You don't need an engineer who's good at sums...
The accelerometers fitted to aircraft in line service are there to measure flight loads, not to assess the landing. Aircraft are instrumented quite differently for landing performance testing. While accelerometer data is of use, it's by no means a reliable evaluation of the landing.
As UK CAA FODCOM 21/09 says:
The primary trigger for a hard/heavy landing report should be the subjective evaluation by the aircraft commander.
And as for mucking about doing soft landings, all well and good in the right place at the right time, and by the right pilot, but I don't half get nervous when travelling as a passenger if the thing isn't delivered at the right speed in the right place, and firmly.