Sustainability Consulting Intern

Learn, grow, and make a difference. Start your sustainability consulting journey with Quantis. 

• Are you looking to turn your academic knowledge into practical experience and contribute to real-world sustainability challenges? 

• Are you curious to discover how companies can reduce their environmental footprint and transform the way they do business? 

• Would you like to learn from experienced sustainability consultants while developing your technical, analytical, and consulting skills? 

• Are you excited to join a collaborative, international team where you can learn, contribute, and grow? 

THE ROLE 

As a Sustainability Consulting Intern, you will join our consulting team and gain hands-on experience contributing to real client projects. Working alongside experienced consultants, you will develop your technical and analytical skills while supporting companies in addressing their environmental sustainability challenges. 

Your main responsibilities will be to: 

• Support consultants in delivering technical projects by contributing to accurate, high-quality analyses. 

• Conduct quantitative and qualitative analyses, including life cycle assessments (LCA), corporate and product footprinting (carbon, water, etc.), and climate impact reduction scenario modelling. 

• Collaborate with project teams to explore solutions and develop recommendations addressing clients’ sustainability challenges. 

• Contribute to the development and maintenance of databases. 

• Help prepare clear and engaging reports and presentations to communicate analyses, results, and insights to clients. 

Throughout your internship, you will have opportunities to learn from experienced colleagues, strengthen your technical expertise, and develop your consulting skills. We value curiosity, initiative, a willingness to learn, and the ability to take ownership of your development. 

WHY YOU’LL LOVE QUANTIS 

Quantis, a BCG company, is a leading sustainability consultancy helping organizations address complex environmental challenges. For two decades, our expert team has partnered with organizations across the globe to bring sustainability into strategy, decision making, and action. We guide companies from ambition to action by uniting the latest science with strategic insights, helping them navigate complexity, make progress on sustainability priorities and create lasting value.    

United by a shared commitment to making meaningful progress, 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.   

ARE YOU READY TO TAKE YOUR FIRST STEP INTO SUSTAINABILITY? 

• You’re currently completing or have recently completed a Master’s degree in sustainability, environmental engineering, chemistry, agricultural sciences, or another relevant field. 

• You’re motivated to apply your academic knowledge to real-world sustainability challenges and contribute to our mission of aligning businesses with Planetary Boundaries. 

• You have a science-based mindset, strong analytical skills, and an interest in understanding how businesses can address environmental challenges. 

• You’re interested in developing your expertise in technical analysis, data management, and Life Cycle Assessment (LCA). 

• You’re comfortable working with data, interpreting results, and communicating findings clearly to different audiences. 

• You enjoy working with others, asking questions, sharing ideas, and learning from different perspectives. 

• You have a very good knowledge of MS Excel and PowerPoint. 

• You’re curious about generative AI tools and interested in exploring how to use them thoughtfully and critically. 

• You’re fluent in French and English.

SOME OTHER DETAILS TO CONSIDER 

• Contract: 6 months end-of-studies internship 

• Location: Paris

• Start date: January, 2027 

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.