This is important. I had several interviews with some Singaporean companies and salary was always the limiting factor. It was absolutely nowhere close to what similar positions would pay in major US cities, let alone New York or SF. Yet cost of living in Singapore is fairly high. While there are some tax advantages, you also have to weigh the risks of such a long-distance relocation and visa issues, as well as the significant cultural differences that you have to embrace to live functionally in Singapore. If anything, it ought to require a significant salary premium to attract talented engineers to bear some of these risks to relocate to Singapore.

One of my specific experiences was with Standard Chartered, since they are one of the largest commercial users of Haskell and have a large Haskell engineering presence in Singapore. Boy, that was disappointing. Basically they think they can use the fact that you get to work with Haskell (even though it is line of business bank software and involves a poorly built custom Haskell compiler) and that it's located in Singapore as means to reduce salary when they import a worker.

If it's that bad with a wealthy investment bank, it's hard to believe it's reached a healthy salary situation there across the engineering spectrum. But I am sure there are the occasional gems there which do offer fair wage for the risks being taken by employees.