Work with C40

C40 supports mayors of world-leading cities to implement the bold climate solutions that are needed to secure a healthier and more equitable future for all city residents.

We invite submissions of proposals that help to deliver our diverse projects and activities.

Australia: Couple sitting on field with city skyline in backround — © Jean-Jacques Halans / EyeEm / GettyImages

Requests for Proposals

This web page is updated regularly, so do check in the future for more opportunities to work with C40.

Melhorias do Sistema de Dados e do Protocolo de Enfrentamento ao Calor Extremo e Implementação de Rota Fresca Piloto na cidade do Rio de Janeiro

Data limite para envio das propostas: 23:59 horas BRT de 18 de julho de 2025.

Vegetable and Fruit Markets Waste Management in Ahmedabad – Location and Quantity Assessment, and Dedicated Route Planning for Waste Collection and Transportation

Deadline: July 21st, 2025, at 18:00 (IST)

Market analysis of EV public charging infrastructure in cities – Brazil, Colombia, Mexico & India

Deadline: July 21st, 2025, at 17:00 (EST)

Implementation Plan Development for Organic Waste Treatment in the City of Ekurhuleni

Deadline: August 5, 2025 at 5:00pm (SAST)

Support the selection and implementation of a new Enterprise Resource Planning (ERP) system

Deadline: August 7, 2025 at 5:00pm (EST)

Integrating equity measures in urban air quality policies to deliver benefits fairly: Support for Clean Air Network Technical Working Group

Deadline: August 8, 2025 at 5:00pm (EST)

Breathe Cities Data Knowledge Product: Strength in numbers: how cities are using data to unlock ambitious clean air action

Deadline: August 18, 2025 at 5:00pm (EDT)

View job openings at C40 Cities