Several organizations have stepped up to help people displaced from tech companies find their way to a climate career. These include:
Climate Base: https://climatebase.org/
Terra.do: https://terra.do/
Climate Draft: https://www.climatedraft.org/
And at Environmental Defense Fund’s Green Jobs Hub, you’ll find a terrific list of climate career resources: https://www.edf.org/degrees/green-jobs-hub