We at
The Climate Choice

are working jointly on the decarbonization of companies and their supply chains.

Our Mission

Driving decarbonization of Scope 3 by answering any climate-related question about companies.

Our Vision

Every buying decision is a climate decision.

Our Team

Lara Obst

Co-Founder & Chief Climate Officer

At THE CLIMATE CHOICE, Lara is responsible for Operations, Sustainability as well as Communications and can answer any question about climate change.

Lara looks back on more than 15 years of experience in the climate and innovation sector and has gained broad experience in research as well as in working with companies. Lara is particularly enthusiastic about one thing: making climate transformation successful and practically accessible for every company. She supports our customers to reach their climate targets and implement climate protection measures right through to the supply chain.


Yasha Tarani

Co-Founder & Chief Executive Officer

At THE CLIMATE CHOICE, Yasha is responsible for business development, finance and sales.

He holds his Bachelor’s degree in Media Economics from Hochschule der Medien and a Master’s degree in Management from Leuphana University. Yasha previously founded the SaaS company resmio.com and built it into one of the leading restaurant software providers in Germany as CEO until 2017. Afterwards, he supported various tech start-ups in fundraising, management and sales issues.


Dr. Reyhood Farhan

Co-Founder & Chief Data Scientist

At THE CLIMATE CHOICE, Rey is responsible for Product Development and Data Science.

He holds a Master’s degree in Physics and a PhD in Bioinformatics. After working as a Data Scientist at PwC and SoundCloud, Rey most recently led the Data Science team at Silicon Valley product development firm Originate.com as a Director, working on data-intensive products for companies in the financial sector such as Blackrock, Pimco, Prudential.


Nikolas Martens

Head of Engineering

At THE CLIMATE CHOICE Nikolas is responsible for Software Development and Operations.

After his diploma in Information Technology at the TU München, Nikolas was working as Software Engineer, Coach and Consultant with several internet-companies in Berlin, employed as well as freelancing. His core areas are product development, software design and Agile methods.


Isabelle Fischer

People & Talent Manager

At THE CLIMATE CHOICE, Isi is responsible for People & Talent.

After her studies in Psychology, she started her career at a Berlin-based HR consultancy, but after a while she decided to go back to Lisbon for her Master in Organizational Consulting & HR. In the meantime, she supported various startups in the area of Talent Acquisition and People Operations.


Christos Atzinas

Frontend Engineer

At THE CLIMATE CHOICE Christos is responsible for Frontend Web Development.

He holds a Diploma in Product and Systems Design Engineering, and has worked for several years in the field of advertising and multimedia applied arts. For the past two years he brings his combined experience into web development.


Rafael Savastürk

Backend Engineer

At THE CLIMATE CHOICE, Rafael is responsible for the development and maintenance of our backend systems.

At the end of his higher education for Computer Science, he had already been able to gather up to three years of experience in several technical frameworks used by the company.


Shramana Takur

Backend Developer

At THE CLIMATE CHOICE, Shramana is responsible for the development and maintenance of the backend systems.

Shramana found her love for programming during her Bachelor’s in Physics and has pursued two consecutive Masters in Computer Science since. She started as a Java developer in Accenture and eventually started learning Python, and she hopes to get better at it with every passing day. She is also a data science enthusiast with a keen interest in knowledge graphs.


Steven Hein

Product Development

At THE CLIMATE CHOICE, Steven is responsible for product development.

Steven has a degree in Bioengineering and has been working in various areas of IT for over 10 years. He is an experienced javascript developer and web app builder, having honed his skills through work as an employee, freelancer, and volunteer. Steven is passionate about using technology to solve difficult problems in the world, and is always eager to take on new challenges and projects that aim to make a positive impact.

Do you want to work with us?

Join our Team of passionate climate and tech enthusiast who want to have a positive impact on climate change.

Our Team Values


Challenge yourself, grow beyond!


Responsibility, all together!


Drive real change, today!

Advisory Board

Christopher Keefe

CMO & Entrepreneur

As Chief Marketing and Communications Officer at Omidyar Network, Christopher led global marketing for an investment firm founded by eBay founder Pierre Omidyar. Previously, he was Sr. Vice President at GMMB, a renowned U.S. consulting firm whose clients included “Obama for President,” the Bill and Melinda Gates Foundation, Visa and the United Nations Foundation.


Corinna Weinmiller

Sustainability Manager at Nestlé Deutschland

As Sustainability Manager at Nestlé Germany, Corinna has more than 15 years of experience in sustainable supply chains and is currently focused on the climate roadmap for the company. As a driving force, Corinna was instrumental in getting Nestlé Germany to join a petition on CO2 labeling of food products.


Tilmann Silber

Climate Expert and Strategist

As South Pole’s Director Sustainable Supply Chains, Tilmann built a leading consulting team that develops climate strategies for some of the world’s largest companies. His focus is on supply chains and the consumer goods industry. As a former Board Member of the International Platform for Insetting (IPI), he is one of the pioneers of “insetting”, the development of climate change projects in supply chains. His experience includes companies such as Nestlé, Unilever, L’Oréal, Chanel, Mondelez, Beiersdorf, Mars, Coop and Lidl.


Yvonne Jamal

Founder & CEO at JARO Institute for Sustainability and Digitalization (e.V.)

As Chairwoman of the Board of the JARO Institute for Sustainability & Digitalization, Yvonne and her committed JARO members want to make sustainable action the standard for business, and she is focusing intensively on capacity building and networking among the various stakeholders. In particular, the establishment of sustainable procurement with responsible supply chains is close to her heart. To this end, she recently developed a complete e-learning program with the JARO Institute. Her previous professional positions were with companies such as Zalando, TUI, Hilton and Accor.


Alexander Grosse

Advisor & Entrepreneur

Alexander Grosse has been active in the software scene for 25 years. He started as a developer, founded two startups and was head of development at SoundCloud, among others. After his last job at BCG’s Digital Ventures (a corporate venture builder), Alexander works as a business angel and startup advisor. He is co-author of the book ‘Scaling Teams’, which is about how to best address startup growth pains.


Armin Iskander

Founder & CEO, Iskander Business Partner

Armin Iskander, a computer scientist, is an entrepreneur with a passion and an expert when it comes to implementing product and customer ideas in the company. He started his career at Roland Berger and founded Iskander Business Partner in 2005. Today he is CEO, supervisory board member and investor. In his day-to-day business, he works as a management consultant. His clients include well-known start-ups and medium-sized companies as well as international corporations.


Josh Seidenfeld

Renewable Energy & Climate Leadership

Josh Seidenfeld has been involved in renewable energy since he first marketed solar to Texas ranchers in 2002. Most recently, he spearheaded development of new supply chain renewable energy programs at Apple and Meta. Previously, Josh helped re-launch PG&E’s M&A efforts and made grants to environmental change makers while at the Energy Foundation. He holds an AB from Columbia and an MEM/MBA from Duke.


Our actions, transparency & network

THE CLIMATE CHOICE also does not want to release even more emissions, but rather prevent them as far as possible and operate in a climate-neutral manner. We want to save more emissions than we release. To this end, we use solutions that allow us to do this from the very beginning. We host this website at biohost.de, use GLS Bank for finances, we use green electricity in our home office and use co-working offices that are equipped to be as sustainable as possible, we cover all distances in Berlin by bike, we travel in Germany only by train, we pay attention to predominantly vegetarian, regional and seasonal food and we offset our footprint according to the guidelines of Leaders for Climate Action. Nevertheless, we are only at the beginning of our journey and will keep you informed about our progress towards becoming a “climate positive” company.

We are part of several entrepreneurial networks and initiatives for climate action in business. Among others, we are allowed to support Leaders for Climate Action, Entrepreneurs4Future as well as the EntrepreneursPledge and are members of the German Sustainable Business Association. We are also particularly pleased to be honorary members of the Impact Hub Leipzig!