Personal Details | |
| Name | David Landwehr |
| Address | Bredholtvej 3 DK 2650 Hvidovre Denmark |
| Phone Mobile | +45 24 27 55 18 |
| E-mail address | david@landwehr.dk |
| Birth date | 20th January 1977 |
| Marial status | Married with one child |
| Education | Master of Science in Engineering |
Personal Profile | |
| Qualities | Analytical and Objective Innovative and Entrepreneurial Pragmatic and Diplomatic Energetic and Productive Calm and Balanced |
Professional Summary | |
| 2008 (Oct) - PicoForms |
Chief Product Architect
XForms, Java, Android, .NET, C#, J2ME, C++ |
| 2008 (Jan) - 2008 (Oct) PhaseOne |
Software Developer
C++, C#, Objective-C, Cocao, .NET |
| 2006 (Jul) - 2007 (Dec) PicoForms |
Senior Product Architect
XForms, Java, .NET, C#, J2ME, C++ |
| 2005 (Sep) - 2006 (Jul) SolidApp |
Independent
XForms, Java, .NET, C#, J# |
| 2003 (Nov) - 2005 (Sep) Novell Denmark A/S |
Principal Software Engineer
XForms, C++, Java and XML |
| 2001 (Mar) - 2003 (Nov) SilverStream Software |
Principal Software Engineer
XForms, Java and XML |
| 2000 (Feb) - 2001 (Mar) Wapportal |
Senior Developer
Java, Device Transcoding |
Work Experience | |
| 2008 (Oct) PicoForms |
Chief Product Architect
PicoForms is a software provider of mobile solutions based on its standard based widget platform.
PicoForms platform is based on a server side and a distributed J2ME client. At PicoForms
I was responsible for the development of the platform and the development of widgets.
I renewed the PicoForms rendering capabilities with the following features:
I also ported the client platform to Android. Below is a video demonstrating the UI running on a Nokia N78: |
| 2008 (Jan) - 2008 (Oct) PhaseOne |
Software Developer
PhaseOne is a manufacture of a digital camera that is used by professionals.
PhaseOne has a RAW processing software package called Capture One which processes RAW images
from PhaseOne's camera but also from cameras produced by Nikon, Canon and others. I worked
in the Capture One core algorithm group as a software developer with the responsibility of
the overall processing architecture and communication to two UI groups (Windows and Mac OS X).
Capture One had three groups working on the software. One group made the Mac OS X version
which was written in Objective-C and used Cocoa. The second group made the Windows version
which was written in C# and was running on the .NET platform. The last group, the group
I worked in, implemented a C++ cross platform library which did all the image processing.
In that group I worked as liaison between the two UI groups and defined the API between the core
library and the UIs. This meant I wrote code in C#, Objective-C and C++.
I also performance tuned the C++ library and debugged everything from the UI to the processing
algorithms. I also worked on memory allocation algorithms since the core processing required
huge amount of memory and the build-in allocator/deallocator created fragmentation.
|
| 2006 (Jul) - 2007 (Dec) PicoForms |
Senior Product Architect
I started in PicoForms which develops Java browsers
for J2ME targeted for mobile phones and for Java
Personal Basic Profile targeted for embedded systems.
I developed a browser for J2ME which supported DOM,
CSS, XPath, XML Schema datatypes and XForms. The
browser was targeted for devices supporting CLDC 1.0
and MIDP 2.0. I also developed a XForms C++ implementation for
Internet Explorer using COM and Binary Behaviors.
Additionally I was out for a 3 months period where I worked as a consultant
for a danish pension company on there internal administration system. The technologies
used here was Java with Websphere as J2EE container using Batis and Spring.
|
| 2005 (Sep) - 2006 (Jul) SolidApp |
Independant
I started my own company, SolidApp with the mission to
build and service software that creates, deploys and
runs standard-base declarative applications for Java
and .NET
I wrote an XForms processor in Java targeted for small
devices. The emphasis was to create an XForms based
runtime as a building block for creating declarative
applications. A layer above this creates the foundation
for a declarative application platform where the user
interface/application is created based upon the incoming
data and the user interaction. This layer consisted of an
XSLT processor which will incrementally evaluate the
stylesheet rules and update the host document, e.g. the
document which is displayed to the user. The actual
rendering of the host document is left as a building
block outside of the platform, e.g. I have a rendering for
J2ME MIDP devices which is created as an example
rendering. Also I am in the process of creating a .NET
rendering which utilizes the Internet Explorer Web
Browser Control. The processor is open sourced at
sourceforge (http://solidforms.sf.net).
|
| 2003(Nov) - 2005 (Sep) Novell Denmark A/S |
Principal Software Engineer
Novell acquired SilverStream Software where I was
working until 2003(Nov).
I worked as Novell's representative in the W3C XForms
working group during the entire period of my
employment. I participated both as an editor and as a
regular member in the working group.
I developed two JavaTM XForms processors and one C++ implementation for Internet Explorer. Both JavaTM processor were made as a foundation for other rendering capabilities, mainly a server-side J2EETM XForms processor for HTML browsers. I wrote an XPath implementation for the first JavaTM processor. The second JavaTM included a partial but substantial CSS implementation. The C++ implementation for Internet Explorer was written as a COM/ActiveX component based on Binary Element Behaviors. The implementation was created as an attributed ATL component and was written using C++ templates. A part of this component was ported and donated to mozilla.org for the XForms extension for Firefox. The C++ implementation for Internet Explorer also has a toolbar. |
| 2001 (Mar) - 2003 (Nov) SilverStream Software |
Principal Software Engineer
SilverStream Software acquired Wapportal where I was
working until 2001 (Mar).
I developed software for the transcoding of content to
small devices using a "slice and dice" approach. The
software was written in JavaTM for the SilverStream
Application Server (a J2EETM application server) and
the transcoder was integrated into SilverStream's portal
solution. I also commenced work with XForms in this
period.
|
| 2000 (Feb) -2001 (Mar) Wapportal |
Senior Developer
I created a WAP-page system much like the JSP
architecture. The system was used to present
information to mobile devices capable of WAP. The
software was written in Java and specific for the
SilverStream application server. I also started work on
transcoding of content to small devices.
|
| Prior Corebit United Consultants Ericsson |
Student Jobs
I worked as a supporter for the SilverStream application
server at Corebit and United Consultants. I also
developed a customer relations system for that particular
application server.
I developed two Microsoft Access databases (one collecting quality measures and representing them as graphs and one for tracking where people where located in the building) for Ericsson. I also created several internal web applications for them. |
Hobby development | |
| iPhone |
Chess Game
I made a small chess game for iPhone based on GNU Chess. I ported GNU chess to
run on iPhone and I implemented a UI in Objective-C. I tried to enhance the playing
experience by bubbling up the board and pices when the user was doing a move. It
required a lot of low pixel calculations and it gave a fun feeling to the game
however I surely wasn't the right solution. I also drew the chess board.
I didn't try to get the game on Apple's AppStore as it contained GPL code.
Below is a video showing the game in the latest development version:
|
Education | |
| 1995-2001 Danish Technical University |
Master of Science in Engineering
General engineering field: Electrical Engineer
Specific engineering field: Computer Systems. Master thesisFuzzy Data Analysis (Pap Smear Analysis) Graded 11 (magna com laude) for independent and excellent performance.The thesis was about analysing images of pap smears which is samples taken from the uterus. The thesis analyzed different digital image processing techniques for extracting feature-sets. It then analyzed the featuresets for classification to reduce false-positives. |
| 1997 (Sep) - 1998 (Jan) Military Service Beredskabskorpset Hillerød |
Military Service
Fireman with Smoke Diver certificate
Office Clerk |
| 1992-1995 Vestre Borgerdyd Gymnasium |
Upper Secondary Examination (Mathematics)
|
Professional Interests | |
| I have a strong interest in declarative approaches and markups for developing
applications. XForms is just such an approach and therefore I am interested in continuing
my work in this area. XForms in particular is interesting since it is a standardized markup
language from W3C and is widely accepted by companies like IBM. I am interested in
projects which develops XForms processors and in applications which utilizes XForms. I also have an interest in embedded devices and developing application for those. My interest is based on the challenge of developing usable applications which can only use a limited amount of features. I am interested in compiler technology and generation optimizations which can be used to deploy declarative application to small devices. I am interested in working in teams and in leading the technical development in projects. | |
Personal Interests | |
| Computer graphics, animations, creating small games, making websites, taking photos are all things that I find amusing and would like to spend all my time doing. Most of these things are done behind the computer so occationally I like to go for a run, a walk or just travel the world. | |
Skills | |
| Language | Danish spoken and written English spoken and written |
| Computer Languages (in order of experience) | JavaTM C++ and C J# Obj-C JavaScript or ECMAScript ActionScript C# Python PHP Visual Basic Delphi (and Pascal) |
| Computer Architectures | J2EETM Eclipse Netbeans Microsoft Foundation Classes (MFC) Cocoa Blender (3D Graphics) Incskape (2D SVG Graphics) Gimp (Bitmap) Flash (2D Animation) Microsoft ActiveX (COM) .NET Framework Microsoft Windows Linux |
| Computer Specifications | Co-editor W3C XForms (http://www.w3.org/tr/xforms) Editor on exforms.org for extending XForms (http://exforms.org) |
| Certifications | Sun Certified Programmer for Java2 Platform |