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.

Travel Booking tool for C40 Cities

Deadline: 4 July 2025 (23:59 BST)

Enhancing Heat-Health Resilience in Freetown

Deadline: July 11th, 2025, at 09:00 PM (GMT)

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.

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

Deadline: July 18th, 2025, at 17:00 (EST)

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)

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

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

View job openings at C40 Cities