qt, C# with .NET, Erlang, Haskell, Java, OCaml, Perl, PHP, Raku, Ruby...)
  • web (functional design, HTML/CSS, JavaScript, Perl, PHP, Python, ...)
  • databases (PostgreSQL, SQLite, LMDB, Redis, ...), keenly interested in database implementation details
  • digging through codebases for seemingly intractable problems
Noteworthy open source experience:
  • Contributions to git and user support/community management in #git IRC channel (Libera/Freenode) since 2008; member of repo.or.cz admin/development team
  • Helped develop testMaker, a tool for creating web-based self-assessments
  • Contributor to various open source projects, including Foswiki