Java | Python | Software Architect & Fullstack Developer / Entwickler

During my time at Mars, I led the development and refactoring of an advanced software solution developed in PHP Symfony that automatically generated Power Point presentations from GfK and Nielsen market data reports in Excel format. The software had a user-friendly UI front-end that allowed the secure management of specific formulas through comprehensive authentication and a complex rights management system. This enabled the automated creation of more than 20 presentations for well-known grocery chains such as Aldi, Netto, Edeka, Rewe, Globus and Bela, with each presentation consisting of more than 70 slides with multiple chart types such as bar charts, line charts and pie charts. By using modern technologies and PowerPoint automation, I was able to develop a robust and scalable solution that met Mars' high standards. In addition, the integration of these technologies enabled seamless collaboration and continuous improvement of the software, and my work led to a significant increase in the efficiency of presentation creation, enabling Mars to make informed, data-driven decisions faster and more reliably.

During my time as a freelancer at Bartels Langness, I was able to contribute significantly to the development and optimization of e-commerce solutions. I contributed significantly to the development and improvement of the B2B eCommerce Shopware shop of "Bela". This included the implementation of product search, display and order functions, as well as the integration of payment gateways, shopping cart functions and custom business logic.

I also developed an iOS, Android and multiplatform app in React Native that seamlessly integrates with the B2B Shopware store. This app allows users to access the "Bela" assortment, place orders and track order status on mobile devices and tablets. A special challenge was to implement offline functionality in the app. This allowed users to access important information and place orders without an Internet connection. Implementing offline functionality required careful planning and programming to ensure a smooth user experience. During my time at Bartels Langness, I was actively involved in identifying opportunities to improve the B2B shop and app. This included implementing additional features, security updates, and stability improvements for both the infrastructure and code base.

The solution I developed significantly increased Bartels Langness' efficiency in the B2B space and ensured a smooth user experience across multiple platforms. I was proud to be part of this successful project and would be happy to contribute my knowledge and experience to future projects.

The tourism service platform was optimised and enhanced to enable real-time queries and improved user experience. Additional features, security updates and stability improvements were implemented on both the infrastructure and code base. A single page application was developed to address common issues such as page breaks, load times and form constraints.
Technologies: PHP, Zend, Laminas, PHPUnit, GitLab, MySQL, Redis, Apache, Maven, Tomcat, Microservices, JAVA, Node, React.js, TypeScript, Webpack, Docker, AWS, Terraform, JIRA, Confluence