Костюмер и гримёр уже здесь.

Russian usually omits the present-tense form of to be.

So:

• Костюмер и гримёр уже здесь. literally: Costumer and makeup artist already here.

In natural English, we must say are, but in Russian the present tense of быть is normally not used in sentences like this.

If you wanted past or future, then Russian would use a form of быть:

• Костюмер и гримёр были здесь. = The costumer and the makeup artist were here.
• Костюмер и гримёр будут здесь. = ... will be here.

Уже means already.

In this sentence:

• Костюмер и гримёр уже здесь. = The costumer and the makeup artist are already here.

It often appears before the part it modifies, just like already often does in English. Here it naturally goes before здесь.

You may also hear slightly different word orders for emphasis, for example:

• Уже здесь костюмер и гримёр.
• Костюмер и гримёр здесь уже.

These are possible, but the original version sounds neutral and natural.

They are in the nominative case.

That is because they are the subject of the sentence:

• костюмер = the costumer / wardrobe person
• гримёр = the makeup artist

Since the sentence simply says who is here, both nouns stay in nominative singular.

Each noun refers to one person:

• костюмер = one costumer
• гримёр = one makeup artist

They are joined by и = and, so together they make a compound subject:

• костюмер и гримёр = the costumer and the makeup artist

Russian does not need to make each noun plural just because there are two people in total.

Yes, и here simply means and.

So:

• Костюмер и гримёр = The costumer and the makeup artist

It links two nouns in the same role. Since both nouns are subjects, they are both in the nominative.

The correct spelling is гримёр, with ё.

That matters because ё shows both:

• the pronunciation
• the stress

So гримёр is stressed on the last syllable.

In many printed texts, Russians often replace ё with е, so you may see гример. But the intended word is still pronounced гримёр.

For learners, keeping ё is very helpful.

A simple learner-friendly approximation is:

• костюмер ≈ kas-tyu-MYER
• гримёр ≈ gree-MYOR

A few useful notes:

• ю in костюмер gives a y/u sound after т: тю
• ё in гримёр sounds like yo
• The stress is:
  • костюме́р
  • гримёр

If you want to sound more natural, make sure the stress is in the right place.

Yes, здесь means here.

Russian also has тут, which often also means here. In many everyday contexts, they are interchangeable:

• Костюмер и гримёр уже здесь.
• Костюмер и гримёр уже тут.

Both are natural.

Very roughly:

• здесь can sound a little more neutral or standard
• тут can sound a little more conversational

But in many situations, the difference is small.

Both are grammatically masculine because they end in a consonant:

• костюмер
• гримёр

That is a very common pattern for masculine nouns in Russian.

These words usually refer to professions. Depending on context, they may refer to male workers, or sometimes masculine profession nouns may be used generically. But grammatically, these dictionary forms are masculine.

Yes. Russian word order is more flexible than English word order.

The neutral version is:

• Костюмер и гримёр уже здесь.

But you could move things around for emphasis:

• Уже здесь костюмер и гримёр.
• Здесь уже костюмер и гримёр.
• Костюмер и гримёр здесь уже.

These all suggest slightly different focus or rhythm, but the basic meaning stays similar.

For a learner, the original order is the safest and most neutral one to use.

No. Russian has no articles like English a and the.

So:

• Костюмер can mean a costumer or the costumer
• гримёр can mean a makeup artist or the makeup artist

You understand which one is meant from context.

In this sentence, English will usually need an article, but Russian does not.

No, that would sound incomplete in English.

A literal word-for-word breakdown can help you understand the Russian structure:

• Костюмер = costumer
• и = and
• гримёр = makeup artist
• уже = already
• здесь = here

But natural English needs are:

• The costumer and the makeup artist are already here.

So the Russian sentence structure is normal for Russian, even though it looks incomplete if copied directly into English.