Do you want to turn sustainability ambitions into real-world impact?

At GSES, we make sustainability measurable and actionable at organisational, product, asset, and event levels. Through our platform and the Nature Impact Score (NIS), we provide retailers and manufacturers with clear insights into the environmental impact of their products. This enables them to make better decisions and communicate their sustainability efforts with confidence.

This is becoming increasingly important. The Nature Impact Score is now displayed in all Kruidvat and Trekpleister stores (learn more)! We are also working on exciting projects in the retail sector with clients such as ACTION, Leen Bakker, Xenos, and Kwantum.

As our client base continues to grow, we are looking for an experienced Project Manager who can turn sustainability ambitions into successful implementations. Someone who takes ownership, brings structure to complex projects, and ensures that great ideas become real-world solutions. That’s where you come in.

Your role

As a Project Manager, you will help clients turn their sustainability ambitions into practical solutions. You translate their needs into clear action plans, keep projects on track, and ensure everyone knows what needs to happen next.

Of course, you won’t be doing this alone. You will work closely with clients and colleagues in an international team, based in the heart of Rotterdam.

What will you do?

• Lead client projects from kick-off to delivery, managing scope, timelines, milestones, and deadlines
• Translate client needs into clear, practical, and achievable project plans
• Act as the main point of contact for clients throughout the implementation process
• Coordinate internal teams, including data specialists, IT professionals, and sustainability experts, to ensure smooth project execution
• Monitor progress, identify potential risks early, and keep stakeholders informed
• Identify opportunities to improve our project approach and help develop and optimise our processes as we grow

Who are you?

• You have at least 5 years of experience in project management
• You take initiative and maintain a clear overview, even when managing multiple projects simultaneously
• You are a strong communicator who enjoys working with different stakeholders, from operational teams to senior management
• You are fluent in both Dutch and English, written and spoken

Leuk om te hebben:

• Experience in a SaaS, scale-up, or consultancy environment
• An interest in sustainability, retail, or supply chains

What do we offer?

• A full-time position (36–40 hours per week)
• Competitive employment benefits, including holiday allowance, travel allowance, laptop, etc.
• A role with real responsibility and ownership within a growing scale-up
• An international team and an office in the heart of Rotterdam
• The opportunity to make sustainability measurable and turn insights into meaningful action

Sound like a match?

We kindly ask recruitment agencies not to contact us regarding this vacancy.

Do you want to help companies turn sustainability ambitions into real-world action?
At GSES, we make sustainability measurable and actionable, whether it involves organisations, products, assets, or events. Through our platform, the Enterprise Score, and the Nature Impact Score (NIS), retailers and manufacturers gain clear insights into the environmental impact of their businesses and products. This enables them to make better decisions and communicate their sustainability performance with confidence.

Today, this is becoming increasingly important. We also support a growing number of clients in meeting sustainability-related regulatory requirements.
More and more organisations recognise the value of our mission, and we’re proud to work with leading companies across industries such as retail, construction, transportation, and marketing, both in the Netherlands and internationally.
As GSES continues to grow rapidly, we’re looking for a new colleague to strengthen our Support Team!

Jouw rol
As a Customer Support Specialist, you will be the first point of contact for clients who have questions about our platform. You’ll guide them through the system, solve problems, and make sure they get the most out of GSES.
Your interactions with clients are incredibly valuable. By sharing their feedback, challenges, and suggestions with the team, you’ll help us continuously improve our platform and customer experience.

Of course, you won’t be doing this alone. You’ll work closely with project managers, IT specialists, and other colleagues in an international team, based in the heart of Rotterdam.

What Will You Do?
• Respond to customer inquiries via email, phone, and [ticketing system/chat]
• Support clients in using the GSES platform, including submitting data and understanding their results
• Analyse technical issues and escalate them to the IT team when necessary
• Assist with onboarding new clients, ensuring they feel confident and comfortable using the GSES platform

Who Are You?
• You have at least 2 years of experience in customer success or customer support, preferably within a software company
• You are customer-focused, proactive, and enjoy solving problems
• You take ownership of customer issues and follow through until they are resolved
• You are an excellent communicator who can explain complex topics clearly and confidently, especially over the phone
• You are fluent in both Dutch and English, written and spoken

Nice to Have:
• Experience working with SaaS platforms or B2B clients
• Experience with ticketing systems such as Zendesk, Freshdesk, or HubSpot
• An interest in sustainability or data

What Do We Offer?
• A full-time position (36–40 hours per week)
• Attractive employment benefits, including (holiday allowance, OV business card, laptop, etc.]
• A varied role with plenty of client interaction and responsibility
• The opportunity to work in an international team, with an office in the heart of Rotterdam
• The chance to make a real contribution to turning sustainability goals into measurable results and meaningful action

Does This Sound Like a Match?
We’d love to hear from you!

Recruitment agencies: unsolicited approaches regarding this vacancy are not appreciated.