Ich finde meinen Beruf interessant.

In German, finden has two main meanings:

1. Literal “to find” (locate something):

   • Ich finde meinen Schlüssel nicht. – I can’t find my key.

2. Opinion “to find/think” (have an opinion about something):

   • Ich finde meinen Beruf interessant. – I think my job is interesting / I find my job interesting.

In your sentence, it’s the opinion meaning. This is very common in everyday German when talking about what you think of something:

• Ich finde den Film gut. – I think the movie is good.
• Wie findest du das Buch? – What do you think of the book?

Because meinen Beruf is in the accusative case (direct object of the verb).

• The subject is Ich (nominative).
• The verb is finde.
• The direct object is meinen Beruf → accusative.

Beruf is masculine. The possessive mein- takes an -en ending in the masculine accusative:

• Nominative: mein Beruf (my job – as subject)
  
  • Mein Beruf ist interessant.
• Accusative: meinen Beruf (my job – as object)
  
  • Ich finde meinen Beruf interessant.

So Ich finde meinen Beruf interessant is grammatically correct; Ich finde mein Beruf interessant is incorrect.

Meinen Beruf is masculine accusative singular.

Breakdown:

• Beruf: masculine noun → der Beruf (nominative singular)
• It is the direct object of finden, so it must be accusative.
• The possessive mein- declines like an adjective and must show accusative masculine:
  
  • mein → meinen

So:

• Ich – nominative (subject)
• finde – verb
• meinen Beruf – accusative (direct object)
• interessant – predicative adjective describing Beruf

Here interessant is used as a predicative adjective, not as an attributive one.

• Predicative: comes after a verb and describes the subject or object. It does not get endings:

  • Ich finde meinen Beruf interessant.
  • Mein Beruf ist interessant.

• Attributive: comes directly before the noun and does get endings:

  • Ich habe einen interessanten Beruf. – interessant
    • -en because it is attributive and accusative masculine.

So:

• Ich finde meinen Beruf interessant. ✅ (no ending)
• Ich finde meinen interessanten Beruf … ✅ (with ending, because now it’s before the noun)

In German you normally don’t use an article together with a possessive like mein, dein, sein, etc.

So you say:

• mein Beruf – my job
• dein Auto – your car
• sein Haus – his house

Not:

• mein der Beruf
• dein das Auto

The possessive determiner itself takes the place of the article. Therefore:
Ich finde meinen Beruf interessant. is correct;
Ich finde meinen den Beruf interessant. is wrong.

Beruf is masculine: der Beruf.

There is no perfect rule to guess this; you usually have to learn the gender with the noun:

• der Beruf – the job/profession (masc.)
• die Arbeit – the work (fem.)
• das Büro – the office (neut.)

A good habit: always learn new nouns with their article:

• not just Beruf, but der Beruf.

Yes, you can say that:

• Mein Beruf ist interessant. – My job is interesting.
• Ich finde meinen Beruf interessant. – I think / I find my job interesting.

The difference:

• Mein Beruf ist interessant is a neutral statement of fact.
• Ich finde meinen Beruf interessant clearly shows this is your personal opinion.

In everyday conversation, both are fine, but Ich finde … makes your opinion explicit.

finden is a regular verb in the present tense (no stem change):

• ich finde – I find
• du findest – you find (singular, informal)
• er / sie / es findet – he / she / it finds
• wir finden – we find
• ihr findet – you (plural, informal) find
• sie finden – they find
• Sie finden – you find (formal)

Your sentence uses ich finde (1st person singular).

Yes, that is correct German:

• Ich finde meinen Beruf interessant.
• Meinen Beruf finde ich interessant.

Both are grammatically fine. The second version emphasizes “my job” more, as if contrasting it with something else:

• Meinen Beruf finde ich interessant, aber mein Studium war langweilig.
  My job I find interesting, but my studies were boring.

You simply insert sehr before interessant:

• Ich finde meinen Beruf sehr interessant.

Other intensifiers you could use:

• wirklich interessant – really interesting
• besonders interessant – especially interesting
• unglaublich interessant – incredibly interesting

Both can mean “job”, but they’re used a bit differently:

• der Beruf

  • more formal, often means profession / career
  • long-term, what you are trained or qualified to do
  • Mein Beruf ist Lehrer. – My profession is (I’m a) teacher.

• der Job

  • more informal, often a position or gig (can be temporary)
  • Ich habe einen neuen Job. – I have a new job.

So:

• Ich finde meinen Beruf interessant. usually means you like your profession overall.
• Ich finde meinen Job interessant. focuses more on your current position.