Our Team

Etienne founded Longevity Partners in 2015. Prior to that, Etienne worked at Knight Frank, JLL and the United Nations Environment Programme (the leading global environmental authority that sets the global environmental agendas).

Etienne has more than a decade of experience in sustainable property investment and strategy.

In 2019, Etienne won the EG Awards in the category ‘Future of Real Estate’. Before that, Etienne was picked to be an Estate Gazette’s ‘Property Rising Star’ and nominated for numerous awards as one of the most active young leaders in the sustainability and real estate industries. He regularly speaks at high-level events, giving his vision for smart cities, carbon-neutral buildings, wellbeing in the work place and the future of the real estate industry.

Etienne graduated from the London School of Economics. A keen sportsman, Etienne has run nine marathons and enjoys playing tennis, sailing, skiing, cycling and golf. He is married, with a daughter and a son.

Ed joined Longevity in September 2022, following 15 years of experience working as an engineering consultant. Ed brings with him global project experience, including 5 years in the Asia-Pac region. As group Technical Director, Ed spearheads technical optimization across our services. He is an expert in multiple areas, including building energy efficiency, asset, and portfolio scale net-zero carbon strategies, passive design, heritage buildings, and air quality.

Stephen has over 20 years of experience in financial leadership across global markets, with expertise in financial strategy, operational efficiency, and business transformation.

Before joining Longevity Partners, he spent nearly 21 years at ERM (Environmental Resources Management), where he led financial strategy across the UK and Asia-Pacific, managing operations in 12 countries and driving EBITDA growth. He later served as VP of Financial Operations at Prescient Healthcare Group, overseeing financial planning, ERP implementation, and ESG initiatives, including Ecovadis Silver Certification and progress toward B Corp status.

Stephen is passionate about financial performance, sustainability, and driving long-term environmental impact.

Helena is an accomplished multi-channel marketing and communications leader known for her expertise in financial services, private equity, and fintech, with previous roles including senior positions at Barclays Investment Bank, Deutsche Bank, Tradeweb, Permira and Marex.

As global head of marketing and communications, she brings over 25 years’ experience in strategic global communications, change management, crisis communications, investor relations, brand positioning, and digital transformation.

Helena is passionate about wildlife conservation and sustainability and completed the CISL Business Sustainability Management Certificate with distinction from Cambridge University in 2023.

Helena holds a degree in Industrial Economics from Nottingham University and the Non-Executive Director Diploma from the Financial Times.

Punam has 10+ years’ experience across the professional and financial services sector including a Fortune 500 company and at various leading law firms. As a true generalist – she has a vast array of legal experience covering complex commercial litigation, commercial contracts/corporate, M&A, reputation management, data protection, IP and employment, and advising on ESG issues. Punam lives by the principle that good legal advice is commercial, pragmatic, and strategic, and partners with the business to achieve its objectives. She is passionate about the environment and social equity, and is a Co-Opted Governor for a primary school in Hackney (London). In her spare time, she enjoys creative writing, cooking, interior design, nature and skiing!  

With 10 years of experience as a Chartered Fellow CIPD, Jehona has a wealth of knowledge in managing various HR functions. Her previous role at a prominent private aviation firm as well as 3 years at Longevity Partners has allowed her to oversee HR operations across the UK, Europe & US. Jehona’s expertise lies in recruitment & selection, performance management, learning & development, succession planning, compensation and benefits, as well as HR data and analytics. 

Organizations stems from the interconnectedness of core functions and the emphasis on employee well-being. Jehona’s inspirational HR quote is, “Empowering employees leads to empowered organizations.” In her free time, she juggles her property organization company, indulges in long bike rides, participates in HR roundtables, and embraces the joy in every moment of life.

Emma joined Longevity Partners in 2022 as a senior consultant in the Austin office, where she led ESG strategy and ESG reporting projects. Most recently, she became the Managing Director of the US and oversees all US projects, supporting a team of over thirty consultants. She previously worked as a Senior Energy Consultant for SunPower managing PV implementation projects across the US. Additionally, she has experience at a financial services consulting firm, where she assisted with the development and support of portfolio-wide strategies and project management of prominent private equity clients. 

Caitriona Hunter joined Longevity Partners in London as Managing Director UK following a 25-year tenure as an Investment Manager at CBRE IM. She has extensive experience in real estate fund management, fund structuring, capital raising and asset management.

Caitriona is passionate about the ESG impact of real estate assets from an environmental and social impact perspective. She believes that real estate must address its impact on the environment and that quantifying and understanding what is needed will act as a catalyst for change.

Having been active in the field of sustainable urban development since 2012, Roger joined Longevity Partners as Managing Director for the Netherlands. He has a bachelor’s degree in Regional Development and Innovation and a master’s degree in Sustainable Development – Environmental Governance.

Roger joined Longevity Partners from OPPS, where he worked as a public procurement consultant on integrated contracts (DBFMO) for sustainable & healthy buildings, and previously worked at TNO (The Netherlands Organization for Applied Scientific Research) on low-carbon climate resilient cities. Roger has as a strong motivation to accelerate the transition towards sustainable cities through strategic advice, benchmarking and by connecting people, initiatives and innovations.

In addition to his work in sustainability, Roger is a board member of Stichting Flor Ayuda, a Dutch charitable foundation for deprived children in Guatemala. Roger is a tennis player, coffee drinker, a movie enthusiast and has a passion for photography.

Amedeo has been an integral part of Longevity Partners for over four years. Having joined the firm as an analyst in early 2019, he then joined the Business Development team in 2021 and is now the Managing Director of Longevity Partners Southern Europe. He has a master’s degree in Environment and Development from King’s College London and brings a wealth of experience gained as Project Analyst with the UN Global Compact. Amedeo is currently responsible for managing the growth and ongoing development of Longevity’s operations in Southern Europe. This includes oversight of the region’s delivery, strengthening relationships with existing clients, and growing the local network.

Kemmu Kawai joined Longevity Partners Japan in September 2022 as the Country Director. Based in Tokyo, he oversees all operations and activities in Japan, the Asia-Pacific region and beyond. He brings him more than 16 years of experience in finance where he specialised in real estate and credit investments. Before joining Longevity Partners, he served as a Senior Portfolio Manager at Norinchukin Bank and as Investment Manager at Center Point Development. He holds a Bachelor of Commerce majoring Accounting and Finance from The University of Sydney.

Onur Aydin joined Longevity Partners as Managing Director Germany, after spending six years as Head of Asset Management Infrastructure and Areas at Munich Airport.

With extensive expertise in strategic real estate development and a robust academic background in management, sustainability and architecture, he leads Longevity Partners Germany, in Munich. Onur oversees strategic initiatives, provides compliance management support, and delivers sustainable value-adding solutions tailored to the unique needs of the German infrastructure and real estate investment markets.

Anthony joined Longevity in 2017, having worked previously for JLL’s Upstream team, focusing on sustainability solutions within the commercial real estate sector. Since joining Longevity, he has helped to build out its core services around onsite and offsite renewable energy and electric vehicle charging deployment, and has successfully overseen the installation of numerous projects. Anthony passionately believes that the clean energy transition should be viewed as an opportunity and as Director of Longevity Power, his role is to find solutions to ensure that real estate investors and commercial occupiers are able to fully realize the potential of this opportunity.

Anthony holds an M.Sc. in Environmental Technology from Imperial College, London and a Bachelor’s degree in Geography from University College London.

Carolin Meier joined Longevity Partners in December 2021. As Associate Director – ESG Strategy she leads the firm’s strategy services, globally. She and her team advise on ESG strategies and implementation, science-based net-zero roadmaps and social value across the real estate and infrastructure landscape.

With seven years’ experience as an architect, she is an expert in the design, development and construction quality management of large, complex projects. She delivered two of the most striking building projects in Switzerland for the world-renowned, Pritzker-Prize winning architecture firm Herzog & de Meuron.

With a Bachelor and Master degree in Architecture, she has been inspired by and driving forward an architecture approach centered around sociology, phenomenology, psychology, environmental impact and accountability regarding every aspect of development and realization of the built environment. During her educational and professional path, she has gained valuable experience with implementing sustainable solutions as well as the efficiency and accuracy of project processes incorporating tools such as building information modeling, parametric design, and digital- and pre-fabrication.

Carolin’s insatiable curiosity about nature, climate, sociology and psychology brings forth her concern for environmental and human health that make her strive for the development of sustainable and resilient buildings and cities filtered towards a human scale.

Stan joined our London office as Director – Building Optimisation and Sustainable Design. With over 18 years of experience in operations and a strong background in sustainability, low carbon MEP, energy efficiency, and renewable energy, Stan brings a wealth of expertise to our company. Stan will take a leading role, collaborating with clients across sectors and geographies to achieve their carbon reduction targets and enhance sustainability performance.

Eric joined Longevity Partners in May 2020. He is an electronics engineer with a technical background in the energy sector. He oversaw all green building certifications for Iberia in 2022 and the first half of 2023, before being appointed as the global business unit lead for existing building certifications.

Olivia joined Longevity Partners as a Sustainability Analyst in 2018. During this time, she has gained extensive experience across the services of strategy, secondments and certifications before developing our Climate Resilience service line in 2020.  She continues to lead this service line alongside conducting her third part-time secondment, managing all global instructions to assist clients in identifying, quantifying and mitigating projected climate-related risks at all levels.

She has an MA (Hons) in French and Geography from the University of St Andrews, during which time she focused predominantly on climate change science and policy. Prior to joining Longevity Partners, she worked on sustainable livelihood development in rural Nicaragua and at the United Nations Environment Programme (Geneva) evaluating their international projects while focusing on stakeholder engagement.

Stefano Capacci is our Business Unit Lead for Sustainable Finance, servicing clients with green loans & bonds, responsible investment strategies, and ESG portfolio integration. Stefano joined Longevity Partners in 2021, following previous work experience in NGO management and consulting. Stefano’s goal is to create a positive environmental impact through ESG advisory.

Jillian joined Longevity Partners in 2022 as a Policy Analyst. She graduated from the London School of Economics and Political Science with an MSc in International Political Economy with a focus on national net zero carbon targets. She has developed expertise in global policies focused on ESG and sustainability and is experienced in project management, ESG strategy implementation, and policy analysis.

Ted joined Longevity Partners as a business development associate in 2022 after leaving the United Nations. He also worked as a consultant in the natural resource sector for a confidential client where he provided strategic guidance, compliance reporting, and ongoing management of biological systems with an emphasis on the sustainability of natural resources.

Laure Ferrand joined Longevity Partners in early 2020 as a senior energy and sustainability consultant, bringing with her years of experience in energy performance contracts for a major CAC40 company. Laure took over the management of Longevity’s French office in 2021 before being appointed as Associate Director, Head of Longevity Transaction Services, in 2023.

With a Master’s degree in engineering and an MBA, Laure has acquired the skills to lead large-scale energy projects. Laure also pursued a 3-year entrepreneurial journey before joining Longevity, adding to her business and strategic thinking skills.

Laure is an advocate of ‘business doing good’ and an innovation supporter.

Agathe joined Longevity Partners as a Senior Policy Consultant in 2021. She previously worked at the Climate Group and the European Climate Foundation, where she developed strong expertise in climate and sustainability with a focus on policy analysis, resource mobilization and project management.

Si-Pan joined Longevity Partners in early 2023, bringing over a decade of experience in the technology sector, where he has managed various IT functions. His previous role at a real estate investment management firm, combined with his work at Longevity Partners, has enabled him to lead impactful projects that drive digital transformation and optimize operations. He is committed to ensuring the security and efficiency of IT systems while seamlessly bridging technology with business objectives.

Roger Baumann joined Longevity in 2019 as a non-executive Director and Chair of the Remuneration Committee. Roger Baumann brings 20 years of business experience in Real Estate, Consulting, Product Development, IT, Finance, Sustainability and Operations. His most recent position was as COO & Head of Sustainability Global Real Estate for Credit Suisse Asset Management in Zürich, Switzerland and as Managing Director for the Credit Suisse German entity, Credit Suisse Asset Management KAG, based in Frankfurt. He has just joined Zurich Insurance Group Ltd. as COO & Head Product Development Global Real Estate based in Zürich effective September 30, 2019. Roger has a Civil Engineering Degree from ETH Zürich and holds an international MBA from the State University of New York. In addition, he is a Member of the Royal Institution of Chartered Surveyors (MRICS) and a member of the European Investment Committee of the EU-funded research project CRREM (Carbon Risk Real Estate monitor).

Clémence has a MSG from the University Dauphine Paris, and a Masters in International Project Management from the ESCP. 

She has developed a career open to the world and cultures; the 2 years she spent in China between 2002 and 2005 allowed her to discover the inherent structural link between urban and societal revolution, on a large scale, already supporting the agency on the development of local projects: the renovation of the Qianmen district in Beijing, and the extension of the city of Pingyao. With her experience and real passion for research, technology and the emergence of new markets, she trained in Strategy Consulting at Capgemini Consulting before creating and developing an innovative urban logistics start-up, “WineSitting.”

In 2014, she decided to join the agency as Director of Development, to implement a development strategy focused on innovation and sustainable urban planning. She is implementing a project-based approach that directs the culture of the family-owned, century-old agency towards the future. Very involved in the development of biomimetic innovation alongside the CEEBIOS, within which she co-founded the Biomim’City Lab, as well as in various works related to the city’s climate issues, Clémence is developing numerous new projects, all inspired by nature.

This commitment for sustainable cities has led her to become a partner of the Société Française d’Urbanisme. Clémence won the “Choiseul City of Tomorrow” ranking, promotions 2019 and 2020, as well as a director of Real Estech and member of the Mission Committees of the Frey group and of the ELAN company.

Clémence loves writing, inventing stories and poems. She is married and the mother of 2 children, with whom she conducts a whole lot of experiments to satisfy her thirst for science.

Yvon joined Longevity Partners as a member of the board of directors in 2021. Considered to be one of the most eminent lawyers in environmental law in France, he was notably named Chevalier de l’Ordre National du Mérite in 2006. He is a former vice-president of the order and former member of the council of the Paris Bar Association. Yvon Martinet has solid experience in real estate law and industrial environment law, both nationally and internationally. Since 2003, he has been an expert at the French Institute of International Legal Experts (I.F.E.J.I) in environmental, natural resources and food law.

David Cropper worked with TMG Partners for 22 years where he served as Director of Development and was a member of both the Executive Management team and the Investment Committee.

He has 37 years of experience in real estate development including project design, entitlement, construction and finance.

He has been a partner in more than 20 million square feet of development projects and at TMG was responsible for The Crossing | San Bruno, an award-winning $250 million dollar mixed-use transit-oriented development, as well as 650 Townsend, a large mixed-use office and retail project in San Francisco and most recently led the acquisition and redevelopment of Champion Station, a 810,000 square foot rehabilitation of Cisco Systems’ former headquarters.

David’s career began in commercial real estate finance at Union Bank and Comerica Bank where he oversaw Comerica’s real estate lending practice throughout the west.

He is involved with NAIOP, Habitat for Humanity and serves as Chair of the Sustainable Development Council of the Urban Land Institute.

David has a B.A. degree in English Literature and Religious Studies from Occidental College.

Tamar Dane Dor-Ner is a partner at Bain & Company. She has been with the firm since 1999 and has worked in the New York, San Francisco and Stockholm offices of the firm. Currently, she is the managing partner of the firm’s Boston office, overseeing all local firm activity. She is also a member of the firm’s Board of Directors and the chair of the Risk Committee.

More than a decade ago, Tamar founded Bain’s Brand Positioning & Strategy group and has long served as a leading member of our Private Equity, Retail and Customer Strategy & Marketing practices.

In addition to brand strategy, Tamar has led hundreds of diligence efforts, focusing on Retail and Consumer Products and typically evaluating brand strength, strategy and resilience. She previously led our PE retail investing in the Americas.

She has also led multiple engagements supporting corporate retail clients through transformative Mergers and Acquisitions, from diligence to integration and synergy capture.

Beyond transactions, Tamar’s corporate retail work has been underpinned by the generation of new-to-world customer insights and their profitable application in brand strategy, product and category management, pricing and merchandising. Her core clients have spanned grocery, club, drug and mass retail, as well as the restaurant and apparel sectors.

Tamar graduated with master’s and bachelor’s degrees, magna cum laude, from Northwestern University. While there, she was named a Weinberg and James Alton James Scholar. She serves on the Boston Preparatory Charter School Foundation board and the board of Cradles to Crayons.

She lives in Boston with her husband Dan and two sons, Felix and Gideon.