الشخص ده بيشتغل في البنك.

A natural word-for-word breakdown is:

• الشخص = the person
• ده = this
• بيشتغل = works / is working
• في = in / at
• البنك = the bank

So the whole sentence means something like:

• This person works at the bank.
• Depending on context, it could also be understood as This person is working in the bank.

In Egyptian Arabic, demonstratives like ده (this, masculine) usually come after the noun.

So:

• الشخص ده = this person
• literally closer to the person this

This is very normal in Egyptian Arabic:

• الراجل ده = this man
• البنت دي = this girl

So even though the English translation puts this first, the Egyptian Arabic structure is usually noun + demonstrative.

Here, ده is a demonstrative, meaning this.

In الشخص ده, it points to a specific person:

• الشخص ده = this person

In spoken Egyptian Arabic, ده is very common and can sometimes have slightly different discourse uses, but in this sentence it is simply the normal way to say this with a masculine noun.

In Egyptian Arabic, the prefix بـ often marks the ordinary present tense.

So:

• بيشتغل = he works / he is working

The بـ is one of the big differences between Egyptian Arabic and Modern Standard Arabic.

Compare:

• Egyptian: بيشتغل
• MSA: يعمل or يشتغل

In everyday Egyptian speech, بيشتغل is the normal colloquial form for he works.

It can mean either one, depending on context.

In Egyptian Arabic, the present form with بـ can cover both:

• habitual / regular action: he works
• current ongoing action: he is working

So this sentence could mean:

• This person works at the bank
  or
• This person is working in the bank

Without more context, English often translates it as works at the bank, because that is the most natural interpretation.

في literally often means in, but with places it can also correspond to English at.

So:

• في البنك can mean in the bank
• or more naturally in this sentence, at the bank

English chooses in or at depending on what sounds natural. Arabic often just uses في for both kinds of location meanings.

البنك means the bank, while بنك means a bank.

So:

• في البنك = in/at the bank
• في بنك = in/at a bank

Arabic uses definiteness a bit differently from English, but here the sentence is specifically saying the bank. In many everyday contexts, that sounds natural if the speaker has a particular bank or a familiar institution in mind.

A common pronunciation is:

esh-shakhs da byeshtaghal fil-bank

A few notes:

• الشخص is often pronounced something like esh-shakhs because the ل of الـ assimilates before ش
• ده sounds like da
• بيشتغل sounds like byeshtaghal
• في البنك is often heard as fil-bank in connected speech

So the whole sentence flows roughly like:

esh-shakhs da byeshtaghal fil-bank

Yes, this is Egyptian Arabic.

A Modern Standard Arabic version would more likely be:

• هذا الشخص يعمل في البنك

Main differences:

• هذا الشخص instead of الشخص ده
• يعمل or sometimes يشتغل instead of بيشتغل

So the Egyptian sentence sounds natural and everyday, while the MSA version sounds more formal or written.

Yes, you can, but the meaning shifts slightly.

• الشخص ده بيشتغل في البنك = This person works at the bank
• ده بيشتغل في البنك = This one works at the bank / He works at the bank depending on context

With الشخص, you explicitly say this person. Without it, ده stands on its own more like this one.

Because الشخص is treated as a masculine noun, so the masculine demonstrative ده is used.

Compare:

• الشخص ده = this person
• البنت دي = this girl

So ده goes with masculine nouns, and دي goes with feminine nouns. Even if you are talking about a person in a general sense, الشخص itself is grammatically masculine, so ده is the expected form.

Not exactly, though they can overlap.

• بيشتغل usually means works, especially in the sense of has a job or is working
• بيعمل often means does / makes / works

In the sentence الشخص ده بيشتغل في البنك, بيشتغل is the more natural choice for talking about someone’s employment:

• He works at the bank

If you used بيعمل, it would usually suggest does or is doing, not specifically employment, unless the context made that clear.