Charlotte Drache-Lambert

Director of Programs and Customer Engagement

Charlotte has spent the last ten years driving business impact internationally in leading companies across various areas of the built environment. As the Director of Programs and Customer Engagement, she is committed to accelerating the carbon transition and contributes her diverse commercial and managerial experience to support clients in the decarbonization of their buildings and portfolios.

Prior to joining OPEN Technologies, Charlotte was a founding member of WeWork’s Enterprise Services team in Paris, France, where she drove strategic sales opportunities in commercial real estate and advised clients throughout Europe. Her previous experience as Head of Marketing in residential real estate development in Berlin, Germany, is complemented by design and strategy work on various urbanism and landscape projects in Shanghai, China, and Toronto. 

Charlotte holds an Honors Bachelor of Arts with distinction from the University of Toronto, a Master in Landscape Architecture from the University of British Columbia and is currently completing a part-time MBA at UCL (University College London).  

In her free time, she loves exploring galleries and museums, enjoying a meal that looks too good to eat, or being in the mountains skiing and hiking. 


Our team has decades of experience in green building innovation, software development, and business development.

With executive and management level experience in policy-making, real estate development, property management, architecture, energy modelling, product management, and business management, we have a holistic understanding of the building sector and the leverage points to create positive change.

OPEN Technologies grew out of the OPEN Green Building Society, a non-profit organization that has been developing open source software tools for the green building space since 2013. Today, OPEN Technologies and OPEN Green Building Society are affiliated organizations with a shared goal: to use data to shape a regenerative future for our cities.

Andrew Shopland

Software Developer

Charlotte Drache-Lambert

Director of Programs and Customer Engagement

Christian Cianfrone

Co-founder and Chief Decarbonization Officer

Daniel Eden

GRID Product Manager

Dave Ramslie

Co-founder and Chief Operating Officer

Donovan Woollard

Co-founder and Chief Executive Officer

Eesmyal Santos-Brault

Co-founder, OPEN
CEO, Quantified Citizen

Gaurav Vijayvargia

Senior Software Developer - Custom Projects


Floor Manager

Guillaume Hammadi

Senior Software Developer

Johanna Fulda

Senior Software Developer

Justin Belanger

Software Developer

Justine Wiklo

Business Analyst

M’Beth Schoenfeld

Data Scientist

Maia Smith

UX Designer

Ryan McCuaig

Senior Advisor, Technology