Siobhan serves as Programme Manager for the Climate Action Planning Programme in North America, within the Measurement and Planning Team. In this role, she provides technical assistance to help North American cities develop Paris Agreement compliant climate action plans. She is based in New Orleans, where she previously served as the FUSE Executive Fellow for Climate Action to the City of New Orleans to develop and launch the city’s first climate action plan, 50% by 2030: Climate Action for a Resilient New Orleans. Prior to joining C40, Siobhan developed and implemented a variety of programs and policies for community-based sustainability and resilience around the U.S. She coordinated working groups for the Clinton Global Initiative focused on advanced energy, circular economy and housing for U.S. cities and the Caribbean; led education and outreach at the Center for Sustainable Energy working with cities and utilities on energy and electric vehicle programs including California’s statewide education program for energy management; and launched solar schools projects throughout the country with the Bonneville Environmental Foundation. Siobhan holds an MPA in Sustainability Management from the Presidio Graduate School and a BA from Columbia University.
Sisekelo is the Business Planning & Reporting Team Assistant in the Business Planning, Measurement & Innovation Department. In this role, she is responsible for producing robust and compelling data and visualisations for C40 decision-makers as well as C40 member cities.
Before joining C40, Sisekelo worked as an analyst for a developmental management consultancy. She has been involved in several transport industry development and green energy projects in various regions of South Africa.
Sisekelo completed her studies in Social Sciences at the University of Cape Town, with majors in Environmental Science and Anthropology. She further went on to study Business Management, also at the University of Cape Town.
Hajar serves as the C40 Community Resilience Adviser for Kuala Lumpur, Malaysia.
Prior to joining C40, she served as a Town Planning Officer at the City Hall of Kuala Lumpur, where she managed the Local Agenda 21 portfolio, focusing on community empowerment projects.
Hajar also brings extensive experience in local plan and strategy development from her time at a leading local urban planning and design consultancy in Kuala Lumpur.
Hajar graduated with a Bachelor of Urban and Regional Planning from the International Islamic University Malaysia.
Siya Sauka has more than 10 years of experience in the fields of climate change, natural (and water) resource management and environmental sustainability. She has focused on research, analysis and advisory in both the public and private sector, and has also worked closely with national governments, research institutions, multinational corporations, and international development finance institutions.
Prior to C40, Siya worked as an Engagement Manager at Pegasys (a development focused management consultancy), and as a Climate Researcher at the South African Institute of International affairs (an international affairs think tank). She has worked extensively on climate research and climate resilience. Her expertise also includes disaster risk assessment and reduction, carbon and water accounting, renewable energy, and promoting a green, inclusive and circular economy. Recently, she developed an interest and focus on the integration and use of data and information for effective decision-making in climate adaptation, particularly in developing countries.
Siya holds an MSc in Geography from the University of the Witwatersrand (dissertation focused on a Flood risk assessment for the Crocodile River, Mpumalanga), and is in the process of finalising her PhD application (focused on Analytical Approaches for Climate Adaptation and Decision-Making in the Face of Uncertainty).
Snigdha Garg serves as the Senior Manager, Adaptation Research and Integration. In this position, she is responsible for managing adaptation research projects of C40 and mainstreaming adaptation across C40’s projects and programmes. Before joining C40, Snigdha graduated from the Yale School of Forestry and Environmental Studies with a Masters in Environmental Management. She previously worked with ICLEI South Asia for three years on building climate resilience strategies, disaster risk reduction, developing climate change mitigation and adaptation plans for cities, and bench-marking basic services against national standards for South Asian cities. She has experience in sustainability consulting, project management and urban resilience. In addition, she also holds a Masters of Environmental Studies from TERI University, India and a Bachelors of Science from Delhi University, India.
Stefania oversees C40’s Food Strategy as part of the Climate Solutions & Networks Initiative. Before joining C40, Stefania worked as a policy advisor and project manager at the Mayor’s Office of Milan (2011-2015), where she focused on the Milan Urban Food Policy Pact and overall Food Policy for the city. In particular, Stefania helped design measures and liaised with local and international stakeholders. Stefania also worked as a World Health Organization (WHO) consultant for policy alignment and aid coordination in the health sector in Moldova (2011-2014) and Tajikistan (2006-2009). She has a PhD in Institutions and Policies from UCSC, Milan, and an MSc in Political Economy of Late Development from the London School of Economics.
Stelios Diakoulakis joined C40 in April 2018 and he is based in Athens. He is the Deputy Regional Director for Europe and closely works with the Regional Director in providing support to European member cities regarding their overall participation in C40 activities ensuring they benefit from their membership – both at political and technical level – and also comply with C40 Participation Standards. He is responsible for the delivery of projects of strategic importance for C40 such as the cities’ commitment to ambitious climate targets as well as the development and implementation of Deadline 2020 compliant climate action plans. Prior to joining C40, Stelios worked as Senior EU Policy and International Affairs Advisor to the Mayor of Athens. He has significant experience in European policies and institutions having offered his services for many years in the European Parliament and the Greek Foreign Ministry while he has also worked as a consultant at a private company specialised in the development of strategic regional programs and impact assessments in the EU Cohesion Policy framework. He has studied Economics at the Athens University of Economics and Business and holds a master’s degree in European Studies from the University of Reading, UK. He speaks English, French and Greek.
As Head of Head of Global Events & Special Projects, Stéphanie is responsible for organising innovative and inspiring global events (in–person, hybrid and virtual) that showcase the work of C40 and the leadership of its mayors in taking climate action. She has more than 20 years of professional experience in the fields of strategic project management and international events organisations.
In her previous roles, Stéphanie served for 10 years as the Chief of the Cabinet of the President of the French Tennis Federation, where she oversaw the directorate of the President’s office, international and institutional relations, as well as the Presidential box and all related events during the French Open and the ATP Paris Masters 1000 tennis tournaments. She also worked as a project manager at the French National Olympic Sport Committee and took part in Winter and Summer Olympic & Paralympic Games, first covering editorial management roles before developing VIP hospitality programmes.
Stephen joined C40 as the City of Cape Town’s climate change adviser in March 2018. He has been working on clean energy and climate change for more than 10 years In between working as an independent consultant, coach and facilitator, Stephen most recently worked with Pegasys Strategy & Development on projects related to resilience, clean energy, and climate change mitigation, specialising in low-carbon urban development. Stephen also worked with ICLEI Africa where he provided technical and strategic support to the Urban Low Emission Development Strategies project. Stephen has assisted numerous cities and local governments in South Africa, Rwanda, Mozambique and Comoros with GHG emissions modelling, reporting and target setting, as well as capacity building, and with developing, monitoring, reporting and evaluating climate change strategies and action plans. He has designed and facilitated multi-stakeholder engagements related to clean energy and climate change. Prior to working in the low-carbon cities space, Stephen worked for 4 years as a researcher at the Energy Research Centre in Cape Town, where lectured in energy and climate change topics, and led several research projects on residential energy efficiency and behavioural change. Stephen has a Master’s degree in Operations Research from the University of Cape Town and a degree in Statistics and Actuarial Science from the University of the Witwatersrand. He also holds certificates with the World Bank’s City Climate Planner Program and with the Centre for Appreciative Inquiry as a coach and facilitator. In his spare time Stephen can be found running up and down mountains, and is a climber, semi-professional ultra-trail runner, and artisanal bread-baker.
Stephen Green serves as the Senior Manager of IT Systems & Projects at C40. His focus is to identify and research important technology projects for the organization and then develop and execute related plans. Additional responsibilities include reviewing IT inventory needs, facilitating weekly IT training sessions and monitoring and proactively managing the organization’s computers and phones. Stephen also supports implementing and maintaining security procedures as well as departmental processes and policies.
Prior to joining C40, Stephen worked at the Genius Bar for Apple for nearly six years and was a Genius in the London Covent Garden store for nearly two years. After Apple Retail, Stephen joined an Apple Mac-managed service provider in London, where he supported and serviced the IT of a dozen different businesses across central London, both remotely and on-site. Stephen graduated from the University of Portsmouth with a BA in Film Studies and Entertainment Technology.
Steve Campbell serves as C40’s IT Project Technician working behind the scenes to design, manage and roll out new IT projects, apps and services for C40.
Before joining C40, Steve was an IT Cloud Administrator for Ansys from August 2016 – August 2017. In this role, Steve gained experience setting up, testing and deploying various cloud-based solutions. Steve also served as a new student mentor at the University of Hertfordshire from October 2017 through May 2018.
Steve graduated from the University of Hertfordshire with a degree in IT Management. He likes staying active and in shape and enjoys many outdoor recreational activities.
Rendro serves as Regional Senior Programme Manager in SEA for C40’s UCAP Climate Action Implementation (CAI) Programme. Rendro works closely with the Head of Implementation, C40 City Advisers and other team members, and external consultants to develop and deliver the varied technical assistance programmes and training to enable and support C40 cities in Southeast Asia to implement their climate action plans.
Before joining C40 in 2023, Rendro spent nine years working at Green Building Council Indonesia, leading the team to carry out market transformation regarding green buildings, and reducing GHG emissions in buildings. Rendro holds a Bachelor’s degree in Physics Engineering from Sepuluh Nopember Institute of Technology in Surabaya, Indonesia.
Suriya serves as Contracts and Procurement Manager for C40’s UCAP CAI Programme. Before joining C40, Suriya was Grant Coordinator for the Tropical Rainforest Conservation and Research Centre Malaysia, coordinating budgets and teams across South East Asia for the EU-funded Sustainable Use of Peatland and Haze Mitigation in ASEAN project. Working towards collective actions and enhanced cooperation among non-state actors to improve sustainable peatland management. Prior to that, Suriya was the Project Development Officer at the USAID-funded Malaysia Reform Initiative, encouraging civic participation in Malaysia’s democracy and governance.
She previously worked in construction consultancy in Malaysia and Singapore, specialising in public sector projects. At Arcadis, Suriya provided cost and contract management for public sector housing in Singapore. Suriya holds a Master’s degree in Public Policy from the National University of Singapore and a Bachelor’s degree in Quantity Survey from Universiti Sains Malaysia.
Tawanda serves as the Technical Adviser (Waste) for C40’s UCAP Climate Action Implementation (CAI) Programme in Africa. In this role, he provides technical assistance to the C40 cities of Accra, Addis Ababa, Dar Es Salam, Johannesburg, Lagos, Nairobi and Tshwane in implementing plans in line with the Paris Agreement.
Prior to joining C40, Tawanda worked for the GreenCape Sector Development Agency in South Africa, as an Expert Analyst (Circular Economy). His focus ranged from the development of Decision Support Tools aimed at encouraging municipalities in taking a systems approach for the development of integrated waste management; assisting municipalities and the private sector with navigation of the legislative environment for the development of waste projects; conducting material flow analyses in order to identify opportunities for circular economy interventions. In addition, he facilitated engagements between the City of Cape Town and Producer Responsibility Organisations in an effort to synergise efforts for diversion of waste, and support integration of the informal sector as the Extended Producer Regulations came into effect.
His experience also included working on the Digital Global Biogas Cooperation (DiBiCoo), aimed at supporting the development of biogas projects by linking European technology providers with emerging and developing markets – focusing on Argentina, Ethiopia, Ghana, Indonesia and South Africa.
Tawanda holds an M.Sc and B.Sc in Chemical Engineering from the University of Cape Town, where he focused on biodiesel production, and Fischer-Tropsch process for chemical production from syngas (carbon monoxide and hydrogen).
Tenele Ndlovu serves as C40’s Project Officer – Zero-Emission Buses within the Transport Team. In this capacity, she is instrumental in supporting the delivery and implementation of our Zero-Emission Buses programme, contributing to the global transition to zero-emission buses in various C40 cities.
Tenele is based in Pretoria, South Africa, and brings valuable experience from her previous role at GIZ, where she worked in the Climate Support Programme (Phase IV), specializing in mitigation and monitoring & evaluation, and previously at the Department of Environmental Affairs (now called the Department of Forestry, Fisheries, and the Environment) in South Africa.
Her dedication to climate mitigation and the environment is evident through her professional journey. Tenele holds an Environmental Management (Honours) degree and is currently pursuing an MSc in Environmental Science, focusing on the implementation of climate change policy strategies.
Thomas Maltese serves as Senior Manager for C40’s Zero Emission Bus Rapid-deployment Accelerator (ZEBRA) project, led by C40 Cities and the International Council on Clean Transportation (ICCT). Working across different teams in C40 and partner organisations, Thomas will support C40 cities plan, finance and deploy electric buses. This will be initially done by working with Medellin, São Paulo and Mexico City, as well as the region’s leading city in this sector, Santiago, by creating best practice sharing opportunities for bus electrification in Latin America.
Prior to joining C40, Thomas kickstarted his career in the field of climate action at The Climate Group, as EV100 Project Coordinator, managing amongst other things relationships with EV100 members. EV100 is a global initiative bringing together companies committed to accelerating the transition to electric mobility from within their own operations.
Half-Italian and half-British, Thomas grew up in Italy and later graduated in Political Science from the Université Libre de Bruxelles in Belgium.
Thulani is C40’s Senior Manager for Water Security, Partnership and Implementation in Africa. In this role, he works closely with C40’s regional leaders and cities to drive strategic water security goals.
Prior to joining C40, Thulani served as a technical advisor at WaterAid, providing expertise on programme management and implementation of community-led WASH (Water, Sanitation and Hygiene) in Southern Africa, as well as supporting strategic private-sector partnerships. He has a background in civil engineering, where he has led the technical design and construction of urban grey and blue infrastructure and water management in municipalities, mining and the consumer goods industries.
Thulani holds a Master’s degree in Structural Engineering and an MBA from the University of Pretoria. When not working, he enjoys golfing and farming.
Tibebu has a total of 13 years of work experiences. He served as an instructor, program coordinator, and consultant in government and non-government institution in Ethiopia. He has worked in partnership with government ministries and international partners such as WRI, UNDP and IIED.
Prior to joining C40, he worked as Climate Change Expert for Echnoserve Consulting – a locally renowned environment and climate change consultant company. While with the consulting company, he assisted a diverse client base in providing advisory services and solution in the area of climate change. One of the well-known projects he has worked on include the development of the Addis Ababa GHG Inventory Report in 2012 using the GPC. This report was done in partnership with WRI and he worked in collaboration with a Technical Working Group comprising representatives from various sectors. During this time, WRI also gave three on-site capacity building training and follow-up webinars.
He also served as a consultant at UNDP in the preparation of climate change adaptation scale-up investment plans for 150 districts in Ethiopia.
Tibebu is an art and nature enthusiast but in his spare time, he also likes reading and spending time with family and friends.
Toby serves as Data Analyst for Climate Action and Air Quality, within the Measurement and Planning Team. In this role, he helps to build and operate models that allow cities to measure the greenhouse gas, air quality and health impacts of climate action and related initiatives. Previously Toby worked as an intern at C40, where he helped to build project-level emissions analysis methods and also supported C40 cities with a variety of data collection efforts. Prior to joining C40, he worked in France, Spain and the UK as an English Language Teacher. Toby has an MSc in Environment and Sustainability from Birkbeck College (University of London) and a BSc in Zoology from the University of St. Andrews.