In this space I share details about selected web development projects I did, in collaboration with others as well as on my own. Note this is a work in progress.
As this page lists only a selection of my projects, feel free to skim my other public repositories at GitHub. 
A travel recommendation website with Home, About and Contact Page. Allows to search for destinations based on keywords. Coded in JavaScript.
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Advent calendar web application. Displaying each day a little challenge related to IT-security. Allows to schedule an email newsletter. Coded in coperation with a senior developer, with Django.
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Implementing a free template with a Django backend, including navigation, template inheritance, template tags, and functional email contact forms.
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Node web application listing products retrieved from a database by category. Including pagination and shopping cart functionality.
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A simple application allowing to create, update and delete posts stored in a database. Implemented using the MERN stack.
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A chatbot giving restaurant recommendations based on user preferences. Implemented in Python with a self-managed team of developers.
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A research project trying to assess the security level of container runtimes. Involving a static comparison and experimental testing of past exploits.
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A program able store a collection of books, allowing CRUD operations, as well as import from and export to a xml file, by marshalling and unmarshalling. Implemented in Java.
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A website that gives travel destination recommendations based on user-supplied keywords. The database contains countries, beaches and temples. It is stored as a json file, fetched with JavaScript's fetch API function, and searched depending on user-supplied keywords. Results are added to the DOM and dynamically displayed back to the user.
Final project for the JavaScript essentials course of the IBM Fullstack Javascript Developer specialization.
A Django web application inspired by advent of code. Displays each day a little challenge related to a lecture on IT-security. For a correct solution, the user gets displayed the picture of the day and rewarded with a star. Includes a dashboard to manage Story Elements, Tasks, Correct Solutions, Users, Star Counts. Also allows to schedule newsletters.
This web application was written together with a Senior Developer from the Chair of Security and Privacy in Information Systems. It was also deployed and is currently available internally from the University's network.
Dentist Website for showcasing services, doctors, blogging, and making appointments. Based on a freely available template. Implementing the backend meant to adjust the template to use Django's template tags (such as static) and template inheritance, setup routing and corresponding views in Django. To make the forms for contact appointment booking functional, the backend uses send_mail, as well as a mailserver.
I completed this project while following a coding tutorial by John Elder.
A node.js web application that displays products by category. Products are stored in a PostgreSQL database. features pagination to enhance the user experience. Shopping cart functionality, including a small summary icon, is also included.
Simple blogging app allowing to create, display and update blogs stored in a database.
The dialogue management system is able to parse natural language user input given via chat. According to user preferences, the system finds suitable restaurants in the database and suggests them to the user. This project was developed in a self-organized team of four student developers, in winter semester 2022/2023. The main parts are the natural language parser, the dialogue management module, and the output module.
The module I contributed to the project is the dialogue management module. It implements a decision tree structure by filling pre-configured slots with information obtained from the input parser module - such as intent, area, pricerange for the restaurant.
Containerization technology has become increasingly popular as corporations adopt cloud architecture solutions. Containers streamline the development, testing, and deployment of applications by bundling them with necessary components, including the operating system environment. However, security concerns remain the primary obstacle to widespread adoption. In multi-tenant environments, such as those offered by Container as a Service (CaaS) providers, the risk of container breakouts is a critical concern. This thesis focuses on identifying the technical features essential for selecting a container runtime software to mitigate the threat of container breakouts. These criteria are developed by gaining a sufficient background understanding of the Linux kernel technologies underlying containerization. We evaluate four popular runtimes - LXC, Apptainer, runC, and gVisor - by examining their static features, architecture, rootless operation capabilities, and publicly known vulnerabilities. Our findings suggest that runC is the least suitable option due to its weak configurations, as well as a history of flaws and lax patching policy. Apptainer stands out for its use in high-performance computing (HPC) due to its immutability guarantees and design-centric integration of rootless containers. LXC presents a reliable choice due to its maturity, while gVisor is worth considering for those seeking the latest innovations. However, to effectively mitigate the threat of container breakouts, it is essential to investigate why they occur empirically – possibly due to leaked credentials or phishing rather than flaws in runtime software.
A literature database program for command-line based interaction, student project in summer semester 2023. The database is stored in the form of a XML file and is loaded into the program for modification and can be exported back to XML. It was required to never let exceptions reach the user, but keep a consistent and reasonable flow of interaction anyway. There also had to be two menus, a main menu and a submenu. The menus had to offer the following options:
The sub-tasks we had to implement were these:
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In this blog post, we'll explore how to set up a modern web application using React for the front end, Vite for a fast development experience, and Node.js for your backend. This powerful combination allows you to build dynamic, responsive applications with ease.
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In Express, a popular web framework for Node.js, setting up routes allows you to build dynamic, user-friendly applications effortlessly. In this tutorial, we’ll cover the essential concepts of routing in Express, including how to create routes, define route parameters, and handle different HTTP methods.
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