I would be very grateful if you give me some ideas on international funding opportunities for early/mid-career researchers from developing countries like Bangladesh.
See this discussion for several links to international funds and grants: https://www.researchgate.net/post/Global_research_fund_programs_list_any_organization_you_know
As we know, many NGOs in developing countries are getting funds from different funding bodies. I thought, there will be some opportunities for uni teachers/ researchers as well.