Hi Athira,
Welcome to the community! And thanks for sharing warmly and freely.
There is a scarcity of tech folks in the impact sector and its wonderful to hear from people like you who want to contribute. I think there are a few misconceptions that i hear from folks a lot - so let me try and write them down.
Myth 1: NGOs/NPOs may not have funds to pay me if i take up a full time job?
Just because social impact orgs are impact and purpose driven does not mean that they dont pay. Think of them as “Not for Loss” organisations. there is a wonderful ecosystem of donors (Trusts, Foundations, Philanthropists, Individual Donors, Corporate Social Responsibility) who have helped build resilient and growing NGOs. There are many for impact orgs where you can expect competetive salaries as per your experience and expertise.
Myth 2: My skills may not be useful in the Impact sector.
Skills are sector agnostic. If you are good at marketing, then you can help NGOs build volunteers, tell stories, fundraise. If you are good at tech, you can help NGOs build websites, chatbots to reach out to remote communities, knowledge management systems, apps to help vulnerable communities, etc. There are some great programs like https://campaign.thebetterindia.com/careerswithpurpose/ , etc which can also help.
Myth 3: NGOs dont need tech right?
We need tech 
just like any other org that needs to serve its users, its team members, run efficient operations, etc. You can find a lot of open positions to explore Tech4Good Jobs - Tech4Good
Myth 4: Can tech really solve problems for vulnerable communities?
Though tech cannot solve fundamental inequalities that exist, it can help in bringing people together in many ways. You can see a few here like
Wish you all the best for your search. And do visit the forum and encourage other tech enthusiasts like you to join the social impact space.
Also inviting others in the forum to help Athira with their thoughts