I’m a programmer (software engineer) in a Russian branch of a big multinational IT company. The company itself comes from US, and its corporate culture is US-based too. I am quite happy with my current job, and was not specifically looking for a new one. But some time ago I gave a talk at a local forum, and after this I was independently approached by two small local IT companies, who offered to talk about my possible move to them. The companies are local, but they try to follow US-like corporate culture too.
Now, I had several interviews at both of that companies, which looks rather successful, so I hope that I will get at least one job offer soon, or maybe two. I hope that the offer(s) will come with a higher compensation (all bonuses etc included) than the one I have at my current position; I hope for at least 30-50% rise (at least I will not agree to a smaller value, and I have mentioned this several times to HRs at the two new companies).
As I’ve said, I like my current job, but also I think I will like the both possible new jobs too. I expect minor disadvantages (say I think that working for a big company would be a plus if at one day I will decide to relocate away from Russia), but overall I think that the compensation rise definitely will outweigh them.
So I would like to take advantage of having a job offer (or two) while having a good job too. I might, for example, come to my current manager and say that I have a job offer and try to negotiate a matching pay rise. I think that this might work, as I feel that I am valued at my current position (my manager has several times expressed his satisfaction on my performance, I am constantly given more-that-average pay rise on a more-or-less regular pay rise events, etc). However, I am afraid that the manager might consider me at least overpaid and will start requiring much stronger performance, or will deny further regular pay rises (the latters average to about 10-15% per year), or will even silently start to look for a replacement for me, being afraid that I will eventually leave.
So, what is the best tactics to take advantage of such a position without having much drawbacks?
Also, if I get two offers, how should I handle this to get better conditions without much drawbacks on my future job?