About us

Peter Langner

Founder & CEO

Peter Langner studied Computer Science at the University of Hamburg.

He became self-employed by founding ADventas Consulting GmbH in 2006. Together with his team he advises and supports export management companies in implementing SAP S/4HANA.

Besides that Peter is a SAP fluencer and head of the DSAG work group Global Trade Management.

When he is not working, Peter loves to play his guitar, read science fiction novels and to spend time with his cats Emma and Bernoulli on the couch.

Hakan Kaya

Functional Consultant SAP GTM/MM

Hakan Kaya has a Bachelor degree in Business Administration and longstanding service expertise, especially in the wholesale and FMCG trading sector.

After continuous encounters with SAP (since R3!) he now supports the team since 2023 as a Functional Consultant for SAP GTM/ MM in S/4HANA.

Like Timo, Hakan is a family man and appreciates the variety between his work at the office and further developing his craftmanship due to the current renovation of his home. Besides that he is a passionate motorbike rider and also loves to do some fixing on it. Any conversation regarding this topic will surely become more than just smalltalk.

Dr. Lawrence Cabac

Technical Consultant SAP GTM/MM/SD

Dr. Lawrence Cabac studied Computer Science at the University of Hamburg and also did his PhD there.

He supports our team as a Technical Consultant for SAP GTM, MM and SD.

Clemens Schnellert

Sales Representative

Clemens Schnellert brings more than 20 years of sales experience from his time at SAP, where he served as an Account Manager and Sales Expert.

Holding a degree in Industrial Engineering and Management from TU Berlin as well as an MBA, he supports ADventas as an external consultant, leveraging his extensive expertise in partner management and sales. He actively contributes to the development of strategic customer and partner relationships.

Daria Maksymenko

Functional Consultant

Daria Maksymenko is studying Business Informatics at the University of Hamburg. She supports the ADventas team as a Functional Consultant and is particularly interested in economic relationships and digitalization.

Daria is always open to new experiences. She loves traveling unknown places and meeting new people. In her free time she enjoys doing hip-hop and photography.

Judith Friedrich

Marketing & Communications

Judith Friedrich studied Business Administration at the Freie Universität Berlin. With her expertise in Marketing, Event and Business Development, gathered at different national as well as international workplaces, she supports our team in Marketing and Communications.

Judith loves to travel, especially to Canada. Also there is no better way for her to relax than cutting some fruit trees.

Esma Görkem

Marketing & Communications

Esma Görkem holds a Bachelor’s degree in Fashion Management from Macromedia University in Hamburg and is currently completing her Master’s in Media and Communication Management with a focus on Brand Management.

With her background in marketing and her passion for design, she supports ADventas in Marketing and Communications.

In her free time, Esma enjoys creating visual content, exploring new places, and unwinding with music or a walk outdoors. She loves using design and aesthetics to tell stories and bring ideas to life.

Leon Karlau

Technical Consultant

Leon Karlau studies business informatics at the University of Hamburg. He supports the ADventas team as a technical consultant.

Leon enjoys spending time on the beach in Greece, reading crime novels.