I am an experienced hire, into my 4th year of work, working in an Asian country. Currently, I am into my 3rd month with my Company A which has a probationary period of 3 months and a notice period of 2 weeks.
Before I entered Company A, I have also applied for another job in Company B which is in a totally different industry, one that really interests me. It is really rare and difficult for someone with my background to get into that industry.
In my 1st month with my Company A, I went for 2 interviews with Company B. The final interview was 5 weeks back and I initially thought that it was a goner. However, yesterday, Company B called me to offer me the job.
I am definitely going for Company B. I strongly believe and have confidence that that is in line with my career goals (learning things that I am interested in) and the prospects are much better in that industry, although there is an initial paycut. But the complication is that: 1) My role with Company A is a project role and the project is commencing this coming Monday (a 2-week workshop). 2) There is one other person who is working on this project "part-time". But we are definitely under-staffed.
I would like to seek your advice on how I should bring across my case to my boss as I seek to resign from Company A. How should I bring my point across? My real concern is my boss (F). How can I minimize burning the bridges? Should I suggest to do a short notice to minimize the awkwardness?
I also cannot help but feel bad and guilty. Especially towards my boss and my friend who referred me into Company A. Any advice on this as well?