As long as you need a market-rate salary, go work for a company that is carbon-negative if you can (e.g. carbon capture or clean energy). One that is vocally pr

As long as you need a market-rate salary, go work for a company that is carbon-negative if you can (e.g. carbon capture or clean energy). One that is vocally pro-enviroment and carbon-neutral would also be an accomplishment. If you need less money, work for a nonprofit focused on environmental issues or research. Working for a politician's campaign might be a good way to apply tech, marketing, or management skills. Don't volunteer. The vast majority of the value is for the volunteer, not for the nonprofit. When you're a (very) part-time volunteer, you'll never get deep enough into their problems that your contributions will outweigh the cost to manage/train you. It's better to advance your own career and donate money to full-time people who are able to devote all of their work time to the issue. (Source: ran a nonprofit for a few years that sourced skilled volunteers for other orgs)