Quantis is delighted to meet you at the HEC Impact Jobs Fair on 4 February 2026.

We are always keen on networking with innovative and enthusiastic individuals ready to drive meaningful change.

Learn, grow, and make a difference. Begin your consulting journey with a team shaping the future of sustainability. 

• Do you want to learn from leading experts in environmental sustainability? 

• Do you want to contribute to projects that help companies reduce their footprint and rethink their strategy? 

• Are you excited to explore diverse sustainability topics and build expertise along the way? 

• Are you ready to grow in a collaborative environment where curiosity, learning, and impact go hand in hand? 

Interested in an internship at Quantis?

As a Sustainability Intern, you will collaborate with sustainability consultants to support them in delivering sustainability strategy projects and assisting clients in their sustainable transformation journey. This role provides hands-on experience in sustainability consulting, project management and client engagement, offering a valuable opportunity to develop both technical and soft skills in a dynamic and impact-driven environment.

Locations:

- Paris, France - July 2026

- Milan, Italy - Q2/Q3 2026 TBD

- Berlin/Munich, Germany - Q2/Q3 TBD

Application deadline: 18 February 2026.

Does this describe you and your next internship?

• You’re motivated to put your skills to work towards our mission of aligning businesses with Planetary Boundaries.
• You’re eager to learn, curious and motivated to increase your experience in sustainability strategy and consulting.
• You’ll get boosted by a fast-paced and diverse role: contributing to the delivery of sustainability projects, including data collection, analysis, document drafting, and presentation development
• You’re a team player that works quickly, independently and on schedule. Your analytical and organizational skills are top-notch
• You have familiarity with sustainability frameworks: LCA, Carbon Footprint, main ESG frameworks and report drafting (CSRD, Double Materiality Assessment, ESRS, GRI, CDP, Taxonomy, TCFD, etc.)
• You would like to be exposed to real-world client projects and transformation initiatives, having the opportunity to test your project management skills
• You speak fluent English and French (or the local language of the branch in question if you are interested in an internship in Germany or Italy).
• You have started shaping your sustainability consulting skills during University or through a first professional experience.
  

If you're looking for a permanent role, please visit our career site: https://quantis.com/about/join-us/

You can also send us an open application to join our Talent Pool, if you don’t see any openings that match your unique profile at this time.

We look forward to receiving your application!

Why you’ll love Quantis?

Quantis, a BCG company, is a leading sustainability consultancy tackling the world’s most pressing environmental challenges. For nearly two decades, our expert team has partnered with organizations across the globe to transform industries and shape an economy that thrives in harmony with nature. We guide companies from business as usual to business at its best by uniting the latest science with strategic insights, helping them reduce impacts, implement solutions, and operate within planetary boundaries.  

United by a common purpose, our 250+ professionals embody a unique, collaborative culture that we call the Quantis Spirit. We are innovative. We are impact-oriented. We are science-driven. We are Quantis. 

Learn more about Quantis and our mission. 

Unlocking the Potential of All Quantisians 

At Quantis, Unlocking Potential means empowering our employees to thrive, enabling them to drive our mission and manifesto forward—creating meaningful impact for people and the planet. 

We aim to achieve this by nurturing a culture rooted in collective action, and shared purpose, where diversity is cherished, inclusion is lived, mental wellbeing is supported, and opportunities are open to all.  

This extends to our clients, their clients, and their entire value chain as sustainable thinking and collective representation are integral components of our purpose to transform the way that businesses operate. 

This is how we commit to our people, live our manifesto, and shape a sustainable future - together.