(You can also look at my Xing profile. Unfortunately they don't show much any more unless you are logged in as a Xing member. Still better than LinkedIn.)

Jobs

• since 2018: Network administrator at the Charité, Berlin's large university hospital. Less development (still some), more administrative things, more (internal) customer contact, and of course more network-centered. That said, this is mainly a Python and Ubuntu shop.
   
• 2012 – 2018: Services developer and herder (without a real job title, apparently) at the Freie Universität Berlin, central computing facilities (ZEDAT). Actually, this is very much the same job as at Strato, only in the quite different environment of a university. Perl, Python, C, Unix (Debian).
   
• 2007 – 2011: Shared Hosting Platform Developer at STRATO AG, at the time second largest web hosting outfit in Europe. Actually services-running-keeper and systems integrator, with as much actual software development as necessary, some systems administration. Trainer for apprentice programmers. C, Perl, Java, Unix (Solaris, RHEL).
   
• 2004 – 2006: Software developer at Netzwert AG (acquired by Nokia Siemens Networks 2008), a small company building and operating TCP/IP-based infrastructure services for mobile network operators. Java, Perl, C, Unix (Solaris).
   
• 1999 – 2004: Back at Condat ("Condat AG" in between) as a networking consultant. Beginning May 2001 software developer for mobile communications with GSM/GPRS, mainly TCP/IP-related stuff in the mobile phone software. C, embedded. Summer 2002 that department was acquired by Texas Instruments, so we were TI then.
   
• 1998 – 1999: Software developer and system administrator at Tellique GmbH (now defunct). Tellique was developing communication solutions focused on reliable Multicast. C and Perl on Unix and Win32.
   
• 1996 – 1998: Consultant at Condat GmbH, with focus on networking and telecommunications (mostly network planning in largish LAN/WAN environments).
   
• 1987 – 1996: A few jobs as a student programmer at the TU Berlin, while I studied electrical engineering at first and computer science later. Wrote a lot of software tools and the audio part of a video conferencing system, and worked on a software configuration management toolkit (ShapeTools); Unix, VMS, and some MS-DOS with C, Tcl/Tk, Bourne Shell, DCL, Emacs Lisp, and a bit of assembler.

Education

• Degree in computer science (Diplom-Informatiker) from the TU Berlin, Germany.
• Intermediate degree (Vordiplom) in electrical engineering at TU Berlin, Germany.
• Abitur at Kreisgymnasium Bargteheide. I also visited the Altes Gymnasium in Flensburg.

Main Professional Interests

• Computer networks and data communications; Internet protocols and services, including IPv6.
• Unix programming; in particular network programming
• Unix network and systems administration
• Data processing history
• Software configuration management
• Programming languages; functional programming, e.g. with Haskell and Lisp, but also exploring new promising developments like Go

See some of the programs I wrote.

Student Papers

(in German)

• Parsierung von Make- und Shapefiles (Studienarbeit)
• High-Level-Programmiersprachen in den sechziger Jahren: Lisp und Algol 60 (Referat)
• SkelML -- ein skeleton-basierter parallelisierender Compiler für ML (Referat)
• Simula -- von der Simulation zur ersten objektorientierten Programmiersprache (Referat mit Stephan Rudlof)
• Mischen und Multiplexen von Audioströmen in computergestützten Konferenzsystemen (Diplomarbeit)

Jürgen Nickelsen <ni@w21.org>