What we do

Challenge

With more than 100,000 motorists driving through the existing Coen Tunnel in Amsterdam every day, the tunnel had become a traffic jam blackspot. The congestion was only set to get worse if nothing was done. Therefore, the Dutch government decided to create more capacity to alleviate the problem.

The Second Coen Tunnel is an immersed tunnel under the North Sea Canal, beside the existing Coen Tunnel. The tunnel consists of three permanent lanes towards Zaanstad and two other lanes, which can be used in either direction depending on the intensity of the traffic.

Solution

DEME is part of the Coentunnel Company, the consortium awarded the Second Coen Tunnel project.

Used technology

Hammers / vibration blocks

Cranes / piling rigs

Pontoons

Our scope included:

Financing the entire project
Design and build of the new tunnel, based on a functional Set of Requirements
Renovation of the existing Coen tunnel
Design and construction of roads leading to the existing system, with bridges and other infrastructure
Construction of ponds, banks and culverts and arranging the permits
Maintaining the above-mentioned scope for 30 years

Related jobs

All jobs

Operational buyer

The Operational Buyer is responsible for the execution, monitoring and aftercare of the purchasing process and managing the purchasing administration, within the guidelines and procedures of the department, in order to support the department and the internal customer(s) for the timely processing of requests and purchase orders. Focuses on account quality, lead time, on time in Full delivery, customer satisfaction, supplier management and optimization of the Total Cost of Ownership.

DEME General

Supply Chain / Procurement

Belgium

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Administrative Support

As an administrative support you will take care of all-round administrative tasks related to our QHSE department.

Dredging

Admin & Support

Belgium

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Supply Chain Officer

As the operational right-hand of the Logistics Coordinator, you ensure effective communication and continuity. You maintain close contact with the team and handle administrative tasks related to supply chain and logistics.

The role is a combination of warehouse management, material park operations, and a small portion of transport-related activities, providing a clear overview of the diverse responsibilities involved.

You work closely with the team, monitor processes, ensure safety policies are upheld, and provide support wherever needed. You are responsible for task follow-up, planning, and ensuring that operations are carried out efficiently and safely. Together with the team, you ensure accurate registration of goods receipt, stock management, and the qualitative, complete, and safe shipment of deliveries.

You take the necessary actions with the right priorities in mind. Flexibility, communication, and a strong focus on planning, quality, and safety are key in this role.

DEME General

Supply Chain / Procurement

Netherlands

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Warehouse Officer (temporary position)

Als laatste schakel in het logistieke proces zorg je als Warehouse Officer voor de correcte verzending van scheepsonderdelen en verbruiksgoederen naar onze vloot over heel de wereld.

Je plant samen met de transportafdeling de bevoorrading van de schepen via air, road en sea-transporten. Hierdoor sta je in nauw contact met de technische dienst van de schepen, onze interne transportafdeling en de arbeiders die de goederen klaarmaken voor verzending.

Flexibiliteit, communicatie en planning zijn key in deze functie.

DEME General

Supply Chain / Procurement

Belgium

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Finance Manager Indonesia

Do you want to turn challenges into opportunities and explore new horizons ? Interested in becoming our new Finance Manager for our Indonesian branch & projects?

DEME is a global solutions provider in a challenging and rapidly changing world and a world leader in the highly specialized fields of dredging and land reclamation, solutions for the offshore energy market, environmental and infra marine works.

Our expertise and vast experience has been deployed over the centuries for Dredging, Environmental and Marine Engineering business solutions such as: port construction and improving maritime access worldwide. We have been creating land for 140 years and will continue to do so in the future.

Therefore we are looking for motivated candidates to reinforce our Finance department at our office in Jakarta.

DEME General

Finance

Worldwide

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Immersion Specialist

As an immersion specialist, you will be part of the team responsible for floating and positioning concrete tunnel elements or caissons, equipping them in the port, transporting them from temporary storage locations to the offshore site, and installing them at sea.
In the preparatory phase, you will be involved in the development of operation manuals, work plans, and coordination between teams to ensure smooth execution. In the operational phase, you will be part of the team that performs the immersion activities, ensuring the correct positioning of the elements or caissons on the seabed.

Infra

Engineering

Worldwide

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Insurance Administrator

DEME is a global solutions provider in a challenging and rapidly changing world and a world leader in the highly specialized fields of dredging and land reclamation, solutions for the offshore energy market, environmental and infra marine works.

DEME’s Legal Department, situated at DEME’s headquarters in Antwerp (Belgium) and consisting of an extensive and complimentary team of in-house legal and insurance counsels, is looking for a detail-oriented and organized Insurance Administrator to join its team.

In this role, you will be responsible for managing insurance policies, ensuring compliance with industry regulations, and providing excellent support to clients and internal teams. The ideal candidate will have strong administrative skills, a customer-focused attitude, and a solid understanding of insurance processes and terminology.

DEME General

Admin & Support

Belgium

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Apprenticeship Office Management

Apprenticeship Office Management - Start 01/08/2025

Dredging

Internship & Student

Germany

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