Government department + software project = total failure. .
I would love to know how cheaply this same project could be done. Probably by one person. Probably a $10,000 project with the final project size 100 times smaller, run 100 times faster, 100 times more accurate. [That is what I achieved after a payroll application they tried to force on our dept. was discarded and we rolled our own.]
Not a real biggie, just a replacement for Jobseeker’s Allowance, Income-related Employment and Support Allowance, Income Support, Child Tax Credits, Working Tax Credits, Housing Benefit for the whole of the UK population. I mean how hard can it be? Given your obvious talents I am sure you could knock something together using a few Excel macros by next Tuesday.
One of the things about this is that it is being driven by an ideologue who doesn't give a toss about evidence, not quite the person who thinks all government sponsored software development but pretty close.