słowo engineer z 's na końcu?

Witam,
Czy mam napisać słowo engineer z apostrofem 's na końcu wyrazu w zaprezentowanych fragmentach zdań:

1. The engineer's studies at the Department of Informatics...
2. ... Mr Jan Kowalski conclude with preparation of engineer's thesis and engineer's exam
3. The title of engineer's thesis prepared by...
4. ...thesis and passed the engineer's exam conducted by the Examination Board...
5. obtained the engineer's diploma and engineer’s title

Z góry dziękuję za pomoc.

nie, to blad
sa tam tez inne bledy

zamiast engineer's pisz Bachelor of Engineering

Możesz napisać jakie znalazłeś błędy.

nie studies, nie informatics
nie conclude with preparation
raczej nie prepared