Software Developer, Hardware Developer, System Administrator, Network Administrator

Design, research and development, modification and implementation of system
and system near software.
Furthermore, catering for applications with text or graphical user interface.

Programming languages:
- C
- Assembler

Scripting and Markup languages:
- Shell Scripting, hauptsächlich bash und ksh
- Python
- Lua
- SQL, PL/pgSQL, PostgreSQL
- SQL, PL/SQL, Oracle 8.x/9
- LaTeX
- HTML, XML
- Markdown
- Tcl/Tk

Experiences in development tools and environments:
- gcc, gdb, gdb remote make und binutils
- gcc cross Compilers
- sdcc und Tool Chain
- autoconf, autotools
- valgrind, oprofile, linux-perf
- Vim/Gvim, vim-syntastic and vim-ALE plug-ins, vi
- cscope
- git, svn und monotone
- DoxyGen, groff, pandoc und andere
- cGit, gitweb und gitolite
- Gerrit, Project specific
- openocd und flashrom with TIAO adapter
- Lauterbach JTAG Debugger, Project specific
- Xilinx iMPACT & Vivado, Project specific
- dpcmd & DediProg, Project specific
- Lattice Diamont, Project specific
- Altera Quartus, Project specific
- B&R Automation Studio, Project specific


Consulting, design and implementation of software and hardware of single
systems including data centre infrastructure.

Furthermore, administration, support, maintenance and operation thereof,
including development operation.

Software technologies:
- Operating systems
  - Linux mainly Debian but also RHEL, Ubuntu, SuSe, Slackware
  - HPUX 10.20/11.11/11.23
  - Solaris 8(5.8)/9(5.9)/10(5.10)
  - Cisco IOS
  - ONL
  - OpenWrt

- Bootloaders
  - lilo
  - silo
  - grub
  - syslinux, isolinux
  - u-boot
  - coreboot
  - UEFI
  - BIOS

Applications and services:
  - Standard Services: ssh, rsync, NFS, tftp, ftp, vftp, telnet, rsh und andere
  - OpenLDAP
  - bind DNS
  - ISC DHCP
  - mdadm software RAID
  - LVM
  - LUKS encryption
  - Cyrus IMAP
  - Apache http
  - PostgreSQL
  - MySQL
  - Oracle, Project specific
  - Amanda backup system
  - Linux ipfwadm, ipchains, iptables
  - Linux Shorewall
  - OpenSwan, IPSec
  - openvpn
  - Qemu, LXC und libvirt
  - VirtualBox
  - VmWare
  - SLURM Workload Manager
  - IBM Tivoli Maestro, Project specific
  - BMC Ctrl-M, Project specific
  - UC4, Project specific
  - JIRA + Rest API, Project specific
  - Jenkins, Project specific
  - Confluence, Project specific


Hardware technologies:
- Platforms
  - x86, amd64
  - HP PA-RISC
  - SUN Sparc
  - ppc    
  - mips
  - arm32, arm64

- Infrastructure
  - Rack mounted systems: Inclusive video or serial terminal consoles, KVM’s,
    JBOD and RAID storage arrays, optical storages, tape storages, terminal servers
    and PDU’s.
  - Network: Thin Ethernet, twisted pair Ethernet, single-mode and multi-mode
    (OM1-OM4) optical fibre, inclusive SFP, QSFP technology.
    Utilisation of LAG, MLAG technology and iSCSI SAN technology.
  - Bus systems: I2C, CAN.
  - Dedicated: Installation and setup of client specific telecommunication
    equipment.

Design, research and development and implementation of electronic circuits and
micro controller circuits and also PCB development in THM and SMT technology.

Applications for electronic engineering:
- gEDA, lepton-eda
- pcb
- qucs, qucs-s für Simulationen
- ngspice für Simulation
- simulIDE, gpsim

Applications for mechanical engineering:
- qcad
- VariCAD
- freecad