POSTED: 30th January 2026
STARTING DATE: As soon as possible
FULL TIME, ROTTERDAM, THE NETHERLANDS

The mission of The Ocean Cleanup is to develop advanced technologies to rid the world’s oceans of plastic. One part of the solution is to design, develop, and deploy cleanup systems to stop plastic from reaching our oceans by intercepting it in rivers.
We are seeking a Junior Project Manager to support our project management team in the implementation of river deployment projects aimed at achieving successful plastic interception. This role will involve assisting with project controls, planning, progress monitoring, and effective work processes.

“At Rivers Project Management, we work on transformative projects that protect our oceans from plastic pollution. We are looking for an eager candidate ready to embark on their project management journey and contribute to this vital cause. Join our team and apply your skills in an innovative, fast-paced environment." – Marco Piët, Director Deployments & Operations

THE ASSIGNMENT

The Junior Project Manager will assist in complex projects to rid the world’s oceans of plastic. You will work closely with the Project Managers and report progress to the Director Deployments & Operations while supporting the team in achieving interception objectives. Strong performance will lead to increased responsibility, including independently leading and managing projects.

RESPONSIBILITIES

Project Coordination & Support

• Support the project management team by providing assistance in project planning and execution.
• Collaborate with project managers to help maintain high quality standards and outputs.

Monitoring, Reporting & Risk Support

• Assist with project documentation, including status reporting and issue tracking.
• Participate in identifying and analyzing project risks, offering support in mitigation efforts.
• Assist with maintaining and updating budget and timeline tracking tables, focusing on accurate recordkeeping

Procurement & Financial Administration

• Prepare purchase requisitions and purchase orders.
• Process goods receipts and track deliveries.
• Maintain procurement and financial documentation, including procurement trackers and order status records.

Document & Systems Management

• Maintain organized and up-to-date project documentation and files in SharePoint.
• Support the use and upkeep of project administration tools and processes.

PROFESSIONAL QUALIFICATIONS

“Even if you don’t meet every professional qualification listed, we strongly encourage you to apply if you believe you have the right skills, experience, and motivation to contribute to our mission. We recognize that talent and potential come in many forms, and we value diverse perspectives and unconventional career paths. If you’re passionate about the work we do and confident in your ability to make an impact, don’t hesitate to submit your application—we’d love to hear from you”

• 0-2 years of experience in project management, preferably in relevant fields like engineering, construction, or environmental projects.
• Bachelor’s degree in a related field, such as engineering, business, or environmental science.
• Familiarity with project management methodologies (PMP, PRINCE2, etc.) is a plus but not required.
• Basic proficiency in project management tools and software (e.g., MS Project, MS Excel).
• Familiarity with MS Project, MS Teams, and SharePoint is beneficial.
• Understanding of basic budgeting and financial reporting principles is beneficial.

PERSONAL QUALIFICATIONS

• Team player – motivated to work collaboratively and support team goals.
• Detail-oriented, with an understanding of the importance of accuracy in documentation
• and planning.
• Strong organizational and time management skills.
• Curious and proactive, eager to learn and grow within project management.
• Capable of communicating effectively with team members and stakeholders.
• Adaptable and able to perform well in a fast-paced environment.

ADDITIONAL DETAILS

• Starting date: as soon as possible.
• A valid European Union work permit is highly preferred for this position (the role is based in Rotterdam, the Netherlands).
• As a non-profit organization, our salaries reflect our reliance on donations rather than commercial salaries.
• Conducting a pre-employment check is part of our recruitment process.
• We welcome applications from diverse backgrounds and are committed to an equal opportunity hiring process.