(I’m not sure exactly where to post this …)
I get the impression that the Numba dev-team is very small, because it is always the same few people who are answering all issues here and on GitHub. It seems that there’s too much work for such a small team. I have an idea on how you might be able to raise money to hire more people to help you.
I’ve been joking in my posts here that I already have all the Numba fan-merchandise. That’s not true, of course, because you don’t sell any fan-merch. But I think you could! Things like t-shirts and posters would probably be very easy to sell. There are companies that can handle all of the logistics for you, and I see that some of you are located in Berlin, where I know there is a big art-scene, so you could get some cool designs made.
I would suggest charging premium-prices like $50 for a t-shirt or poster instead of just $20 which is common. People will know that the money goes to support the Numba development, so they will be willing to pay a premium but still reasonable price. And for the wealthy developers and companies who might want to support Numba with more money, you could make cool posters that are signed by the dev-team for e.g. $1000 a piece.
You could also make the merch in limited editions, and get new designs made whenever you run out, so people will hopefully come back and buy more, because repeat customers are always the best source of revenue.
I think you would be able to raise enough money to hire at least one more developer. But instead of hiring one person full-time, you could try and hire people from the community for individual short-term projects. I imagine it is very hard to find people with the know-how you need, but some of the people in the community who have already contributed to your development on a volounteer basis, might be able to take e.g. 2 days off from their job every week for a couple of months to help improve Numba, and they could then be paid from the money raised from the merchandise sale.
I think this could actually work, and it might be a new way to help fund open-source development in the future.
Why not give it a try?