Our Expert Leaders & Advisors

Matthew Addison is a senior energy advisor and economist with over 30 years of global experience in energy policy, regulation, market restructuring, clean energy finance, and program evaluation. He has led transformative power-sector reforms, from unbundling utilities and modernizing regulations to harmonizing regional interconnection agreements and standardizing financing models. His work spans more than 40 countries across Africa, the Middle East, Asia, Europe, and the United States.

As Chief of Party for the $920 million Ukraine Energy Security Project, Matthew directed efforts to integrate Ukraine into European energy markets, strengthen its national regulator, and restore critical infrastructure. He has also led technical teams to design rooftop solar and efficiency programs in Vietnam, develop tariff methodologies and energy laws in Central Asia, and advance cross-border power trade in Southern Africa. 

At WynBay Tech, Matthew applies his expertise to help public and private sector clients implement pragmatic, investment-ready energy solutions that combine policy reform, market design, and sustainable infrastructure development.

Ellen Bomasang is an accomplished energy, climate, and equity expert with over 25 years of experience advancing clean energy transitions, strengthening climate resilience, and embedding social impacts in energy and environmental programs. She has managed complex, multi-country projects across Asia, Africa, and other regions. Her portfolio includes renewable energy policy reform, climate risk assessment, stakeholder engagement, and integration of social equity into infrastructure and energy systems. Ellen has contributed to sector knowledge through published thought pieces in inclusive energy systems, energy transition strategies, and climate resilience, reinforcing her reputation as a respected voice in the field. 

A recognized thought leader in equitable energy planning, Ellen has designed and implemented strategies, training programs, and policy advisory support that empower women, engage youth, and expand participation in energy markets. She has collaborated with governments, multilateral and bilateral donors, private sector partners, and community organizations to ensure that clean energy and infrastructure investments deliver measurable social and economic benefits. 

At WynBay Tech, Ellen applies her expertise to help clients align sustainable infrastructure and energy investments with community priorities, ensuring solutions are technically sound, socially inclusive, equitable, and resilient. 

Dr. Molly Hellmuth is a global expert in climate resilience, risk management, and sustainable development, with more than 25 years of experience guiding programs and policies across Asia, Africa, Latin America, and the Caribbean. She has advised governments, development banks, and private investors on integrating climate risk into infrastructure, energy, water, mining, health, transportation, agriculture, defense, land use, and financial systems—helping translate climate science into actionable investment and policy frameworks. Her work for institutions such as the Inter-American Development Bank, World Bank, and USAID has supported adaptation, low-emission development, and climate-aligned finance in more than 40 countries. In Latin America and the Caribbean, she has advanced climate risk disclosure, blue-green banking, and environmental safeguards to help countries build resilience within multi-billion-dollar sovereign lending portfolios.

Dr. Hellmuth has held senior leadership positions including Senior Director for Global Delivery at Abt Global, Senior Technical Director for Climate Strategy at Winrock International, and Lead for the International Climate Resilience Market Portfolio at ICF. Earlier, she worked with Columbia University, UNEP, and IIASA on climate and water modeling, risk analysis, and science-policy outreach. She has authored over 80 publications and served as Lead Author of the International Chapter of the 5th U.S. National Climate Assessment. Dr. Hellmuth holds a Ph.D. and M.S. in Water Resources Engineering from the University of Colorado Boulder, and dual bachelor’s degrees in Natural Resources and French Studies from the University of Minnesota.

 Arijanto “Arie” Istandar is a highly experienced environmental engineer and water resources specialist with more than 20 years of experience leading water, wastewater, and solid waste management initiatives across Southeast Asia and the Pacific. He has supported programs financed by the Asian Development Bank (ADB), World Bank, and USAID, contributing to the modernization of urban water supply systems, wastewater treatment facilities, and integrated solid waste strategies in Indonesia, the Philippines, Vietnam, and Papua New Guinea, among others. His project portfolio includes utility performance improvement, non-revenue water reduction, and waste-to-resource initiatives that promote energy recovery and circular economy principles to reduce environmental impact and strengthen local service delivery.

At WynBay Tech, Arie brings a holistic perspective that bridges engineering design, institutional strengthening, and sustainable resource management. He is deeply committed to advancing climate-resilient, low-carbon, and inclusive infrastructure solutions that align with WynBay’s mission of integrating innovation and impact. Arie holds an MSc in Environmental Engineering and a BSc in Civil and Water Resources Engineering. He continues to apply his regional experience and technical acumen to help clients and communities transition toward more sustainable and circular water and waste systems in the U.S. and internationally.  

Michael Kunz brings over 20 years of international experience in designing and delivering high-impact programs that connect innovation, policy, and market opportunities. He has worked in more than 25 countries, partnering with public agencies, private investors, philanthropies, and multilateral organizations to strengthen innovation ecosystems, develop investment-ready frameworks, and implement solutions that advance economic growth and climate resilience. His track record includes co-developing pioneering initiatives such as the first Nationally Appropriate Mitigation Action (NAMA) for mangrove carbon capture, co-developing the Private Sector Call to Action for Resilience, and authoring several publications that promote innovative investments in climate resilience.

At WynBay Tech, Michael leads innovative program design and develops cross-sector partnerships that turn complex challenges into scalable solutions. Drawing on his experience in climate adaptation strategies, blue carbon policy, and private-sector–driven infrastructure investment, he ensures WynBay Tech’s offerings are both future-focused and grounded in practical delivery models. His ability to connect technical innovation with actionable funding and implementation pathways strengthens WynBay Tech’s capacity to deliver impactful, results-oriented solutions for clients in both the public and private sectors. 

Stephanie Landers Silva is a senior advisor with over 15 years of experience driving private sector engagement and delivering strategic advisory services for multinational companies, local businesses, industry associations, and NGOs. She has led partnerships with companies and entrepreneurs in the U.S., Asia, Africa, and Latin America to develop market-driven solutions that create both business and social impact. She specializes in building sustainable and inclusive supply chains and markets, covering sectors ranging from consumer goods and packaging to tourism and the digital economy.

Stephanie brings deep expertise in agriculture and the food and beverage industry, with a special passion for the coffee sector. She has designed and led multimillion-dollar initiatives that strengthen market competitiveness, inclusivity, and climate resilience across agricultural value chains. Her portfolio includes collaborations with international traders, global brands, industry associations, and producer cooperatives to improve supply chain sustainability and expand market access. 

At WynBay Tech, Stephanie helps clients and partners bridge commercial objectives with sustainability and inclusion to deliver innovative, market-driven solutions.

Fluent in English, Spanish, and Portuguese, Stephanie holds a Master of Arts from The Fletcher School at Tufts University, where she focused on international business.

Dan Potash brings over 30 years of experience in energy systems, infrastructure finance, and power sector reform across the U.S. and globally. He has advised the U.S. Department of Energy on electrification of non-powered dams and EV transition strategies for small and medium-sized manufacturers, and supported developers on solar, cogeneration, and energy storage projects in California and Colorado. Internationally, Dan has mobilized more than $1 billion in renewable energy investments, working with the World Bank, IFC, and EBRD. He has advised governments on power sector privatization and reform and structured financing for renewable projects in Asia, Sub-Saharan Africa, and the Caribbean. His expertise spans project structuring, financial modeling, tariffs and cost-of-service analysis, and contracting, with transactions ranging from advanced natural gas and coal facilities to leading-edge solar, wind, and efficiency projects.

In addition to his advisory work, Dan is a recognized thought leader in energy finance. He founded and led Power Project Financing, an independent consultancy that guided developers in structuring and financing both conventional and renewable projects, and has taught courses on project finance for USAID, USTDA, ExIm Bank, and state energy commissions. He has published more than 30 professional articles. With an MBA in Finance and Marketing and a BS in Industrial Engineering from Columbia University, Dan combines technical, financial, and market expertise that directly supports WynBay Tech’s mission of delivering sustainable, innovative, and financially sound infrastructure solutions in the U.S. and globally.

Dr. Tara Reed is a community engagement and systems-change leader with more than 15 years of experience strengthening housing, homelessness, and public service systems. She has directed multi-million-dollar, federally funded initiatives, guiding federal, state, and local agencies in designing practical, community-informed solutions. At Abt Global, she led a nationwide technical assistance and research team, developing tools and training that improved service delivery and fostered meaningful stakeholder participation. Her leadership helped public agencies and nonprofits translate strategic goals into operational results and contributed to significant project wins for community-driven initiatives.

Previously, as Executive Director at Mental Health America of Los Angeles, Tara managed $4M+ in city, county, and philanthropic contracts, overseeing outreach, supportive housing, tele-engagement, and resource coordination for vulnerable populations. Tara holds a PsyD in Multicultural Community Clinical Applications from Alliant International University, an MS in Psychology from California Lutheran University, and a BA in Psychology from UCLA.

Nathalie Risse, Ph.D., is an international affairs professional with nearly 20 years of experience advancing sustainability across the United Nations, international organizations, governments, and the private sector. She has served with UNDP and the UN Secretariat (DESA and OHRLLS), where she mobilized support for over 90 vulnerable countries, authored a flagship report on UN support to least developed countries, and contributed to the early development of the Sustainable Development Goals and the UN’s Global Sustainable Development Reports. She has also played key roles in coordinating complex multi-stakeholder initiatives, producing flagship sustainability analyses, and supporting intergovernmental negotiations. Beyond the UN, Nathalie has advised governments, the OECD, European Commission, IISD, and Canada’s National School of Public Administration (ENAP), where she advanced work on strategic environmental assessments, sustainable development policy, and multilateral negotiations.

Since 2023, Nathalie has brought her expertise into the private sector. As Senior Researcher with The Conference Board, her work on corporate sustainability strategy and ROI has been featured by Bloomberg, Politico, and the Harvard Law School Forum on Corporate Governance, and she advised Fortune 500 companies. She also supports large corporations in the preparation of comprehensive sustainability and ESG reports through the Governance and Accountability Institute. Fluent in English and French, Nathalie holds a Ph.D. in Environmental Management from Université Libre de Bruxelles and a certificate in Sustainable Business Strategy from Harvard Business School. At WynBay Tech, she will apply her extensive global policy, sustainability reporting, and corporate governance experience to help clients translate commitments into innovative strategies that deliver measurable impact for communities, businesses, and the environment. 

Based in Thailand, Cecilia Brady is a senior international development strategist with extensive experience bringing governments, civil society, and the private sector together to address complex global challenges. For nearly two decades she has advised USAID, multilateral organizations (the African Union, UNDP) and national governments (Government of Mexico, multiple emerging donors in Eastern Europe) on partnership design and collaborative strategy, with on-the-ground engagements spanning Africa, Latin America, Asia, and beyond. She has a proven track record of identifying collaboration opportunities for stakeholders that might not naturally work together and turning those partnerships into joint solutions that create real impact.

Cecilia’s futures practice is grounded in this global development expertise. Having seen firsthand how social, economic, and political dynamics shape outcomes, she applies foresight to help organizations anticipate change and identify new pathways for cooperation. Her work bridges two worlds: the practical realities of economic and social development, and the forward-looking perspective of futures. In this era of volatility and transformation, Cecilia's work enables partners to prepare not only for emerging risks but also for new opportunities to collaborate. Recent projects include a scenario exercise for the Government of Malawi, futures analysis and strategy for an education-focused NGO in Madagascar, and a futures exercise for an international exchange organization. Cecilia is a Professional Member of the Association of Professional Futurists and in 2024 was invited to present her work at the African Futures Conference.

At WynBay Tech, Cecilia combines foresight methodologies with deep regional knowledge of Southeast Asia, ensuring that client strategies are futures-ready and actionable, and focused on resiliency. 

Based in Amman, Jordan, Dr. Amal A. Hijazi brings over 25 years of leadership and technical expertise in the water, wastewater, and environmental sectors across the Middle East and North Africa. A Jordanian Australian national, she has successfully managed and delivered large-scale, multi-million-dollar projects funded by USAID, the World Bank Group, IFC, GIZ, UNDP, and the European Union.  Dr. Hijazi's career spans senior roles with USAID, the International Finance Corporation, and her own consultancy—Sustainable Environmental and Energy Solutions (SEES)—where she led complex initiatives in water reuse, wastewater management, climate change adaptation, and environmental safeguards. Dr. Hijazi has extensive experience in public-private partnerships, policy development, and governance, with projects on water-energy-food security, waste management, and social safeguards.

A Certified Environmental and Social Safeguards Consultant with the World Bank and EBRD, Dr. Hijazi has worked in Jordan, Abu Dhabi, and across the MENA region. Her award-winning work on water reuse in Jordan has received international recognition from the UNDP, the American Academy for Environmental Engineers, and the International Water Association.  Dr. Hijazi holds a Ph.D. in Environmental Engineering from Queensland University of Technology (Australia), an M.Sc. in Environmental Engineering from the University of Newcastle (UK), and a B.Sc. in Chemical Engineering from the University of Michigan (USA). Based in Amman, Jordan, Dr. Hijazi is fluent in Arabic and English, and proficient in French.

Based in Manila, Philippines, Josephine A. Mangila-Tioseco brings nearly 30 years of experience in clean energy policy development, power sector reforms, strategic planning, and development communications across the Asia-Pacific region. She has led and supported major programs funded by the EU, USAID, World Bank, IFC, and GIZ, with a focus on renewable energy, rural electrification, energy efficiency, and climate change mitigation. Josephine most recently served as Senior Energy Efficiency Strategy Expert for the EU-funded Access to Sustainable Energy Programme (ASEP), supporting the Philippine Department of Energy in advancing building energy performance, mini-grid efficiency, appliance standards, and the implementation of the Energy Efficiency and Conservation Act. She has also worked extensively on energy transition initiatives in Southeast Asia, including as Country Coordinator for USAID’s Low Emissions Asian Development Program (LEAD) and as an advisor to the UNOPS-administered Southeast Asia Energy Transition Partnership (SEA-ETP).

At WynBay Tech, Josephine serves as Expert Advisor on the Power Sector for Asia and the Pacific, providing technical and strategic guidance on energy reforms, efficiency frameworks, and clean energy transitions. Her career began at the Philippine National Power Corporation, where she played a central role in corporate strategy and communications during a critical period of sector reforms. Since then, she has become a trusted advisor to governments, donors, and regional institutions, with a strong record of stakeholder engagement and program delivery. 

Josephine holds a Masters in Development Management from the Asian Institute of Management, a BS in Business Administration (Economics), and is a doctoral candidate in Public Administration at the University of the Philippines.

Based in Barbados, Patricia Shako brings more than 25 years of leadership in climate finance, project development, and resilience-building across the Latin America and Caribbean region. She has managed and advised a diverse portfolio of programs funded by multilateral development banks, bilateral donors, and international NGOs, spanning 23 Caribbean states. Her expertise includes project design, formulation, and analysis; delivery of technical assistance; and monitoring and evaluation of climate and development initiatives. Patricia has served in senior roles including Chief of Party for the USAID-funded Caribbean RESET program, Chief of Operations for the Inter-American Development Bank in the Eastern Caribbean, and as staff of the World Bank and Caribbean Development Bank. She also advised the UK Government (FCDO) on climate and disaster resilience, where she led donor coordination on disaster risk finance, supported the design of climate-resilient infrastructure, and helped mainstream adaptation into National Adaptation Plans (NAPs).

At WynBay Tech, Patricia serves as Expert Advisor on Climate Finance and as the firm’s Regional Expert for Latin America and the Caribbean. She leverages her deep experience in donor coordination, regional development policy, and climate-resilient infrastructure to strengthen WBT’s service offerings in energy, environment, and infrastructure. Patricia holds a Master’s in Applied Environmental Economics from the University of London – Imperial College, an MBA in Finance, and a BSc. in Economics and Accounting from the University of the West Indies (Mona). She is also a certified Lead Auditor for ISO 9001 & ISO 14001, with specialized credentials in greenhouse gas quantification, reporting, validation, and verification—bringing technical rigor to climate finance and resilience programming.