About Us

It's all about the team

Sustainability must be considered holistically, and that’s best achieved with an interdisciplinary team—which is exactly what we are. We are a powerful team of engineers, business economists, and career changers. Whether it’s a status quo analysis, sustainability strategy, studies, or training—we support our clients on their path to greater sustainability.

Martin Granzow

Management Strategy

The brains founder of Nextra, likes to get things done directly, passionate about strategic issues, networker, finds balance playing tennis.

What is your motivation?

With Nextra, my goal is to fill my professional life with maximum purpose. And what could be better than working with motivated and curious clients on solutions for a more sustainable economy and society of tomorrow!

Janika Ofterdinger

Manager

Inspires with her expertise, enjoys tackling complex issues, brings good vibes, loves working at the interface of technology and business, her passion is bouldering.

What is your motivation?

It motivates me to help organizations seize their opportunity to become part of a solution—a solution that requires breaking new ground and bravely committing to a sustainable future.

Profilbild Britta Frommeyer

Manager

Enjoys complex issues, approaches problems analytically, and is enthusiastic about details, while always maintaining an overview. She finds balance through sports in water and on land.

What is your motivation?

I am convinced that long-term economic success can only be built on a foundation of ecological and social justice. As a consultant, I can drive the necessary transformation by supporting companies in conceptualizing and developing their sustainability strategies and by jointly uncovering the economic potential of sustainability activities.

Profilbild Marit Grewe-Salfeld

Senior Consultant

Enjoys tackling complex issues, combines an analytical problem-solving strategy with creative thinking, and finds peace through yoga and painting.

What is your motivation?

For me, sustainable development can only succeed in harmony with social, ecological, and economic aspects. It motivates me to actively contribute by working with companies on future-oriented, innovative strategies and solutions.

Laptop Nextra Consulting

Consultant

Loves new challenges, leaving familiar paths awakens your adventurous spirit, autonomous work is your goal.

What is your motivation?

Thinking holistically about sustainability, guiding companies towards greater sustainability, enjoying contributing to internal topics and team building.

Lydia Schmid

Consultant

Enjoys new challenges and has an eye for detail, cheerful and optimistic, finds balance through cooking, yoga, or a good book.

What is your motivation?

For me, sustainability is not just a personal concern, but I firmly believe in the positive influence of socio-ecological commitment on corporate profitability. This motivates me even more, as a young mind at Nextra, to actively shape the green transformation.

Profilbild Sarah Hirsch

Consultant

Enjoys delving into new topics, an analytical thinker with strong reflective abilities, finds balance through strength training and with her dog in nature.

What is your motivation?

I am convinced that through sustainable corporate development, we can make a significant contribution to overcoming global challenges. My determination to protect and preserve our environment for future generations fills me with a sense of responsibility and purpose.

Profilbild Anita Panov

Senior Expert (external)

Brings profound expertise from over 15 years of experience in the international automotive industry, covering purchasing, supply chain, and sustainability. She has first-hand knowledge of the industry’s demands and dynamics—from global procurement to the integration of ESG criteria throughout the entire supply chain. Whether it’s CO₂ balances, CSRD, or due diligence: her strength lies in connecting strategy and implementation.

What is your motivation?

I want to enable companies to achieve meaningful and measurable progress—ambitious, yet pragmatic. What particularly motivates me is when strategy, technology, and attitude come together.

Profilbild Jean-Christian Brunke

Senior Expert (external)

With his profound technical background in marginal abatement cost curves and over 15 years of consulting experience, Dr. Brunke is a recognized expert in setting sustainability targets and climate scenario analyses.

What is your motivation?

I am firmly convinced that sustainable economic success is only possible on an ecologically and socially just basis. In my role as a consultant, I drive the necessary transformation by helping companies develop and improve their sustainability strategies.

Profilbild Prof. Herstatt

Senior Expert (external) Scientific Advisory Board

With his proven expertise in innovation management and circular economy, Prof. Dr. Dr. h.c. Cornelius Herstatt strengthens Nextra’s strategic development. He has been an internationally recognized researcher and consultant in the field of innovation management for over 30 years. With his competence and experience, he offers Nextra valuable impulses to align consulting services for customers even more consistently with future-oriented innovation and sustainability topics.

What is your motivation?

I greatly enjoy working with motivated teams who jointly seek smart and sustainable solutions. After 30 years of research and consulting, I would like to actively contribute my experience and make a contribution to society. My interest lies in innovations – I am particularly enthusiastic about the principles of the Circular Economy and the Cradle2Cradle approach.

Profilbild Kathrin Ruhnke

Senior Consultant

Enjoys delving into new topics, approaches challenges pragmatically, has an eye for detail, recharges by hiking and baking.

What is your motivation?

When it comes to making our society future-proof, I love being right in the middle of it. It motivates me to develop concrete, implementable strategies together with companies that combine ecological, social, and economic aspects.. I am convinced that targeted measures are the key to entrepreneurial success and sustainable transformation.

Profilbild Carlotta Meyer-Burgdorff

Consultant

Enjoys delving into new topics and combines creative approaches with analytical thinking. She finds balance through sports, walks in nature, and cooking.

What is your motivation?

I am motivated by the conviction that traditional “business as usual” is no longer sustainable in the long run if we want to secure the future for coming generations. I see enormous potential for innovation and change in sustainable corporate management. It excites me to actively contribute to sustainable development not only privately but also professionally, and to support companies in developing future-oriented strategies.

Profilbild Khadija Sonst

Junior Consultant

MIBAS student with a focus on sustainable management. Enjoys familiarizing herself with complex and new topics. She finds balance in dancing, knitting crocheting.

What is your motivation?

I am convinced that companies play a crucial role in shaping a sustainable society. My professional goal is to achieve measurable impact—ecologically, socially, and economically—through the development and implementation of sustainable strategies. My focus is on responsible corporate action that creates long-term impact and goes beyond purely economic success.

Profilfoto Finn Bickelhaupt

Junior Consultant

MIBAS student and analytical mind with a focus on sustainability management. I love to delve into complex and new topics and actively drive things forward. As an enthusiastic (though not always steadfast) surfer, I am currently compensating for the lack of waves in Hamburg with ambitious triathlon preparation.

What is your motivation?

I am convinced that economic success can only be based on ecological and social justice. For me, sustainability and business are not opposites, but the basis for future growth. With analytical thinking and strategic action, I want to contribute to the necessary change and achieve measurable impact through my work – for a future worth living for future generations.

Profilfoto Leonie Reinel

Junior Consultant

MIBAS student with a focus on sustainable management. Approaches new topics with curiosity and openness to different perspectives. Finds balance in jogging on the Außenalster, in balanced café chats and heated game nights.

What is your motivation?

I do not see sustainability as a restriction, but as a great opportunity for innovation and more mindfulness in entrepreneurial action. I am motivated by the idea that companies can have a long-term positive impact through responsible management – for themselves, society and the environment.

Profilbild Theo

Chief Happiness Officer

Ensures we always go into client meetings with a smile and no lunch goes unsupervised. He is a master at lifting spirits and boosting morale. His specialties include professional break management, effective leftover utilization, and advanced non-judgmental listening.

What is your motivation?

Theo lives by the philosophy that every interaction, be it a friendly stroke or a shared game, offers the chance to make someone’s day a little better. His tireless energy and commitment to the well-being of everyone in the office reflect his deep conviction that happiness must be shared to multiply.

Want to work with us?

What awaits you? Working as equals with the ambition to learn from and with each other. Apply now and become part of the team.

Publications

In-depth and well-founded practical insights

This anthology explores the future of the economy through sustainable innovations. It shows how companies leverage the circular economy to become both more environmentally friendly and economically successful. Leading experts from academia and practice share their knowledge and present proven practices that promote the transition to a sustainable future. With insights into regulatory frameworks and innovative business models, the book offers valuable inspiration for entrepreneurs
and executives interested in a circular economy.

Fundamentals and Concepts for Practice

Renowned specialists and executives from the financial sector explain their practice-proven approaches to strengthening sustainability in various business areas.
The nine contributions reflect current trends and developments and present concrete measures on operational ecological topics, as well as on issues of sustainable equity and debt orientation or corporate organization.

Analysis – Results – Implications

Analysis of the sustainability performance of Luxembourg’s largest pension fund, the Fonds de Compensation (FDC). Based on the second sustainability report, a comprehensive assessment of the investment strategy is conducted, focusing on ecological and particularly climate-related risks. The analysis also includes the development of key recommendations to enhance the FDC’s sustainability performance.

The Path to Sustainable Finance

Renowned specialists and executives from academia, society, and especially the financial sector provide insights into the state of the discussion against the backdrop of the intensifying debate on sustainable financial markets, and present solutions for existing challenges on the path to sustainable finance. The anthology provides insights into current trends and developments, as well as strategies, instruments, and operational processes that are already being applied in practice today.

Conception – Analysis – Implications

Analysis of the 100 largest equity funds in Luxembourg based on a comprehensive sustainability key performance indicator system from the rating agency ISS ESG. The funds were analyzed and ranked based on both classic backward-looking metrics and available forward-looking metrics.

Assessment of Transformation Pathways for Various Emission-Intensive Sectors

In a joint project with Prognos AG and NKI, the transformation requirements for various emission-intensive sectors were analyzed within an ambitious transformation scenario, and the resulting financing needs in Germany up to 2050 were quantified. Various emission reduction technologies were assessed regarding their emission reduction potentials and the costs associated with their implementation.

Challenges and Solutions Using Brazilian Soy as an Example

Analysis of the central challenges in establishing deforestation- and conversion-free value chains and examination of solutions to overcome existing barriers. The analysis identifies areas for action and provides recommendations for companies, policymakers, and civil society organizations. In addition to a literature review, the study is based on interviews with industry experts and stakeholders along the supply chain.