You will learn a lot more especially in bytedance and there will be a lot more opportunities in the future. It is not about the pay per hour. There are limited things that you can learn by yourself like scaling the massive and complex system from ground up. 5 years down the road, the guy from bytedance will earn a lot more than someone from DBS seed because of their expertise.

Anw i think you have a slim chance to get bytedance offer. There are so many applicants that even if you are good, chances are still low. I know quite a lot of NUS first class honours and dean listers get rejected from bytedance.