About

At SEIN Consulting, we deliver specialised services within the fields of Environmental & Social Governance (ESG) and Circular Economy (CE). With a strong commitment to driving sustainable impact, we work across industries and geographies, providing practical insights for navigating today’s ESG and CE challenges.

Our story

With over 20 years of international consulting experience, our experts have developed deep expertise in ESG related analyses.

In the field of ESG Due Diligence, our experts have contributed to more than 200 DD assessments in a range of sectors against globally recognized standards and frameworks. Our experience supports financial institutions, project lenders, corporate and other organisational clients in assessing ESG risks, incl. resource efficiency and climate-related risks, identifying ESG opportunities and developing management plans, across diverse sectors.

In the field of Circular Economy, we have extensive experience in value chain and material flow analysis, helping our clients identify circularity and value creation opportunities at corporate, city, and national levels. Collaborations with leading academic institutions in the field of CE, such as the University of Exeter, have included innovative projects on various material flow and circularity studies, such as related to the role of CE in addressing demand for strategic materials, and leveraging data pooling networks for circular value creation.

In addition to direct client engagements, SEIN Consulting also collaborates with other leading consulting firms as a trusted sub-contractor, bringing specialized expertise and capacity to large-scale projects. SEIN Consulting is dedicated to achieving measurable impact for its clients, supporting sustainability goals, and unlocking economic opportunities through ESG integration and circular strategies. By combining robust analysis with actionable insights, SEIN Consulting empowers clients to transition toward sustainable, resource-efficient, and resilient business models.

Our story

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We stop
at nothing

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We love
to explore

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We keep
it simple

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We take it
step-by-step

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The people behind our success

Dean Mayster

social & ppc expert

Rebeca Swanstone

social & ppc expert

Timothy Powell

Creative Director

Jennie Ryan

Art Director

Susan Poore

Digital Consultant

Lisa R. Boone

PPC Ninja

Kiara Foster

Head of Content

Edward Smith

Strategy Dreamer

They believe in us

Hi, I am.. 

Stefán Einarsson

For over 20 years I’ve worked at the intersection of sustainability and business – helping clients managing Environmental & Social Governance (ESG) challenges and unlocking opportunities through Circular Economy thinking. Over the years, I’ve led or contributed to more than 200 ESG due diligence reviews across multiple sectors, advised on strategic environmental initiatives, and worked on cutting-edge Circular Economy research and analysis that supports both corporate transformation and policy development.

After working many years with leading sustainability consultancies, I founded SEIN Consulting to focus more selectively on the kinds of projects and partnerships that matter most – those that aim to make a real impact, challenge conventional thinking, and support the transition to a more circular, resource-smart economy. I wanted the freedom to work with teams who share that ambition, while building on my long-standing experience in  the sustainability field. 

What drives me is turning complex sustainability challenges into clear, evidence-based actions that make a real difference – for people, for businesses, and for the environment.

I either collaborate directly with clients on projects, bringing in other experts as needed, ensuring every project is supported by top-tier expertise and personalized guidance – or partner with other leading consulting firms as an independent expert.

Educational Background:

  • MBA in Innovation, Enterprise, and Circular Economy – Bradford University School of Business, UK
  • MSc in International Environmental Science – Lund University, Sweden
  • BSc in Biology – University of Iceland

Qualifications and Skills:

  • Skills and experiences across various disciplines, including natural science, business management, technology, sustainability, and data science.  Environmental impact assessments and due diligence in the context of sustainable finance. Expertise in internationally recognized ESG frameworks, including OECD Common Approaches, Equator Principles, and IFC Performance Standards, EBRD Performance Requirements, EIB E&S standards, EU sustainable finance directives, and others.
  • Proficiency in Circular Economy strategies, material flow analysis, resource efficiency assessments and modelling with focus on value chains and circular value capture potential.
  • Project management and team leader skills.
  • See more about my past work experiences on my LinkedIn

Selected co-authored reports and publications:

 

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