We're on a mission to maximize the impact of sustainability leaders worldwide.

The Sustainability Circle was founded with the shared belief that in order to accelerate the transformation of organizations worldwide, there needs to be a strong collective of highly skilled sustainability leaders who come together and help each other succeed. At TSC, they get together in a trusted space exclusive for them to jointly solve their challenges, share unique insights and build powerful career-making relationships.

“The Sustainability Circle is a private club for sustainability leaders that has been specifically designed for their challenges and needs. ”

Favicon of 'The Sustainability Circle' featuring the abbreviation 'TSC.' in white lettering with a vibrant pink dot, all set within a round, black background. This icon symbolizes a premier community for sustainability professionals, emphasizing career growth and impactful change.
Max & Jonas
Founding Team
Members in the Spotlight

Curious About Who’s Inside TSC?
Meet This Month’s Spotlighted Members

Mikael Salo
CSO
DistIT & State of Sustainability
Rawaa Ammar, PhD
Chief Sustainability & Impact Officer
Resortecs
Javier López Gómez
Global Head of Corporate Sustainability
SGS
Sorouch Kheradmand
Global Head of Sustainability
Schneider Electric
Nadim Imrit
Group Chief Sustainability Officer
SBM Group
Katarina Ždraljević
Group Head of Sustainability
ProCredit Group
Leonhardt Jancso
Group Lead Sustainable Value Creation
BayWa AG
Bernhard Gehmayr
Group Sustainability Manager
ROXEL Holding GmbH
Kristina Kölling
Head of Environment & Circularity
Tchibo
Dr. Kim Sophie Mengering
Head of Standards, Analytics & KPIs Sustainability
Deutsche Bahn
Julia Weber
Head of Sustainability
Doka
Damien Didier
Head of Sustainability
Daphni
Dr. Johannes Knubben
Head of Sustainability
HiPP-Group
Marlene Johler
Head of Sustainability & Public Affairs
Hammerer Aluminium Industries GmbH
Sandra Elizabeth Leyva Martinez
Head of Sustainability (Sr. Director)
CHEP
Antonio Vizcaya Abdo
Professor of Corporate Sustainability
Universidad Nacional Autónoma de México
Pina Schlombs
Sustainability Lead
Siemens
Nicole Mercedes Zethelius
Sustainable Business Strategy Executive
Dr Inga Kramer
VP Corporate Sustainability
LANXESS
Sustainability Leadership is at a Crossroads

Driving Real Business Value with Sustainability in Uncertain Times

In times of geopolitical turmoil and shifting economic priorities, relying on goodwill or regulation is no longer enough. The pressure is mounting to prove that sustainability drives real business value—not as a compliance exercise, but as a competitive advantage. Sustainability leadership today is about securing resilience, maximizing long-term profitability, and proving financial impact. As a sustainability leader, you are, above all, a business leader. The challenge is clear: sustainability must be embedded across all functions—not as a side initiative, but as a strategic imperative for business continuity and success.
‍At TSC, you’ll connect with who share this mindset—leaers who understand the challenge, are committed to driving real change, and are here to support each other in making it happen.

Connecting Globally, Gathering Locally Through Chapters Worldwide

Meeting in person builds connections that are hard to replicate digitally. TSC members foster these bonds through exclusive events like dinners and happy hours in hubs around the world.

Feature image representing upcoming in-person events for The Sustainability Circle in major cities: Berlin, London, and Stockholm. The image highlights iconic landmarks, symbolizing the establishment of local chapters for sustainability leaders to connect and collaborate.

The TSC Team 💜

We’re here to make your TSC experience meaningful. Need support, have feedback, or want to chat over coffee? Just reach out!

Max has a background in both business and software development. Prior to founding TSC, he was heading the product development of an Energy Data IoT Platform working alongside sustainability managers.

Maximilian Schmitt

Co-Founder
 After completing his Econ Master's in Rotterdam, Jonas worked in different strategic roles within climate tech. Prior to founding TSC, he led the strategy team at a Series B Venture focused on decarbonizing the building sector.

Jonas Wiedenhorn

Co-Founder

Varsenik Mirzoyan

Partnerships Lead

Alexandra Wicksell

Leadership Coach & Advisor