المرشح هيقنع مسؤول التوظيف بمهاراته.

A good Egyptian-style approximation is:

el-moraššaḥ hayeʔnaʿ masʔuul et-tawziif b-mahaaraato

A few pronunciation notes:

• ق in هيقنع is usually pronounced as a glottal stop ʔ in Egyptian Arabic, so hayeʔnaʿ.
• ال before ت in التوظيف is assimilated, so you hear et-tawziif, not el-tawziif.
• The ending ـه in مهاراته is often heard as -o in Egyptian speech, so mahaaraato.

It is basically Egyptian Arabic, although most of the vocabulary is also understandable in Standard Arabic.

The clearest Egyptian feature is هيقنع:

• In Egyptian Arabic: هيقنع
• In Standard Arabic: سيُقنع or سوف يُقنع

So the sentence feels mostly straightforward in vocabulary, but the verb form makes it clearly colloquial Egyptian.

It marks the future.

The base verb here is يقنع in colloquial use, and adding هـ / حـ gives the meaning will:

• بيقنع = he convinces / he is convincing
• هيقنع = he will convince

In Egyptian writing, you may see this future marker written in different ways, especially هـ or حـ. So هيقنع and حيقنع are both common colloquial spellings.

Because subject-first word order is very common in spoken Egyptian Arabic.

So:

• المرشح هيقنع مسؤول التوظيف...
  feels natural and conversational.

In more formal Arabic, verb-first order is more common, but Egyptian speech often prefers:

• subject + verb + object

That makes this sentence very natural for everyday spoken Arabic.

Because this is an idafa structure, often called a noun construction or genitive construction.

In an idafa:

• the first noun usually does not take ال
• the second noun shows whether the whole phrase is definite or not

So:

• مسؤول توظيف = a hiring officer / a person responsible for hiring
• مسؤول التوظيف = the hiring officer / the person in charge of hiring

Even though مسؤول has no ال, the whole phrase becomes definite because التوظيف is definite.

Because ت is a sun letter.

When ال comes before a sun letter, the ل sound disappears and the next consonant is doubled in pronunciation.

So:

• written: التوظيف
• pronounced in Egyptian: et-tawziif

This is the same pattern you see in words like:

• الشمس → esh-shams
• الطالب → et-taalib

Here بـ means something like with, by means of, or through.

So بمهاراته shows the means or tool by which the candidate will do the convincing: his skills.

With verbs like يقنع, بـ is very common. It can introduce:

• what someone is convinced by
• or what someone is convinced of/about, depending on context

In this sentence, the most natural idea is that his skills are what will persuade the hiring officer.

It is the possessive suffix meaning his.

So:

• مهارات = skills
• مهاراته = his skills

In Egyptian pronunciation, ـه on a noun is often heard as -o or -u, so مهاراته sounds like mahaaraato.

It works for both.

المرشح can mean:

• a candidate in an election
• a candidate or applicant in a job or selection process

Because the sentence includes مسؤول التوظيف, the context clearly points to a job candidate.

You would usually change the noun, the verb, and the possessive pronoun:

المرشحة هتقنع مسؤول التوظيف بمهاراتها

Changes:

• المرشح → المرشحة = female candidate
• هيقنع → هتقنع = she will convince
• بمهاراته → بمهاراتها = with her skills

So this sentence is a good example of how gender agreement shows up in several places in Arabic.