David Wichmann shares his journey of transitioning from academia to various roles until finding fulfillment as a system engineer and data scientist for hydrogen fuel cells in southern Germany. After facing repetitive tasks in previous positions, he embraced the technical challenges offered by working with high-dimensional time series data and software development for hydrogen fuel cell applications in transport decarbonization. While enjoying his current role, David also started his own data science company to provide specialized data analysis services for engineering cases. Through this experience, he showcases a positive outlook towards entrepreneurship and personal growth, emphasizing the importance of finding meaningful work and contributing to societal goals like decarbonization. Despite past setbacks, David remains optimistic about the future, open to the possibilities that lie ahead in his career.