Sustainability & Certification Intern

Stanley/Stella; Brussel Hoofdstad; On-site; EUR 8,900 - 13,000; Full time

Job summary

Stanley/Stella is offering a Sustainability & Certification Intern position to support the team with day-to-day administrative tasks and data management related to sustainability certifications. You will gain practical experience in sustainability operations within an international fashion company committed to responsible sourcing.

The role focuses on data handling, document management, and coordinating certification processes across teams in a collaborative, multilingual environment.

Qualifications

• Organized, detail-oriented and able to manage several tasks.
• Good communication skills and confident using Microsoft Office, especially Excel.
• Fluent in English.
• Curious, proactive and eager to learn.
• Interest in sustainability or environmental topics is a strong plus.
• Comfortable working with data and collaborating with teams.

Responsibilities

• Provide administrative and operational support to the Sustainability team.
• Assist in data collection, document management, and information tracking.
• Support the preparation and organization of sustainability-related documentation.
• Maintain certification records and databases.
• Assist in collecting and organizing documents required for certification processes and renewals.
• Track certification-related requests and follow-up actions.
• Monitor the Sustainability team mailbox and categorize incoming requests.
• Route requests to the appropriate team member and respond using templates.
• Update tracking files and databases, perform basic data verification and quality checks.

Skills

Organized

Detail-oriented

Communication skills

Microsoft Excel

MS Office

Fluent in English

Curious and proactive

Team collaboration

Tools

Microsoft Office

Excel

Job description

Your purpose at Stanley/Stella

As a Sustainability & Certification Intern, you will support the Sustainability team with day-to-day administrative and operational activities related to sustainability certifications, data management, and internal request handling.

This internship offers an opportunity to gain practical experience in sustainability operations and certification processes within an international fashion company committed to responsible sourcing and sustainable practices.

Your role and impact

Team Support

• Provide administrative and operational support to the Sustainability team.
• Assist with data collection, document management, and information tracking.
• Support the preparation and organization of sustainability-related documentation.

Certification Support

• Help maintain certification records and databases.
• Assist in collecting and organizing documents required for certification processes and renewals.
• Support the tracking of certification-related requests and follow-up actions.

Request & Inbox Management

• Assist in monitoring the Sustainability team mailbox.
• Categorize incoming requests and route them to the appropriate team member.
• Support responses to standard requests using existing templates.

Data Quality & Reporting

• Update tracking files and databases.
• Perform basic data verification and quality checks.
• Help ensure information remains accurate and up to date.

Required Skills & Profile

• Organized, detail-oriented and comfortable managing several tasks at once.
• Good communication skills and confident using Microsoft Office tools, especially Excel.
• Fluent in English.
• Curious, proactive and eager to learn.
• Interest in sustainability, climate or environmental topics is a strong plus.
• Comfortable working with data, administrative tasks and collaborating with different teams.

What You Will Learn

• Sustainability and certification processes.
• Data and document management.
• Project coordination and team support.
• Working with multiple departments in an international environment.

During This Internship, You Will Gain Practical Experience In

• Sustainability and certification processes.
• Data and document management.
• Project coordination and team support.
• Working with multiple departments in an international environment.

Success in the Role

• Support the team's daily administrative and operational activities.
• Maintain accurate documentation and tracking files.
• Handle routine requests independently.
• Understand the basics of sustainability and certification activities within the business.

About Us

Founded in 2012, Stanley/Stella has become Europe’s leading brand for premium and sustainable blank apparel. Our mission is simple yet ambitious: to redefine how responsible fashion is made, distributed and experienced.

We combine contemporary design with uncompromising quality and a deeply embedded commitment to sustainability. Every choice, from the fabrics we select to the long-term partnerships we build, reflects our belief that doing better is not optional; it is essential.

At Stanley/Stella, excellence is not a slogan. It is our way of working. We operate with transparency, respect and an entrepreneurial spirit that empowers every team member to make an impact. Together we are shaping a more conscious and inspiring future for our industry and for everyone who wears our products.

Join a company that leads by example, grows with purpose and creates change that lasts.