The JONGEN team
is available for all your questions and consultancy about our services.
Julia Dettmer - General management
Since 2012 active in the organisation as a member of the Dettmer family. After the completion of her Master in Barcelona, with main focus on International Business, Miss Dettmer continuous her career in the fields of business consulting, purchasing and fund management.
Miss Dettmer is since 2012 responsible for the fields marketing, PR & communication as well as the property management for Dettmer Group.
In 2016 she took on the leadership of the subsidiary Jongen GmbH together with Niels Mohrenz.
Telephone: 040-369 17 56 - 19
Niels Mohrenz - General management
The trained insurance purchaser is since 2000 active in the port business (port economy). For fourteen years he was the CEO of a Hamburg waste disposal company for ship waste, which he developed to become the market leader in 2007.
Following he held a responsible position in the firm REMONDIS, which is working in the oil recycling business. After which he worked together with the Dutch family business JONGEN B.V., to establish Jongen GmbH in Hamburg. Jongen GmbH is since 2016 separated from its’ Dutch mother and is now member of the Dettmer Group KG which has its’ headquarters in Bremen.
“I am excited to be back in a medium-sized company with short decision-making processes and I look forward to implement the expansion strategies in Hamburg’s market. The cooperation with Dettmer Group will support us hereby while we serve the same customer base, therefore we can offer treatment and disposal of ships in the industrial companies from one source.”
Telephone: 040-369 17 56 - 17
Michael Giannandrea – Operational Manager
Michael knows the disposal business and the port of Hamburg like the back of his hand, since he already has nearly ten years of experience with two other ship disposal businesses from Hamburg. With his know-how in disposition and verification, as well as his practical experience as an inspector for disposal and cleaning, he fits the motivated team of Jongen GmbH perfectly.
Telephone: 040-369 17 56 - 16
Benjamin Roeder – Operational Manager
Benjamin Roeder was born in 1984 in Hamburg and has spent all his professional live working within the port industry.
After completing his training as a clerk he gained profound knowledge as an inspector for Marpol disposal.
In the course of his career he has been assigned for being the contact person for the authorities regarding oil spill control.
In the past years Mr. Roeder has crossed industry lines into the communal department leading the winter service, bevor he became part of Jongen´s team as operational manager and offering his deep knowledge of the disposal market to our customers.
Telephone: 040-369 17 56 - 18
Roy Grigutsch - Operational Manager
Roy completed his education as a plumber and fitter.
Already in 2010 he gained experiences of the daily activities of local waste disposal companies. He mainly was in charge of the disposition as well as for the waste verification management.
In 2016 Roy started successfully at Jongen and organizes on his own authority the marpol disposal onshore. Furthermore, he is the first contact for you when it comes to disposition, oil spill fighting and waste record. .
Telephone: 040 369 17 56 - 15