A lexander Rinke is a German technology entrepreneur and one of the three co-founders of Celonis, a Munich-based software company that has become a global leader in the field of process mining. Along with his co-founders Bastian Nominacher and Martin Klenk, Rinke started the company in 2011 while they were students at the Technical University of Munich. They developed a powerful software that helps businesses analyze and visualize their internal processes to identify inefficiencies and bottlenecks.

The trio's innovative technology, which they call the Execution Management System, quickly found a market among major global corporations seeking to optimize their operations. As co-CEO and Chief Strategy Officer, Rinke has been a key driver of the company's vision and its rapid international expansion, particularly in the United States. Celonis has attracted massive funding from top-tier venture capital firms, achieving a multi-billion dollar valuation and becoming one of Germany's most successful and valuable tech unicorns.