Context - charity fundraiser with 15+years experience with specialism in one area of fundraising.
Needing some ideas about maintaining a long term career in a single area of fundraising or diversifying into other areas of fundraising.
I'm in the position where I have 2 job offers - one is to stay in my existing organisation and get a promoted role basically making me head of specialism for UK with an ok salary increment over 3-4 years. I'd be staying where I am but moving into a promoted position after a decade doing a similar job. Other option is a head of fundraising for a local charity where I would have responsibility for managing and growing all areas of fundraising with the salary being just a little bit more than I get now.
Question is for career progression and the range of future roles that could be available is it better to have a really strong specialism (which in my case is trusts and foundations) or gain a much broader experience in a leadership role - keen to hear what people think