Senior Mendix Developer
ESG-Platform
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Company Overview:
We are a fast-growing, international team with colleagues in the USA, Europe, and APAC. By combining cutting-edge technology and sustainability expertise, we help organizations achieve their sustainability goals efficiently and effectively.
Our modular platform helps organizations streamline sustainability processes, reduce risk, improve reporting, and track performance efficiently. With deep sector expertise and AI automation, Sustaira makes it easy to turn sustainability strategy into measurable action.
We are on a mission to accelerate sustainability impact. Our platform and AI-powered solutions empower sustainability leaders to create measurable outcomes faster, smarter, and at scale.
Global Impact: Contribute to initiatives that make a real difference for organizations worldwide.
Innovation and Learning: Work at the intersection of AI, enterprise technology, and sustainability solutions.
Collaboration Across Cultures: Join a diverse team that values curiosity, integrity, and teamwork.
Growth Opportunities: Sustaira is expanding rapidly, offering career development and professional growth.
SUSTAIRA is a fast-growing, international team with colleagues in the USA, Europe, and APAC. By combining cutting-edge technology and sustainability expertise, we help organizations achieve their sustainability goals efficiently and effectively.
Senior Mendix Developer ESG
As a Mendix developer, you will be part of a team that’s responsible for developing and maintaining solutions on the Sustaira platform with its customers and partners. This role will involve collaborating with cross-functional teams, translating business requirements into technical solutions, and contributing to the overall sustainability goals of our customers.
You are an experienced Mendix developer and solely focussed on sustainability initiatives and you are keen to make a difference, whether it’s working on our Sustainability platform, app template implementations, or completely new and custom apps… that is the passion and motivation we wish to welcome onboard our mission.
Experiences and Qualifications
Minimum of 3 years Mendix development experience, preferably customer-facing.
Mendix certification: Advanced or (preferably) Expert.
Ability to take a leading role in customer projects and/or internal initiatives.
Highly proficient in English (C1 or higher). Dutch not required.
You enjoy working in a dynamic environment and professionalising the organisation as we grow.
Eligible to work in the Netherlands.
You are available to work at least 32 hours per week.
You have an interest in sustainability. It’s a plus if you already have experience in this domain.
Experience with integrating AI into Mendix solutions is a plus.
Recognized Value
You will work with experienced Mendix colleagues on a technically challenging, customer-facing product and projects in a dynamic international setting.
Competitive base and variable compensation
Net sales proceeds bonus, equity options and comprehensive benefits
30 vacation days (based on a 40-hour work week)
Hybrid position: come join our shared office space in Rotterdam and you also have the possibility to work remote.
Join Our mission
We hire people who are driven by purpose, focused on results, and excited to make an impact. We welcome talented individuals from all backgrounds, disciplines, and experience levels who want to contribute to measurable sustainability outcomes while growing their skills in a dynamic, multicultural environment.
Our culture is built on collaboration, curiosity, and accountability. We encourage team members to:
Work together across regions and functions to solve meaningful challenges
Learn continuously and share knowledge openly
Take initiative and contribute to innovation
Celebrate achievements and measurable impact
Interested?
Send us a note, we are looking forward to be hearing form you... lennaert@ospreyinternational.eu
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