Executive Director, Environment & Health

As a member of the senior executive team Mrs. Mette S. Lassesen heads up strategy, business planning, and market development within Ramboll Environment & Health – Ramboll’s largest business unit with 2500 employees around the World. She works with and leads mergers & acquisitions – both in the early phases and throughout the post-merger integration phase. Ms. Lassesen is also in charge of Ramboll’s global division for impact assessment, working with projects and clients around the World. As responsible for the global market organization within Ramboll’s Environmental Business, she oversees the work with Key Clients, Global Sectors and the six global Services Lines of the business. She leads Ramboll Environment & Health’s strategic and market-oriented focus on Sustainability, including the develpment of new service offerings, and strategic partnerships, including with the United Nations Global Compact. Ms. Lassesen is the executive sponsor of a business wide push for diversity and inclusion, and is mentoring several colleagues within and outside Ramboll. She continues to provide thoughtleadership on issues related to urban development and resilience, and she is a frequent speaker and moderator at conferences and forums in Denmark and abroad.


2018-present: Market Director, Executive Team, Environment & Health, Copenhagen, Denmark

2016-2018: Market Director, Synergies and Liveable Cities
Ramboll Environ, Washington DC, USA

2014-2016: Group Director, Market Development, Ramboll Group, Washington DC, USA

2008-2014: Group Director, Markets, Knowledge Management and Innovation, Ramboll Group, Copenhagen, Denmark

2000-2008: Business Manager, Rambøll Management, Managing Department for International Development Consulting, Copenhagen and Brussels

1998-1999: Legal Adviser on citizenship, UNHCR Ukraine/ Crimea

1997-2000: Legal Consultant and Project Manager, Danish Refugee Council, Copenhagen, Denmark

1996-1997: Repatriation/protection Monitor, UNHCR Liberia


Master of Law
University of Copenhagen

Danish, English, German, French, Swedish, Russian


Mette Søs Lassesen
+45 5161 6049/ + 1 202 304 3281
Hannemanns Allé 53
2300 Copenhagen S

Speaking at the Following:

Feb 1

Monday, February 1, 2021

Creative Placemaking Forum

1:00 pm – 3:00 pm

13:00   Welcome             Lisette van Doorn, Chief Executive, ULI Europe   13:05  Presentation of Danish White Paper: key findings            Mette Søs Lassesen, Executive Director, Ramboll            Kristian Riis, Partner Volcano & CEO, NordicLA   13:25   Case Study Presentations            Moderator: Juanita Hardy, Managing Principal, Tiger Management Consulting Group            Wembley Park […]