Spreadsheet wizard req to help link and crunch our data

We have a set of spreadsheets and a handful of docs that we'd like linking in various ways. We need to pull data from our various spreadsheets into a central dashboard. This is not about creating the sheets or our system, we already have them. This work is more about managing the existing system and replicating what we already do. We don't need reinventing!

We are looking for someone to do a few hours here and there on a remote basis, we are in the UK - please note this is not regular work. This will suit someone with polished Excel skills who doesn't mind working in Google sheets. The tasks will be mostly VLOOKUP and SUMIF.