Meaning : A person who uses scientific knowledge to solve practical problems.
Synonyms : applied scientist, technologist
Meaning : The operator of a railway locomotive.
Synonyms : engine driver, locomotive engineer, railroad engineer
Meaning : Design as an engineer.
Example :
He engineered the water supply project.
Meaning : Plan and direct (a complex undertaking).
Example :
He masterminded the robbery.
Synonyms : direct, mastermind, orchestrate, organise, organize