In English, we generally use „a“ or „an“ before job titles when talking about someone’s profession in a general sense.

  • Correct: She is a project manager.
  • Incorrect: She is project manager.
    (The article „a“ is missing, which makes the sentence sound incomplete.)

Tip:
The article „a“ is used with consonant sounds, and „an“ is used with vowel sounds (like an engineer).