Roser Preuss


Roser is a Consultant in the Sustainable Commodities team at 3Keel. Her work combines research, data analysis and project management to deliver insights for clients considering complex environmental and social issues in their supply chains. She is currently focussed on cocoa and the Retailer’s Cocoa Collaboration.

Roser has a background in supply chain, tech and data. She worked in supply chain strategy at Sainsbury’s, leading projects to find inefficiencies, trial solutions and deliver cost savings. Roser then worked at Palantir, a software company specialising in big data analytics. She worked on projects with government clients to trial, roll out and scale software solutions, closely working with end users to understand and improve their workflows.

In 2020/2021 Roser took part in the On Purpose Associate programme, a year long career changing programme for the social and environmental impact space. This included two six month placements at purpose-led organisations, mentoring, coaching and training. During one of her placements she worked as Sustainability Manager at Cotswold Fayre and developed the environmental strategy for the suppliers. Before joining 3Keel, Roser worked as a freelance sustainability consultant, completing carbon footprints and B Corp consulting for corporate businesses.

Roser has an MSci in Mathematics (First Class) from Imperial College London and an MSc Management (Distinction) from the London School of Economics.