fulltime Projectondersteuner vacatures

Assistant Project Manager

Date: 4 Dec 2025

Location: DELFT, ZH, NL, 2612 PA

Company: Allseas Group

About Allseas

Division Description

Department Description

At Allseas, we deliver innovative solutions for complex offshore projects. Our Departments related to project management handle a wide range of projects: from major investment projects and vessel upgrades to operational and commercial offshore activities.

We are looking for Assistant Project Managers to take ownership of critical work packages. Based on your experience and interests, we will determine which team is the best fit for you.

Unit Scope

Discipline Description

Job Description

As an Assistant Project Manager, you play a key role in the preparation and execution of complex offshore projects. You ensure your work are delivered on time, within budget, and according to the highest quality and HSE standards. Depending on the department and type of project, your focus may vary: from managing operational and client-facing activities in commercial projects or driving technical innovation and vessel upgrades in non-commercial projects. Your responsibilities may include:

For non-commercial projects:

Department Capital Projects as part of Innovations Division

• Engineering & Documentation: Coordinate technical documentation, drawings, and specifications; ensure quality and compliance.
• Planning & Coordination: Develop detailed schedules from concept design until commissioning and testing and ensure proper progress reporting onsite.
• Supplier Management: Work closely with internal teams and subcontractors for technical delivery and material supply.
• Budget & Reporting: Monitor costs and man-hours; prepare accurate forecasts and reports.
• HSE & Quality: Ensure compliance with safety standards and quality requirements throughout all project phases.
• Team Coordination: Lead multidisciplinary teams and ensure smooth collaboration between engineering, asset management, operations, and HSE.
• Process Optimization: Implement improvements in project processes and contribute to strategic innovations.

Typical projects: vessel conversions and modifications, crane upgrades, inhouse developments such as the topsides lift system, construction of new-build vessels, etc.

For commercial projects:

Department Project Management as part of Projects Divisio n

• Planning & Coordination: Develop detailed schedules for offshore installations and operational activities.
• Stakeholder Management: Maintain close contact with clients, suppliers, and authorities to safeguard commercial agreements and permits.
• Contract Management: Handle contract changes, concessions, and commercial aspects; negotiate variations and claims.
• Budget & Reporting: Prepare cost estimates, progress reports, and forecasts for internal and external stakeholders.
• Team Coordination:Lead multidisciplinary teams and ensure smooth collaboration between engineering, operations, and HSE.
• Risk Management: Identify commercial and operational risks and develop mitigation plans.

Typical projects: Include the installation and decommissioning of platforms in the wind and oil and gas sectors, as well as the installation of pipelines.

Education & Experience

You are organized, communicative, and have a hands-on mentality. You can switch between different projects and thrive in a technical environment.

Requirements:

• Bachelor or Master in Civil, Mechanical, Offshore Engineering, Economics, or Commerce.
• 3-5 years of relevant experience in project management or coordination, preferably in a technical context.
• Affinity with complex projects and multidisciplinary teams.
• Strong communication and interpersonal skills.
• Basic understanding of contract management and interest in commercial aspects.
• Fluent in English (spoken and written).
• Willingness to travel and occasionally work offshore.

Certifications

Additional Information

Joining Allseas gives you the chance to work in a dynamic, fast-paced, entrepreneurial environment, with creative thinking, collaboration and down-to-earth culture at its core.

You can expect:

• Competitive industry benchmarked salary and excellent pension;
• Performance based salary raises and bonuses;
• 30 holidays days per year, flexible working hours;
• Company-sponsored fitness scheme;
• On-the-job training, study budgets and coaching;
• A close-knit community, BBQ's, parties, (sportive) events and Friday afternoon drinks.

Allseas has earned the "World-class Workplace" label. This means that as an employer we score above Effectory's global benchmark for being a good employer. The label is based solely on feedback from our employees. Wondering what our people say about working at Allseas? Read their stories.

Interested?

If you feel that you can contribute to our business by diving into this exciting opportunity, we are looking forward to receiving your CV and motivational letter! Please apply via the 'Apply' button.