[Gustek]

There are many of them out there, but they have a much lower budget than banks, FAANG, and other top tech companies. Because of that they usually have a much smaller reach, and you don't hear about them much.

Computers are everywhere today, and charities do work more efficiently thanks to specialised software as well.

In the UK, for example, you can find a job at a charity on https://www.charityjob.co.uk/, and some need software engineers/web developers.

If you want more of technology-focused companies, one example that comes to my mind is a Little Ripper, life-saving drone https://thelittleripper.com.au/.

Another one, online GP https://www.babylonhealth.com/

They are out there, but sadly they don't have the same reach as corporations. Another debatable reason: to save our planet, all of us need to take action and software can't help here.