OUR TEAM

For 25 years, Thomas has served in senior leadership positions in North Asia, South East Asia and Europe, for large multinational companies, including as Regional Managing Director – Asia for Rexam PLC.

When he retired from corporate life, Thomas was President and Country Manager for ABB in the Philippines. He then embarked on a social entrepreneurship journey, serving on the boards of a number of foundations, before setting up Genashtim as a for-profit social enterprise.

Thomas is one of UNESCAP’s seven “Promoters” for the new Asia and Pacific Decade of Persons with Disabilities, 2013–2022. He has been invited as a speaker by ILO, AVPN Conference, World Blind Union, ICEVI, Asia Pacific Centre for Disability, The Nippon Foundation, and various universities including Sydney University, and Asian Institute of Management.

Since 1999, Thomas has been an active member of YPO/WPO, serving in many leadership positions, and was elected as Chairman for WPO in South East Asia for 2010–2012, during which time he was honoured with the Best of the Best Region award in WPO.

Thomas lives with his family in Melbourne, Australia and travels two-thirds of the time.

Likes: food and cooking, technology, people who care

Tan Ee Beng heads the ESG Services in Genashtim and he manages various ESG initiatives and projects with our partners and clients. Since 2020, he has been involved in promoting and advocating the B Corp movement in Singapore and Malaysia and which has now extended to the rest of Southeast Asia.

Despite his partial blindness, Ee Beng makes the most of any opportunity that comes his way. Based in Malaysia, Ee Beng first obtained a diploma in Mass Communication with a major in Public Relations and later pursued a Bachelor of Public Relations (Honours) degree from the Tunku Abdul Rahman University College in Kuala Lumpur. He interned at the International Association for Human Values (IAHV) and started work as a Project Coordinator for Dialogue in the Dark.

With over 20 years of business development experience across the Asia-Pacific region, Leslie brings deep expertise in FMCG, consulting, and professional education, particularly in the accounting and finance sectors across South Asia, Southeast Asia, and Africa. His collaborations include working with CFA Institute, AICPA, CPA Australia, and major banks to drive professional development.

A Certified ISO 14064 GHG Lead Verifier and GRI-trained Professional and Associate Member of CPA Australia, he was awarded the Singapore Prime Minister's Community Initiatives Award in 2015 for his impactful grassroots contributions. And he is a trained ESG verification analyst.

Likes: hiking, whiskey, volunteering

With over 36 years of consulting experience, Carol began her career with Ernst & Young before joining a Malaysian government innovation agency, where she helped establish its first Design Thinking school. Her portfolio spans complex project and change management, transformation initiatives, and strategic consulting across public and private sectors.

A certified Exponential Organizations (ExO) Ambassador, Consultant, and Sprint Coach, Carol is also an active member of the global OpenExO ecosystem, enabling her to drive sustainable transformation through a worldwide network of advisors and industry leaders.

Likes: travelling, gym, pickleball

With more than 40 years of experience as a consultant, entrepreneur, and industry leader, Seong co-founded The Vision Group of Companies and shaped Malaysia's creative content industry for over three decades. He began his career at SGV Kassim Chan and later transitioned to guiding others through advisory, coaching, and ecosystem-building. His current work spans mentoring startup founders, life coaching, supporting the Soonicorn Collective, promoting sustainability within YPO, and launching The Better Business School—an executive education platform grounded in purposeful leadership.

Likes: Cycling

Trang is a meticulous and highly skilled finance professional with over 20 years of experience managing financial operations for global businesses. Her career spans multiple industries and regions, with a focus on optimizing financial systems, streamlining operations, and providing strategic financial guidance in dynamic environments. Trang has successfully led teams in complex, multi-entity organizations, driving significant improvements in financial reporting, process optimization, and compliance. With a strong international finance background, she has overseen financial functions for companies (including listed) across Asia, Australia, Europe and U.S. Her core areas of expertise include:

• Cross-Regional Financial Management & Compliance
• Financial Systems Optimization & Process Improvement
• Budgeting, Forecasting, Cash Flow Management & Business Planning
• Audit Management, Tax & Regulatory Compliance

Trang’s approach focuses on driving financial performance and long-term business success by implementing effective financial strategies, ensuring compliance, and continuously optimizing operations.

Marcus Wei is a finance and investment consultant with 17+ years of experience in driving strategic investment decisions and optimizing portfolio performance. Having managed global multi-asset portfolios exceeding S$250M for two single-family offices, Marcus has deep expertise across equities, fixed income, real estate, and PE/VC funds. His extensive track record spans end-to-end buy-side M&A transactions in ASEAN and MENA regions, covering deal origination, assessment, structuring, financial modelling, negotiation, and post-merger integration.

Marcus adopts a data-driven and results-oriented approach that integrates robust risk management and sustainable growth strategies to help clients create long-term values. His tailored consulting services include:

• Investment Strategy & Portfolio Management
• Corporate Finance & M&A Advisory
• Financial Modelling
• Sustainability & ESG Investing 

Marcus holds a Master of Science in Applied Finance from Singapore Management University and is a Chartered Financial Analyst (CFA) and Certified Management Accountant (CMA) charter holder.

Yolyn Sam is a seasoned strategic marketing leader and founder of Fractional Marketer, helping startups, SMEs, and associations build predictable growth through clear strategy, strong positioning, and practical execution. With over 20 years of experience across APAC and global markets, Yolyn specialises in designing and executing technology driven marketing strategies without the overhead of full time hires.

Yolyn has built and scaled marketing functions from the ground up across B2B SaaS, technology, education, and professional services. Her work spans go to market strategy, demand generation, content and brand development, and marketing automation, delivering measurable outcomes such as multi fold lead growth, improved conversion rates, and stronger pipeline contribution. She is known for translating complex business goals into clear, execution ready marketing roadmaps.

As a Fractional CMO and trusted advisor, Yolyn partners closely with founders and leadership teams to align marketing with business objectives, optimise systems and processes, and ensure teams focus on what drives results. Her approach blends strategic clarity with hands on delivery, leveraging platforms such as HubSpot, Salesforce, Marketo, and LinkedIn to build scalable and sustainable growth engines.

• Go To Market Strategy & Positioning
• Demand Generation & Funnel Optimisation
• Marketing Automation & CRM Implementation
• Content Strategy & Brand Storytelling

Yolyn’s approach is pragmatic, results focused, and deeply aligned with business outcomes. She believes effective marketing is not about doing more, but about doing the right things consistently, with clear metrics, strong foundations, and execution that teams can sustain.

With over 12 years of experience spanning financial audit, corporate tax, fintech advisory and sustainability, Yi Yung brings an interdisciplinary approach to climate and nature-related risk assessments and disclosures. His current scope focuses on ISO 14064 GHG emissions reporting, ISO 14040 and ISO 14044 life cycle assessments (LCA), IFRS S1 & S2 implementation, TNFD-aligned nature disclosures and sustainability assurance (ISSA 5000).

Yi Yung is a certified ISO 14064 Lead Verifier and ISCA Sustainability Assurance Professional, as well as a Nature-based Solutions (NbS) Initiative International Scholar (University of Oxford) and a Global South Innovator Fellow with OnePointFive Academy (US). He is also a Chartered Accountant of Singapore and an Accredited Tax Advisor.

• Sustainability Assurance
• Climate and nature reporting
• Life cycle assessment
• FinTech and tax advisory

With financial and sustainability audit rigour, Yi Yung’s approach to sustainability implementation goes well beyond regulatory compliance. He is known for being highly methodical and detail-oriented, working closely with clients to translate frameworks into practical, right-sized implementation plans that deliver real business value.

Andrei Veksha has over a decade of experience in climate change mitigation, circular economy, and waste management innovation. Recognised globally as a Top 2% Scientist in environmental science and energy (Stanford/Elsevier, 2022–2024), he combines technical knowledge with industrial leadership.

As Director of Nanomatics Pte Ltd, Andrei managed operations of a plastic waste recycling plant, securing funding from distinguished organisations such as Temasek Foundation and Enterprise Singapore. His leadership has been validated through multiple industry awards, notably Startup of the Year at the Asian Downstream Summit 2023. Alongside his entrepreneurial ventures, Andrei serves as a Senior Research Fellow at Nanyang Technological University, Singapore, and has contributed to multi-million-dollar research projects and published over 100 peer-reviewed papers on waste valorisation, hydrogen, and carbon capture technologies.

He also advises companies on ESG strategy and greenhouse gas reporting, leveraging certifications in ISO 14064 greenhouse gas frameworks, ISSB sustainability reporting, and zero‑waste management.

• Circular economy planning
• Waste-to-resource innovation
• Carbon accounting and sustainability reporting
• Decarbonization strategies

With a PhD in Environmental Science and extensive cross‑sector experience, Andrei offers clients pathways to reduce emissions, optimise resource recovery, and adopt innovative technologies for sustainable growth.

Kali Gibson is a global impact governance and strategy specialist with over a decade of experience strengthening social and environmental performance systems. As former Co-Director of Certification & Verification at B Lab Global, she led global certification integrity frameworks and quality assurance mechanisms supporting companies pursuing B Corp Certification across diverse markets.

Kali contributes board-level expertise in strategy design, impact measurement architecture, and standards oversight. Her work focuses on embedding accountability into organisational strategy and strengthening certification ecosystems that uphold transparency, rigour, and long-term stakeholder value. She also serves on the Board of Directors of Bethlehem Co-op Market, advancing responsible and community-centred economic models.

Kali holds a Master’s in Social Business & Microfinance from Glasgow Caledonian University and a BA in Economic Development from Eastern University.

Claudia Díaz Forde is a certification ecosystem and partnerships strategist with experience advancing responsible business standards across international markets. She previously served as Senior Partnerships Manager, Certification & Verification at B Lab Global, where she collaborated with more than 75 analysts worldwide to support the integrity, consistency, and scalability of B Corp certification.

Her expertise spans stakeholder engagement, strengthening certification systems, and operationalising measurable social and environmental performance frameworks. Claudia brings cross-sector insight across the social, public, and private domains, supporting organisations in aligning impact ambition with credible verification pathways.

She graduated from Washington University in St. Louis, majoring in Marketing and Healthcare Management with a minor in Global Health & the Environment.

Experience finance professional with a strong track record in regional performance management, data-driven decision support, and stakeholder advisory.

Mei Yee is a Chartered Accountant (CPA Australia) with sustainability training in carbon accounting, GHG management, and sustainability reporting through the United Nations Global Compact Network Singapore. She advises organizations on sustainability strategy, decarbonization initiatives, and ESG transformation, by integrating financial and environmental perspectives.

• Climate and nature reporting
• Sustainability assurance
• KPI framework design
• Automation & system implementation

Mei Yee brings an interdisciplinary approach to climate and nature-related risk assessments and disclosures. Her current scope in sustainability focuses on ISO 14064 GHG emissions reporting and IFRS S1 & S2 implementation.