2012 - Today

[Firmenname auf Anfrage], CEO/CTO

I am responsible for the development, operations and sales of a marketing games platform.

Technologies:

• HTML5/Haml
• CSS/Sass
• JavaScript/CoffeeScript
• Flash/ActionScript
• Starling
• CitrusEngine
• crafty.js
• Ruby On Rails 
• Node.js 
• Socket.io
• MongoDB
• jasmine.js
• FlexUnit
• Linux
• iOS- and Android-clients via Adobe's ADL compiler

 

2004 - 2011

PAY.ON AG Munich, CEO/CTO

I was responsible for the development, operations and sales of a payment platform for payment service provider. I lead a team of 50+ employees worldwide.

I created the architecture of the product and developed large parts of the codebase (150 Kloc) up until mid of 2007.

I introduced and managed the development process and the testing framework.

Technology:

• Java
• Hibernate
• Spring
• PostgreSQL
• Linux
• Ruby
• Ant
• CruiseControl
• Struts
• GICC
• MT940
• Flex
• SVN
• AspectJ

 

2003

O2 Munich, Freelance Software-Developer

Development of a “mediation” module for creating billing statements for roaming wifi-connections.

I conducted the requirements-analysis, I developed and documented the final product.

Technology:

• Perl
• Bash-Scripts
• S-Lang

 

2002

Wirecard Munich / Surefire Payments Montral, Freelance Consultant

I was responsible for doing a technical due diligence between the two companies and working out a strategy for merging the technology stacks.

Technology

• Java
• Oracle
• J2EE
• Apache FOP
• XML
• PDF

 

2002

HVB Munich, Freelance Software-Developer

I was responsible for the creation of a PDF writer for a trading platform. I had to extract data from MS-Documents and write them into PDF files. The files where the stored on the trading platform.

Technology:

• Java
• MS-OLE
• XML
• Apache FOP

 

2002

Kirch Media AG, Freelance Software-Developer

Development of a component for converting all balance-sheets (usually in Excel format) of all 400+ daughter companies into on unified balance sheet format in preparation for the then planed IPO.

Technology:

• Python
• MS-OLE
• MS-Jet-Engine
• Oracle
• SQL

 

1999 - 2001

NSE AG (now BrainForce AG), Freelance Technical Lead

Finas Enterprise – Architecture and implementation of a banking credit calculator and the associated UX. Coaching of the team members on object oriented design and object oriented analysis and on Java.

Technology:

• Java
• Java Swing / Java Foundation Classes
• Oracle
• homegrown Object Request Broker (ORB)

 

1998 - 1999

NordLB Hannover, Technical lead and coach

Porting of a mainframe program into a client-server architecture. Definition oft he architecture and development of a HP37x protocol-converter. Coaching of the team members on object oriented design and object oriented analysis, UML, patterns, client server architecture and on Java.

Technology

• Java
• hierarchical DB

 

1997 - 1998

IZB-SOFT (Finanz Informatik) Munich, Freelance Software Developer

S-Kredit – Development of generic UX modules for the management of customer information at banks (Sparkassen).

Technology:

• Java
• Gemstome OODB
• CORBA

 

1996 - 1997

Oberfinanzdirektion Hannover, Freelance Software Developer & Coach

Training & Coaching of the employees on object oriented design, object oriented analysis, C++ and Java. Development of an project management tool for internal projects.

Technology:

• C++
• Java

 

1991 – 1995

Freelance Trainer

Trainer for end user trainings for Windows/Word/Excel/Powerpoint and coaching for software developers (C++, Visual Basic, FoxPro, database design)