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Senior Sustainability Manager - Sustainable Fuels

Iscc System Gmbh

Köln permanent

Posted: January 9, 2026

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Quick Summary

Develop, maintain, and improve ISCC certification for sustainable fuels, focusing on aviation and maritime activities at ISCC headquarters in Cologne.

Job Description

Your tasks:
ISCC – International Sustainability and Carbon Certification is one of the leading certification systems for sustainability, traceability and the reduction of greenhouse gas emissions. Our activities and impact are expanding and our teams are growing exponentially since the last 3 years.
 
To further strengthen our Aviation & Maritime activities, we are looking forward to welcoming you as Senior Sustainability Manager with focus on Sustainable Fuels at ISCC headquarters in Cologne.
 
In this role, you will be responsible for developing, maintaining, and improving ISCC certification schemes in the field of Sustainable Aviation Fuels (SAF) and Alternative Marine Fuels in line with evolving regulatory and market requirements.
 
If you are passionate about sustainability and would like to join a culturally certified Great Place to Work® company with highly motivated and diverse teams making a real difference, we look forward to your application.
 
Your main duties will be:

• Support for the development, maintenance and continuous improvement of ISCC certification schemes for SAF and Alternative Marine Fuels
• Monitoring and assessment of aviation and maritime regulatory frameworks and their implications for ISCC certification
• Design and implementation of certification frameworks to ensure regulatory alignment and scheme integrity
• Development and maintenance of ISCC system documents, audit procedures, and training materials
• Coordination and delivery of ISCC trainings related to aviation and maritime sustainability
• Building and maintenance of strong relationships with stakeholders, including policymakers, fuel producers, airlines, and vessel operators
• Representation of ISCC at external events, either online or in person, such as conferences, stakeholder meetings, workshops, and webinars
• Proactive identification of new market opportunities and engagement with industry stakeholders
• Support for the expansion of biofuel markets through outreach and engagement


Your profile:
• University degree in law/policy, business management, environmental sciences, economics, bio-economy, natural sciences, or a related field
• At least 5 years of professional experience after graduation, including 3 years of relevant experience in certification, fuels, aviation, maritime, or related sectors
• Proven experience in renewable and sustainable fuels (e.g. SAF, alternative marine fuels) or conventional fuels
• Understanding of sustainability certification systems and relevant EU regulatory frameworks supporting biofuel advancement
• Knowledge of Chain of Custody methodologies relevant to SAF and/or Alternative Marine Fuels
• Proven experience in stakeholder engagement, external communications, and public speaking
• Experience in Client Relationship Management or Account Management
• Excellent English language skills (at least C1, written and spoken)
• Very good MS Office and general IT skills
• Strong communication, organisational, and analytical skills with a proactive and independent working style


Why us?:
We are an international and diverse team of passionate and experienced experts, joining forces for a sustainable future! We believe that our team is our core asset and we support our people as best we can. 
 
 To help you build your future and thrive with us, we offer:
 
 Great Team Environment
• Various team events throughout the year (Celebrating Diversity, Summer Team Event, Christmas Party)
• Close collaboration with our sister companies Meo Carbon Solutions GmbH, GRAS Global Risk Assessment Services, 4C Services, ClimatePal, and TYC
• The opportunity to work independently and shape processes

 
Individual learning and development plan
• Professional onboarding to help you have an ideal start with us
• Frequently feedback sessions to ensure a high quality of communication and mutual reflection 
• Many free language classes
• Access to several technical specific as well as training courses
• We promote from within! 

 
Work-Life Balance
• Hybrid set-up
• 4 weeks remote work at a place of choice (after probation)
• Flexible working hours and trust based working time
• 30 vacation days and 3 additional vacation days (Christmas Eve, New Year’s Eve, Carnival Monday)
• Sabbatical options

 
Financial benefits 
• A generous pension scheme (bAV) in line with our sustainability values
• JobTicket/Deutschlandticket
• Annual bonus scheme based on performance

 
Wellness Programs
• Subsidized Urban Sports Club
• Health weeks promoting healthy habits in personal and professional life


Ready to join our team?:
Then we would be happy to hear from you soon! Please apply via the button below with a meaningful cover letter, CV and any relevant certificates.
  
We are looking forward to your application and hope to welcome you in our team soon!
  
We are a company with equal opportunities for everyone and encourage applications from all suitably qualified candidates regardless of age, race, gender or any other criteria that is not a professional qualification for an open position.

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