Barbara Wittenberg is the CTO of 1KOMMA5°, an international company that develops and sells carbon-neutral energy systems for private buildings. She began her career at E.ON, where she held various managing positions in the decentralized energy sector, after studying industrial engineering at RWTH Aachen. Later, she moved to Oracle and became the Sales Director of Autonomous Cloud Business Germany, driving digitalization and cloudification forward. Prior to joining 1KOMMA5°, Barbara was responsible for the digital native and start-up business at Google, where she focused on the technical and digital scaling of start-ups.