All four hires will start in their new roles in 2020.
Victor US managing director Jill Frances will be active underwriter at the Asta-managed syndicate.
The Corporation avoids an increase in market levies to pay for the transformation programme.
NDF Deutschland will work in tandem with a parallel UK-backed vehicle to mitigate developing world nat cat and climate change risk.
The ratings agency predicts third-party capital providers will “hold the line” on return expectations after heavy losses.