John Johannes Jähnke

Startup Strategist & Marketing Consultant

multitaskforce@gmail.com | https://vutuv.de/john_johannes_j

Prinzenstraße 42, 10969 Berlin, Germany

Professional Experience

Startup Strategist & Online Marketing Consultant, McGrinsey.com

1/2000 - Present

Tags

Magic | Startup Strategy | Visionaire

Links

McGrinsey.com: http://mcgrinsey.com

Profiles

LinkedIn: https://www.linkedin.com/in/johnjohnjohn