Student Mathematics as Working Student Information Systems - Write & Optimize SQL Queries for Validation (f/m/d)

E.ON Energy Markets GmbH E.ON Energy Markets GmbH is a subsidiary of the E.ON Group headquartered in Essen, Germany. Its main purpose is to bundle access to trading markets for E.ON's regional units, the associated risks and to perform services and additional value-creating activities. This includes the provision of portfolio strategies, risk management concepts and business activities in the field of data and information processing. The company is active in various European countries. E.ON is …