A skilled engineer with an unseen, unspoken alternative occupation that is as a Ninja. The said person uses his/her engineering skills in infiltration, trapping, and or assassinating. A Ningineer should never be underestimated, for the skills of a ninja coupled with an engineer's intellect are far more deadly than that of a normal ninja.
Commonly misspelled "Ninjaneer."
1. Jake should not have trifled with his ex-girlfriend's sister, for she was a Ningineer.
2. A Ningineer can kill you with a pencil and a T-square in over 3000 totally different but equally painful ways.