Work Experience¶
Here you can find some examples of work I have done.
04.2015 - 12.2015 Questback GmbH¶
Senior Software Developer
- field of work
development of PHP and MySQL back end product
project specific customizations
integration of RDF GraphStore and SPARQL queries into existing software infrastructure
technologie evaluation
- technology
PHP, ZEND, mercurial, MySQL, EasyRDF, BlazeGraph, RDF, SPARQL, shell, JavaScript
06.2013 - 01.2015 Rockethome GmbH¶
Senior Software Developer
- field of work
development of PHP and MySQL back end for SmartHome platform
implementation of web front end for SmartHome platform
development of automatic device detection and handling
development of REST interfaces
customer and partner communication (technical)
project specific customization
SmartHome device analysis
SmartHome network communication analysis
- technology
PHP, ZEND, git, SOAP, REST, MySQL, JSON, HTML, JavaScript, Wireshark
System Administrator
- field of work
analysis of existing infrastructure
analysis of cloud (IaaS) services
system clean up
encrypted backup and recovery automation
implementation of automated system managemant based on ansible
development and implementation new renundant System Architecture
deployment automation for production and testing
documentation of system architecture, usage and emergency plans
- technology
Linux, Ansible, Python, ssh, shell, PHP, KVM, libvirt, nginx, apache, DNS, reverse proxy, load balancing, iptables, MySQL, MariaDB cluster, memcache
03.2009 - 08.2012 Electrobrothers GmbH & Co. KG¶
now part of repucom
Software Developer/System Administrator
- field of work
development of a PHP front and back end
development of a distributed renderer based web scraper
web site analysis for generic and site specific web scrapers
integration of different software systems into SOA
development of a specific deployment system
MySQL DB architecture, administration and optimisation
system administration
- technology
Shell, Python, PHP, JavaScript, JQuery, HTML/CSS, MySQL/Percona, Subversion, SOAP, REST, JSON-RPC, Multiprocessing, distributed computing, SOA, micro services, RSS, Atom feed
10.2008 - 09.2010 University of Cologne¶
http://www.chemie.uni-koeln.de/cip.html
Assistent System Administrator
- field of work
integration of Linux into Microsoft Windows Server Active Directory domain
manage Windows/Linux dual boot user systems
develop CD/DVD based automated update mechanism
documentation and web site maintenance
user support
- technology
OpenSuse Linux, Samba, pam (Pluggable Authentication Module), Wireshark, grub, shell, TYPO3
11.2007 - 09.2008 neavis GmbH¶
Frontend Software Developer
- field of work
implementation of web designs (IE6 - IE8, Firefox, Safarie, Chrome, Opera)
development of JavaScript web application
- technology
HTML, CSS, JavaScript, Prototype, Ruby on Rails