Headshot of Conrad Lempert, a young man smiling at the camera, standing in front of a blue sky.

Conrad Lempert

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I am a software development consultant at Netlight.
Before, I was a human-computer-interaction researcher at Hasso-Plattner-Institute.

Consulting projects

Consulting Project number 1. An image of a shopping cart meaning ecommerce.

1. Building a B2B e-commerce platform

Full-stack TypeScript/PHP development

since September 2025

Research projects

Project number 9. AirForce. A very big animated yellow truss structure made from inflatable tubes.

9. AirForce: Personal Fabrication of Large-Scale, Load-Bearing Animatronics Structures from a Single Tube

Lukas Rambold, Robert Kovacs, Min Deng, Antonius Naumann, Konrad Gerlach, Horatio Hamkins, Helena Lendowski, Chiao Fang, Shohei Katakura, Conrad Lempert, Muhammad Abdullah, Patrick Baudisch

In Proceedings of CHI '26 (full paper)

Paper (to appear)  (to appear)

Project number 8. Mallet-Based Assembly. A person hammering on a piece of laser cut wood to assemble a chair.

8. Mallet-Based Assembly: Enabling Load-Bearing Laser-Cut Models

Shohei Katakura, Chiao Fang, Mehdi Gouasmi, Lino Hellige, Yoan Tchorenev, David Bizer, Conrad Lempert, Martin Taraz, Muhammad Abdullah, and Patrick Baudisch

In Proceedings of UIST '25 (full paper)

Paper  Video

Project number 7. PopCore. Several small white boxes made from PopCore on a table. They have a clean, professional look.

7. PopCore: Personal Fabrication of 3D Foamcore Models for Professional High-Quality Applications in Design and Architecture

Muhammad Abdullah, Laurenz Seidel, Ben Wernicke, Mehdi Gouasmi, Anton Hackl, Thomas Kern, Conrad Lempert, Clara Lempert, David Bizer, Wieland Storch, Chiao Fang, and Patrick Baudisch

In Proceedings of SCF '24 (full paper)

Paper  Video

Project number 6. AirTied. A tall yellow inflated truss tower and a person holding the round, metallic AirTied device that fabricated the tower.

6. AirTied: Automatic Personal Fabrication of Truss Structures

Lukas Rambold, Robert Kovacs, Conrad Lempert, Muhammad Abdullah, Helena Lendowski, Lukas Fritzsche, Martin Taraz, and Patrick Baudisch

In Proceedings of UIST '23 (full paper)

Paper  Video

Project number 5. Structure-Preserving Editing. A wooden acoustic guitar made with laser cutting. Its body is a volume and its neck consists of plates.

5. Structure-Preserving Editing of Plates and Volumes for Laser Cutting

Thijs Roumen, Ingo Apel, Thomas Kern, Martin Taraz, Ritesh Sharma, Ole Schlueter, Jeffrey Johnson, Dominik Meier, Conrad Lempert, and Patrick Baudisch

In Proceedings of SCF '22 (full paper)

Paper  Video

Project number 4. HingeCore. Assembling a white small foam chair by folding a laser cut sheet made with HingeCore.

4. HingeCore: Laser-Cut Foamcore for Fast Assembly

Muhammad Abdullah, Romeo Sommerfeld, Bjarne Sievers, Leonard Geier, Jonas Noack, Marcus Ding, Christoph Thieme, Laurenz Seidel, Lukas Fritzsche, Erik Langenhan, Oliver Adameck, Moritz Dzingel, Thomas Kern, Martin Taraz, Conrad Lempert, Shohei Katakura, Hany Mohsen Elhassany, Thijs Roumen, and Patrick Baudisch

In Proceedings of UIST '22 (full paper)

Paper  Video

Project number 3. FoolProofJoint. Assembling a small wooden chair by combining laser cut pieces which have been optimized by FoolProofJoint.

3. FoolProofJoint: Reducing Assembly Errors of Laser Cut 3D Models by Means of Custom Joint Patterns

Keunwoo Park, Conrad Lempert, Muhammad Abdullah, Shohei Katakura, Jotaro Shigeyama, Thijs Roumen, and Patrick Baudisch

In Proceedings of CHI '22 (full paper)

Paper  Video

Project number 2. AutoAssembler. A software interface showing a wooden VR headset being assembled automatically by AutoAssembler.

2. AutoAssembler: Automatic Reconstruction of Laser-Cut 3D Models

Thijs Roumen, Conrad Lempert, Ingo Apel, Erik Brendel, Markus Brand, Laurenz Seidel, Lukas Rambold, and Patrick Baudisch

In Proceedings of UIST '21 (full paper)

Paper  Video

Project number 1. Assembler cubed. A software interface showing how assembler cubed converts between a 2D plan and a 3D object.

1. Assembler³: 3D Reconstruction of Laser-Cut Models

Thijs Roumen, Yannis Kommana, Ingo Apel, Conrad Lempert, Markus Brand, Erik Brendel, Laurenz Seidel, Lukas Rambold, Carl Goedecken, Pascal Crenzin, Ben Hurdelhey, Muhammad Abdullah, and Patrick Baudisch

In Proceedings of CHI '21 (full paper)

Paper  Video

Education

Master in IT-Systems Engineering (Hasso-Plattner-Institute)

Thesis: Web-based analysis of multi-temporal point clouds
Master: 2018 - 2021
Bachelor: 2015 - 2018