Karthik Iyer is a sustainable finance and capital markets advisor with over 30 years of experience in green finance, banking and asset management. His expertise covers blue bonds, sustainable investing, climate finance, ESG advisory and green capital markets.
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About me
Karthik Iyer is a sustainable finance and capital markets professional with over 30 years of international experience across banking, asset management, investment markets and sustainability advisory.
He currently serves as Director of Market Engagement and Partnerships at the Blue Bond Accelerator and works as an independent sustainable finance advisor. His professional experience includes advisory engagements with the Asian Development Bank and Climate Bonds Initiative, supporting sustainable finance development, market engagement and the mobilisation of capital for environmental and sustainability objectives.
Previously, Karthik held senior positions with Climate Bonds Initiative, Dalberg and Agvesto, advising financial institutions, development banks and businesses on green finance, sustainable investment strategies and access to capital. His work has included public and private sector partnerships, sustainable finance advisory, capacity building and the development of financial solutions to support sustainability objectives.
Earlier in his career, he held leadership positions in international banking, asset management and financial services, including roles with Commonwealth Bank of Australia, Colonial First State and Capita Financial Administrators.
His experience supports his review of OneStop ESG content covering sustainable finance, ESG investing, green and blue bonds, sustainability consulting, sustainable capital markets, climate finance and investment opportunities in the low-carbon and blue economies.
Career and credentials
Professional background
Blue Bond Accelerator | Director, Market Engagement & Partnerships | June 2023–Present
Leads market engagement and partnerships for the Blue Bond Accelerator, drawing on his experience in sustainable finance, financial markets and stakeholder engagement.
Independent Sustainable Finance Consultant | ADB & Climate Bonds Initiative | July 2019–Present
Undertakes independent advisory assignments, including work as a consultant to the Asian Development Bank (ADB) and Principal Advisor to Climate Bonds Initiative, as listed in his professional profile.
Agvesto | Director, Sustainability Practice | 2023–January 2026
Advised corporates, financial institutions and development banks on sustainability strategies, access to green finance and capacity-building initiatives. His work included supporting organisations in identifying financing options and developing practical approaches to their sustainability objectives.
Dalberg | Senior Expert, Sustainable Finance | March 2021–March 2022
Provided advisory services to public and private sector organisations, civil society institutions and development finance institutions on climate finance strategies, implementation and technical assistance.
Climate Bonds Initiative | Commercial Director | March 2018–July 2019
Oversaw global commercial activities, public and private sector partnerships and initiatives promoting green finance and sustainable capital markets.
ac28 Ltd. | Owner & Director, Commercial Advisor | November 2010–July 2019
Provided advisory services in international business, financial services, investment policy and capital markets. His work included strategy development, business transformation, product development and large-scale programme management.
Capita Financial Administrators (Gibraltar) Ltd. | Managing Director | November 2006–November 2010
Led business operations and commercial management for a financial services unit supporting alternative investment funds and international clients.
Commonwealth Bank of Australia, Colonial First State & First State Investments | Programme and Project Management | 1998–2006
Held programme and project management positions covering investment management operations, financial services transformation and strategic initiatives.
Stock Holding Corporation of India | Client Services Manager | May 1992–June 1995
Managed relationships with financial institutions and mutual funds and participated in initiatives relating to securities settlement automation and dematerialisation.
Education · 1996
MBA, International Business
Western Sydney UniversityEducation · 2006
Diploma in Financial Markets
FINSIA, Securities Institute of AustraliaEducation · 1991
Bachelor of Commerce, Banking
Osmania University
How we review our guides
OneStop ESG guides are reviewed by specialists with relevant professional experience in the subjects they assess.
Our reviewers examine:
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The accuracy of technical descriptions and material provider claims.
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The reliability of supporting evidence and regulatory references.
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The appropriateness of comparisons, strengths, limitations and recommendations.
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The disclosure of relevant commercial relationships.
Reviewers must disclose material conflicts of interest and cannot approve guides involving providers with which they have a conflicting relationship.
A review credit is published only after the named reviewer has completed and approved the assessment.
Learn more about how we produce and review guides.
Guides reviewed by Karthik Iyer
Top Environmental Consulting Firms in 2026
This article is a comprehensive buyer's guide ranking the best environmental consulting firms in 2026, covering global integrators like AECOM, WSP, and Jacobs alongside specialist players in PFAS remediation, ESG advisory, and climate resilience.
Best ESG Reporting Software Platforms in 2026
Top ESG Reporting Software in 2026