Hello

You WERE that u're worth 4k SGD, that doesn't mean that you ARE worth that much/little here. The choice of whether much or little is ultimately up to you.

Assuming that engineers with 1-4 years of experience earn about 3-5K here... putting yourself at 4K is statistically fine. If you are satisfied with it, then accept it and that's that.

It doesn't matter whether u're a graduate from M'sia or S'pore. Ultimately, once you've started your job and proven work ethics and results right, your pay will increment based on performance. It's indeed the quality of the experience that u've earned up till now, as well as the quality of the projects that you've engaged in and how you present yourself at interviews that will decide if u're worth 4k, 4.5k, 5k, or whatever more...

Cheers