Projects & Contributions
SAP Addon
03/2020 – now 40
Firefox/Chrome Extension for SAP internal webpages
Installation GitHub
QR PWA
04/2020 – now 2
Progressive Web App to create and scan QR codes
QR PWA GitHub
Local Image Viewer
04/2020 – now 1
Firefox Extension to navigate through local images with arrow keys
GitHub
RCJ Rescue Line League Chair (Berlin)
since 2019
Organizing and managing Rescue Line at RoboCup Junior Berlin
GitHub RoboCup Junior
RCJ Rescue Clock
02/2020 – now
Progressive Web App to stop time during RoboCup Junior Rescue
RCJ Rescue Clock GitHub
Browser Extension Helper
04/2020 – now
Opinionated Node.js package to help building and deploying browser extensions
GitHub
tg-status-bot
09/2020 – now
Personal Telegram Bot to regularly execute certain actions (e.g. web scraping) and send notifications
GitHub
RCJ Rescue Line League Chair / Orga (Germany)
since 2022
Co-organizing RCJ Rescue Line at RoboCup German Open Kassel/Nürnberg/Köln + Euro Hanover 2024
RoboCup Germany
Metro Memory
05/2025 14 contributed
List as many stations of your city's metro as you can remember
metro-memory.com GitHub
Bingo
12/2024
Simple PWA to generate random numbers for a Bingo game (offline support)
Bingo Web App GitHub
Common Voice
06/2018 – 07/2023 contributed
Recording and validating voice clips for Mozilla's Common Voice project
Common Voice
ion-tools
08/2021 – 03/2023 143 contributed
Tools and utilities to make working with the ION network and using ION DIDs easy peasy lemon squeezy
GitHub
OpenStreetMap
05/2018 – 08/2022 contributed
Improving and enhancing the data of OpenStreetMap
OpenStreetMap StreetComplete
Google Capture The Flag 2022
07/2022 52nd
Successful participation with the Platypwnies (HPI)
Platypwnies ctftime.org Google CTF
Photo by Lokilech, CC BY-SA 2.5
saarCTF 2022
05/2022 10th
Successful participation with the Platypwnies (HPI)
Platypwnies ctftime.org saarCTF
RCJ Digital Scoring Sheet
08/2019 – 03/2022
RoboCup Junior Rescue Line: Digital Scoring Sheet (used at RCJ Berlin)
RCJ DSS GitHub
RCJ Notification Bot
09/2020 – 01/2022
Bot notifying teams about schedule and events (WhatsApp, Signal, Telegram)
GitHub
RCJ Server
01/2020 – 01/2022 contributed
Back end for RCJ DSS to store runs and enable live results
GitHub
RCJ Evaluation & Results
01/2020 – 12/2021
Calculate standings and display live results for RCJ Berlin
Evaluation Live Results
HTB University CTF 2021 - Quals
11/2021 6th
Successful participation with the Platypwnies (HPI)
Platypwnies ctftime.org Writeups
Logjam Attack: Exploiting Export Ciphers in TLS
04/2021 – 08/2021 1
University project implementing Logjam and using HPI Future SOC Lab for DL computation
GitHub Demo Video
did-jwt-vc
08/2021 207 contributed
Create and verify W3C Verifiable Credentials and Presentations in JWT format
GitHub
Speaker Notes
05/2021
Web App to show presentation notes with a time forecast
Web App GitHub
SoK: Multi-Device Secure Instant Messaging
11/2020 – 04/2021 8
Paper on multi-device messaging as result of a seminar at HPI
IACR ePrint PDF
Hanab Live
03/2021 202 contributed
A web server that allows people to play Hanab, a cooperative card game of logic and reasoning.
Hanab Live GitHub
German Laws
05/2020 – 01/2021 1
Web App to fetch and display German laws
Web App GitHub
MoneyWallet
12/2020 627 contributed
An Android application that lets you track your expenses
F-Droid GitHub
ethr-did-resolver
09/2020 – 12/2020 230 contributed
DID resolver for Ethereum Addresses
GitHub
Veramo
03/2020 – 11/2020 523 contributed
A JavaScript Framework for Verifiable Data (fka DID Agent Framework)
GitHub veramo.io
cors-proxy
10/2020 8
CORS proxy fetching remote URLs and adding CORS headers
deno.land/x nest.land GitHub
kek
10/2020 3
Deno command line utility with simple scripts
deno.land/x nest.land GitHub
Fancy Flashcard
05/2020 – 09/2020 20
Lightweight free/libre and open-source PWA to help you learning on all your devices
Fancy Flashcard GitHub
Dualis Telegram Bot
09/2018 – 09/2020
Fine-tuned a Telegram Bot to check for new grades and notify me + fellow students
Random Mix
08/2020 3
Deno module to create random lists based on some discrete probability distribution
deno.land/x GitHub
Countries Module
08/2020 7 contributed
Deno module which provides information about countries
deno.land/x GitHub
Simple Icons
08/2020 24.5k contributed
SVG icons for popular brands
GitHub
ExoPlan
11/2019 – 07/2020 6
Project at DHBW Mannheim to help directors of studies plan and schedule lectures
GitHub
Signal
07/2020 28.4k contributed
A private messenger for Android, iOS, Windows, Mac, and Linux.
Signal GitHub
lock.pyw
01/2019 – 06/2020
Python script to lock your PC once something happens
GitHub
ethr-did
04/2020 – 06/2020 293 contributed
Library for Decentralized Identifiers on Ethereum Blockchain
GitHub
DHBW LaTeX Template
10/2018 – 05/2020 105 contributed
A LaTeX template for Project and Bachelor Thesis, DHBW Mannheim
GitHub
did-jwt
04/2020 369 contributed
Create and verify DID verifiable JWT's in Javascript
GitHub
Decision Matrix
12/2019 – 03/2020
Web App to create decision matrices
Decision Matrix GitHub
RCJ Rescue Line Volunteer/Referee
2018 – 2020
Referee at RoboCup German Open Magdeburg, qualifier Mannheim, Euro Hanover 2019
RoboCup Germany
pwtry.pyw
02/2019 – 01/2020
Simple Python script to memorize a password by repetition
GitHub
Advent of Code
2016, 2017, 2018 & 2019
Annual participation in this advent calendar of small programming puzzles
Advent of Code My Solutions
RCJ Current Delay
02/2019 – 03/2019
Small Python tool to display current delay at RCJ Berlin
GitHub
Steganography
03/2019
Web App to hide text inside an image
Web App GitHub
2048
04/2018 – 01/2019 1
Remake of 2048 (as a Python game)
GitHub
Graduation Yearbook
02/2017 – 06/2017
Creating and using a LaTeX template for the school graduation yearbook
RCJ Rescue Line
03/2013 – 05/2017
Participating in RoboCup Junior Rescue Line several times
YouTube
Substitution Schedule CLI
01/2016 – 04/2017
Parsing substitution schedule at school for relevant information
GitHub (Telegram Bot)