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Secretariat

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The Secretariat, also known as the RSB Team, is responsible for the day-to-day management of RSB activities. It ensures the ongoing development of RSB’s sustainability framework, as well as its promotion and implementation through certification and policy.

RSB is headquartered at the International Environment House 2 in Geneva, Switzerland, with staff from five continents.

Meet the team below.

Julia Fidler

Executive Director

Julia Fidler is the Executive Director of the Roundtable on Sustainable Biomaterials (RSB), leading the organisation’s mission to drive credible, collaborative solutions for a just and sustainable bioeconomy. She brings over 30 years of international experience including corporate sustainability, supply chain decarbonisation and climate innovation. Prior to joining RSB, Julia was the Director of Market […]

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Elena Schmidt

Senior Strategic Advisor

Elena Schmidt is RSB’s Senior Strategic Advisor. She joined RSB in 2015, initially serving as Standards Director, and later served as Executive Director from 2021 to 2025. In her current role, Elena continues to support the organisation’s strategic direction and leadership transition, focusing on high-impact partnerships, programme development and long-term organisational evolution. During her time […]

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Hannah Walker

Deputy Executive Director

 Hannah Walker is Deputy Executive Director at the Roundtable on Sustainable Biomaterials (RSB), where she supports organisational leadership and drives global engagement across industry, government, civil society, and academia. She leads RSB’s outreach, communications, and marketing, and is responsible for building and activating strategic partnerships, growing the organisation’s membership community, and designing high-impact global events. […]

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Amparo Arellano

Standards & Certification Director

Amparo Arellano is RSB’s Standards & Certifications Director, where she leads the Sustainability Foundations team. She is responsible for the development and strengthening of the RSB sustainability certification framework, ensuring that RSB provides stakeholders with a robust and credible certification framework that drives tangible positive impacts across various industries. Amparo is passionate about sustainability and […]

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Arianna Baldo

Senior Director of Programmes

Arianna Baldo is RSB’s Senior Director of Programs and leads the design and implementation of RSB’s programmes. These include R&D and landscape-level projects, corporate partnerships, and initiatives such as book and claim, all aimed at advancing a just and sustainable transition to a bio-based and circular economy in hard-to-abate sectors like aviation, shipping, and materials. […]

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Alex Ehrenhaus

Projects Director

Alex is RSB’s Projects Director, working closely with the Executive Director and the wider Leadership Team to review and design strategies, goals and milestones that are instrumental to developing RSB’s Advisory Services. Alex first joined RSB as our Sustainable Feedstock Expert, and was then promoted to the Leadership Team as Projects Director, starting January 2024. […]

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Gill Alker

Book & Claim Technical Expert

Gill is RSB’s Book & Claim Manager and is responsible for the implementation and expansion of RSB’s innovative book and claim programme, which aims to expand the outreach of sustainable biomaterials and accelerate the decarbonisation of hard-to-abate sectors, such as shipping and aviation. With over two decades of experience, Gill has been actively involved in […]

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Pablo Barrios

Legal Manager

Pablo Barrios is RSB’s Legal Manager, bringing over four years of experience in corporate law and management across diverse international environments. He specialises in international trade, compliance, risk management, and data protection, offering critical support in legal and risk management activities within the organisation. Based in Spain, Pablo holds a master’s degree in International Trade […]

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Frederico Blanco

Certification Manager

Frederico Blanco Scheinpflug is RSB’s Certification Manager. He works closely with RSB’s Certification Lead to maintain and grow the RSB certification system through certification management, oversight, and accreditation management support for operators and certification bodies. Frederico completed his mechanical engineering degree at the Federal University of Rio Grande do Sul, followed by a specialisation in […]

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Natalia Bonilla

Sustainability Manager

Natalia is one of RSB’s Sustainability Managers in the Advisory Services team. She holds a degree in Environmental Engineering (TEC, Costa Rica) and an MSc in Sustainability, specialising in Industrial and Urban Ecology (UAB, Barcelona). With seven years of experience across Europe and Latin America, she has managed projects in Life Cycle Assessment (LCA), Carbon […]

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Niamh Byrne

Marketing & Communications Manager – Content and Digital

Niamh Byrne is RSB’s Marketing & Communications Manager – Content and Digital. She brings sharp writing skills, digital agility, and a strong instinct for compelling content. In her role, she leads the creation and delivery of engaging, mission-driven content across RSB’s digital platforms. Her focus is on amplifying RSB’S voice globally and translating complex sustainability […]

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Vitor Bermudes

HR & Admin Manager

Vitor is RSB’s HR & Admin Manager. He is a passionate and seasoned HR professional with an MBA and a Master’s degree in Human Resources Management. Vitor brings over a decade of experience in talent acquisition, retention strategies, performance management, and HR technology implementation – with a focus on driving organisational success and fostering positive […]

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