Interim CTO / Agile Coach mit mehr als 20 Jahren Projekt-Erfahrung

References provided at request.

 

PRIOTAS GMBH (08/2014 - 11/2014)

- Freelace Engineer / Software Achitect

- Development of a multi-tier REST backend using Silex, Symfony Components and PostgreSQL

- Technical documentation and developer training

PIN DIGITAL GMBH (05/2014 - 10/2014)

- Freelance Technical Lead

- Optimization and refactoring of a PHP‐based application

- Silex, Symfony Components, PDFlib

 

MAGIC INTERNET MUSIK GMBH / AMPYA.COM (06/2013 - 11/2013)

- Freelace Engineer / Software Achitect

- Responsible for backend refactoring and software quality improvements

- Sympfony 2, Apache Solr 4, MySQL, Varnish, eZ CMS, jQuery, PHP Unit

 

DAIMLER FINANCIAL SERVICES AG (04/2012 - 04/2013)

- Freelance Consultant / Web Software Architect

- Refactoring of a legacy PHP application (Zend Framework, Symfony, Oracle, jQuery)

- Training, Documentation, Scrum, Quality Assurance

 

T-SYSTEMS MMS GMBH (2011 - 03/2012) 

- Freelance Frontend Consultant (JavaScript, Mobile Devices)

- Frontend Development for Deutsche Messe AG (CeBIT, Hannover Messe and others)

 

6 WUNDERKINDER GMBH (2011) 

- Freelance Consultant for JavaScriptMVC 

- On-site Training (MVC and client/server architecture, Web Security, Quality Assurance)

- Customization of the framework to the requirements of the project 

 

WETTER.COM AG (2011) 

- Subcontractor of 100 DAYS Software Projects GmbH / Tomorrow Focus Technologies GmbH

- Planning of application architecture; technical specifications; estimation of effort 

- Development of JavaScript widgets to replace the existing Flash solution (jQuery) 

 

NOVADEX GMBH (2011) 

- Freelance Software Engineer/Architect (subcontractor of 100 DAYS Software Projects GmbH) 

- Design and initial implementation of Symfony 2 / JavaScriptMVC based multi-tier architecture 

- Responsible for automated quality assurance (JavaScript) and code reviews 

 

ECOUNION AG (2010) 

- Freelance Software Engineer/Architect (subcontractor of 100 DAYS Software Projects GmbH) 

- Zend Framework / JavaScriptMVC / MySQL based CRM tool

- Responsible for building the complete CRM application incl. customer front-end and external interfaces in a very short time frame

 

TOYOTA INFORMATIONS-SYSTEME GMBH (2010 - 2012) 

- Freelance Consultant and Developer 

- Implementation, documentation and testing of SOAP interface to the central warranty system 

- Set-up of quality assurance tools (code metrics, unit tests); Training 

- Refactoring and documentation of the existing PHP code-base to improve reliability and speed 

- JavaScript Consulting (jQuery, CanJS, AngularJS, Amber.js, MVC/MVVM, Dependency Management)

 

EARTH.ORG (2008 - 2009) 

- Freelance Consultant 

- Responsible for security, scalability, speed and reliability of Earth.org 

- Preparation of technical specifications for software developers (multi-tier software architecture) 

 

DEUTSCHE TELEKOM AG (2007 - 2010) 

- Lead an international team of 20 developers in 4 locations

- Development of a user-generated content platform for ~10m customers

- Reported to project management and VP Professional Services (subcontractor of Zend)

 

CMS HASCHE SIGLE (2006 - 2007) 

- Freelance Consultant and Developer

- CMS Hasche Sigle is one of the largest law firms in Germany with 12 locations world-wide 

- Design of the human resources database and automated data import / export (MS SQL Server) 

- Coordination with external service providers (Pixelpark AG) 

- Development of the internal human resources portal (Zend Framework, Ext JS) 

 

ZEND TECHNOLOGIES GMBH (2006 - 2009) 

- Freelance Software Engineer/Architect for clients of ZEND – The PHP Company

 

[Firmenname auf Anfrage] (2001 - 2006) 

- Founder / CEO

- Content management systems, open-source solutions, Web design and Web hosting 

- Maintainer of the open-source software “Adaptive Website Framework” (PHP 5, MySQL) 

- Clients included the University of Tübingen, the Department of Trade and Industry (Baden-Württemberg), Connors Communications (NYC, USA), CAPup! GmbH (Düsseldorf) and Objectpark Software (Bonn) 

- Administration of up to 5 Linux servers (MTA, DNS, monitoring, MySQL/Apache, LDAP, firewalls, development of configuration frontend and management scripts) 

 

SCIENCE+COMPUTING AG (2000 - 2001) 

- Freelance Software Developer 

- Development of an accounting system for a new ASP product (PostgreSQL, Perl) 

- Redesign and improvement of the public Web site (PHP, MySQL) 

- Development of an intranet portal (Embedded Perl, SQL, MS Access) 

 

INTEREDU.COM (1998 - 2001) 

- CTO responsible for a team of 4 developers 

- InterEdu was a European organisation that provided people from all over the world with the information and advice necessary for deciding where to study in Europe 

- Web portal development using Linux, Apache, MySQL and PHP 3 

- Clients included consulting firms like McKinsey & Company 

 

HOELLE UND HUETTNER AG (1997 - 1998) 

- Freelance Software Developer 

- Rewrite of the internal project management software (Delphi, HTML, Windows) 

- Custom software development in the area of robotics and biotechnology 

Physik, FU Berlin (2003 - 2005)

Professional Scrum Master™ (PSM I)