Моя подруга не любит скучную офисную работу и мечтает быть журналисткой.

In Russian, many nouns have different forms for male and female:

• друг = (male) friend, or generic friend if gender is unknown / not important
• подруга = female friend (specifically a woman or girl)

Because моя is feminine (мой is masculine), моя подруга clearly means “my (female) friend.” The sentence talks about a female person, so подруга is used.

Both relate to liking, but they work differently grammatically:

• любить = to love / to like

  • Она не любит работу. – She doesn’t like work.

• нравиться = to be pleasing (to someone)

  • Эта работа ей не нравится. – This job is not pleasing to her / She doesn’t like this job.

Structure difference:

• любить: subject is the person who likes
  
  • Она не любит скучную работу.
• нравиться: subject is the thing; the person is in a dative form
  
  • Скучная работа ей не нравится.

In this sentence we focus on her attitude directly, so не любит is natural.

Скучную офисную работу is in the accusative case, because it is the direct object of the verb любит (she doesn’t like what? → the job).

• Feminine singular noun работа in accusative: работу
• Feminine singular adjectives in accusative: скучная → скучную, офисная → офисную

So we get:

• (Nom.) скучная офисная работа – a boring office job (subject form)
• (Acc.) скучную офисную работу – a boring office job (object form, after любить / не любить).

For a feminine singular noun in the accusative case (and it’s inanimate, like работа), the adjectives take the ending -ую / -юю:

• новая работа → новую работу
• интересная работа → интересную работу
• скучная офисная работа → скучную офисную работу

Pattern:
-ая (nom.) → -ую (acc.)
-яя (nom.) → -юю (acc.)

Both are possible but slightly different in nuance:

• офисную работу – as a fixed type of work, “office work” in general
• работу в офисе – “work in an office,” emphasizing the location

So:
Не любит скучную офисную работу = she doesn’t like office-type jobs, the whole sphere.
Не любит скучную работу в офисе = she doesn’t like a (the) boring job that is in an office.

The original stresses the kind of job rather than where it physically happens.

Yes, you can say офисную скучную работу, and it’s grammatically correct. Word order between adjectives is flexible, but:

• скучную офисную работу sounds more neutral and natural here.
• офисную скучную работу might put a bit more stress on “office” first, then add that it’s boring.

In everyday speech, the original order is more typical.

In Russian, after мечтать (to dream), when you say “dreams of being [profession]”, you normally use мечтать + быть + instrumental:

• мечтает быть журналисткой – dreams of being a journalist

You cannot drop быть in this structure.
✗ мечтает журналисткой is ungrammatical.

You can, however, use a different construction:

• мечтает о профессии журналиста – dreams about the profession of a journalist.

Журналисткой is in the instrumental case. After the verb быть in the sense of “to be / to work as X”, professions normally appear in the instrumental:

• Она хочет быть врачом. – She wants to be a doctor.
• Он мечтает быть учителем. – He dreams of being a teacher.
• Она мечтает быть журналисткой. – She dreams of being a journalist.

The nominative журналистка would mean she already is a journalist:

• Она журналистка. – She is a journalist.

The masculine base form is журналист, feminine is журналистка; here we use журналистка in instrumental: журналисткой.

• журналист – grammatically masculine; can refer to:

  • a male journalist, or
  • a journalist of unspecified gender (especially in neutral / formal contexts).

• журналистка – grammatically feminine; refers specifically to a female journalist.

In many contexts today, people often use журналист even for women (neutral, formal). But in this sentence, because we already know the subject is female (подруга, журналисткой), using the feminine журналисткой is natural and emphasizes her gender.

Yes, both are correct, but the nuance is slightly different:

• мечтает быть журналисткой – dreams of being a journalist (more about the state itself, living as a journalist).
• мечтает стать журналисткой – dreams of becoming a journalist (focus on the process of becoming, achieving that status in the future).

In many situations they’re interchangeable, and both sound natural.

The instrumental endings differ by gender:

• Masculine noun: журналист → журналистом (instr.)
  
  • Он хочет стать журналистом. – He wants to become a journalist.
• Feminine noun: журналистка → журналисткой (instr.)
  
  • Она хочет стать журналисткой. – She wants to become a journalist.

So the pattern is consistent:

• быть / стать / работать кем? → instrumental case
• Masculine: -ом / -ем
• Feminine: -ой / -ей

Yes, that sentence is fully correct. Russian word order is relatively flexible.

• Моя подруга не любит скучную офисную работу и мечтает быть журналисткой.
  – starts from what she doesn’t like, then adds her dream.

• Моя подруга мечтает быть журналисткой и не любит скучную офисную работу.
  – starts from her dream, then mentions what she doesn’t like.

Both are natural; the choice is about what you want to emphasize first.

Literally, не любит = doesn’t like / doesn’t love. The exact strength depends on context and tone:

• In many everyday contexts, не любит is mild: just “doesn’t like very much.”
• If you want to express strong dislike (“hates”), you typically use ненавидит:
  • Она ненавидит скучную офисную работу. – She hates boring office work.

So here, не любит is closer to “doesn’t like / is not into boring office work.”

You can say не любит скучной офисной работы, but it changes the grammar and nuance:

1. не любит скучную офисную работу

   • работу is direct object in accusative.
   • Neutral, general statement: she doesn’t like boring office work.

2. не любит скучной офисной работы

   • работы is in genitive after negation (не любит чего? – “doesn’t like what?” in a more abstract or partial sense).
   • Feels a bit more “abstract / generic,” like “she doesn’t like (any / that kind of) boring office work.”

The first version (with скучную… работу) is more straightforward and typical in conversational Russian here.