rocket engineer
rocket scientist

The role of the former rocket engineer in Peenemünde, however, was to develop weapons of war.

The Iraqi rocket engineers explained that they had been shopping for more tubes because their supply was running low.

The nozzles have long been a concern to rocket engineers because of past near-failures.

Duncan wondered what the old-time rocket engineers would have thought of this tiny fuel line.

And any rocket engineer will tell you how much energy that requires.

Some people say he was the most important rocket engineer of the 20th century.

Now where was that camp where they'd been in need of a rocket engineer?

And he wondered: Had there ever been a camp where they'd said they could use a rocket engineer?

I remember it was funny those guys would need a rocket engineer.

I'll consult the rocket engineers and see what they can improvise in the way of fighting equipment.