Jersonal – for a happier life

Learn more about Jersonal’s core purpose, mission statements, and guiding values.

Meet Jersonal’s Founders

Learn more about the academic backgrounds and former McKinsey consultants driving Jersonal’s scientific calibration loop.

Dr. Oliver Bossert

Dr. Oliver Bossert

Co-Founder & Technology

Oliver studied biology and holds a PhD in neuroscience and bioinformatics. He has always been passionate about applying advanced analytics and digital tools to complex biological problem solving. Oliver worked for nearly 20 years at McKinsey & Company, leaving as a Partner where he led the Enterprise Architecture division. At Jersonal, he leads software engineering, technology platform architectures, and local-first data systems.

Jan-Oliver Kliemann

Dr. Jan-Oliver Kliemann

Co-Founder & Modeling

Jan-Oliver studied physics at TU Braunschweig and earned his PhD in mechanical engineering in Hamburg. Driven by broad intellectual curiosity, he also studied political science, philosophy, and history for several semesters. Jan-Oliver served as Managing Director for a family office in Munich, following his tenure at McKinsey & Company. At Jersonal, he leads statistical modeling of the Life Friction Model (LFM) and strategic business development.