About us

– Our mission
– Strategic direction
– Highlights

Customer-oriented management consulting

OneStone Consulting, Management consulting, Market experts

The strategic direction

Our goal is to improve the competitiveness and success of our clients in their specific markets.

OneStone Consulting started in 1997 as a consultancy company for the business to business industries with the idea to assist clients in their strategies and positioning with excellent market analysis.

This is a successful concept: It was first introduced to our German clients. Now we can use experience from more than 600 projects with more than 70 international companies. 

Our Mission

We want to be a competent, reliable and recognized partner for our customers.

We supply tailor-made solutions for individual customer needs. Our work is most successful when we work closely with clients who are dissatisfied with the status quo and who share our passion for results. 

Strict confidentiality is important to us for close cooperation and open dialog.

Creativity is our strength

Foundation: 1997 by Dr.-Ing. Joachim Harder

Annual turnover: 0.1 – 0.5 million Euro


Employees: 1-10 permanent staff,  plus freelancers.      Non-core business functions outsourced, within the European Union (EU).


Locations: Hamburg, Barcelona, Varna

Client satisfaction

“Choosing an excellent consultant is a difficult task. You need to be convinced by the consultant‘s quality and expertise. On the other hand, it is important that the ‘chemistry’ fits. We are pleased to contribute our part.”


Joe Harder
Managing Director of OneStone Consulting,

Senior Consultant

Dr Joe Harder, The founder of OneStone Consulting