Was going to buy the calculations in as an API because it was an opaque government standard, API turned out to be incomplete after we bought it, rang them up to ask why "oh we are getting out of that side of the business".
I had two weeks to build out an API (over Christmas) that implemented a government calculation that was implemented in one 200 page PDF[1] and then modified in another two, total calculation had 44 individual steps referring to several dozen data tables some with hundreds of values.
I did it with a day to spare.
It was probably the single greatest pure technical programming I've done in my career.
Was going to buy the calculations in as an API because it was an opaque government standard, API turned out to be incomplete after we bought it, rang them up to ask why "oh we are getting out of that side of the business".
I had two weeks to build out an API (over Christmas) that implemented a government calculation that was implemented in one 200 page PDF[1] and then modified in another two, total calculation had 44 individual steps referring to several dozen data tables some with hundreds of values.
I did it with a day to spare.
It was probably the single greatest pure technical programming I've done in my career.
[1] https://www.bre.co.uk/filelibrary/SAP/2012/SAP-2012_9-92.pdf