Richard Sage
Sotozeo
Richard Sage is an English Chartered Accountant who has long been a trouble-shooter and problem-solver regarding data and processes in practical situations.
A Global Top50 placing in Modeloff (robust Excel spreadsheets can be viewed as a fairly pure form of functional programming) confirmed one particular skill, but he uses different tools according to what is most suitable.
The first version of what became Sotozeo was created to solve an issue on a particular project (cleaning up a Customer Ledger)
He then discovered that the same tool was relevant for other types of project too.