Я часто общаюсь с ними после работы.

Общаюсь is the 1st person singular present tense form of the verb общаться.

So:

• общаться = to communicate, to interact, to socialize, to keep in touch
• я общаюсь = I communicate / I socialize / I keep in touch

In this sentence, it most naturally means something like:

• I often talk with them after work
• I often socialize with them after work

The exact English translation depends on context, but общаться is broader than just to speak. It suggests ongoing interaction, not just saying a few words.

Because общаться is a reflexive verb, ending in -ся in its dictionary form.

When it is conjugated with я, the ending becomes:

• общаться → я общаюсь

This breaks down roughly as:

• общаю = the verb stem + 1st person ending
• -сь = the reflexive particle

Many Russian verbs that describe interaction or states use -ся. With общаться, the reflexive form is the normal one.

A few present-tense forms are:

• я общаюсь = I communicate
• ты общаешься = you communicate
• он/она общается = he/she communicates
• мы общаемся = we communicate
• вы общаетесь = you communicate
• они общаются = they communicate

Because the verb here uses the pattern:

• общаться с кем? = to communicate with someone

The preposition с means with, and after с in this meaning, Russian uses the instrumental case.

So:

• они = they
• ними = them (instrumental form)
• с ними = with them

You cannot say общаюсь их here, because их is not the form required by с.

Compare:

• Я говорю с другом. = I am speaking with a friend.
• Я общаюсь с ними. = I communicate/socialize with them.

Russian personal pronouns change form by case.

For они:

• nominative: они = they
• genitive/accusative: их
• dative: им
• instrumental: ими
• prepositional: них

After some prepositions, an extra н- appears in pronoun forms. That is why after с you get:

• с ними = with them

instead of just с ими

This н- is very common after prepositions:

• у них = at their place / they have
• к ним = to them
• с ними = with them
• о них = about them

Because the preposition после requires the genitive case.

So:

• работа = work (dictionary form, nominative)
• после работы = after work

Here работы is the genitive singular form of работа.

This is a very common pattern:

• после урока = after class
• после фильма = after the movie
• после обеда = after lunch
• после работы = after work

So the rule is:

• после + genitive

Usually it means after work, in the general everyday sense.

In English, we often say after work without an article, and Russian does the same kind of thing here:

• после работы = after work / after getting off work

Depending on context, it can mean:

• after the workday
• after one’s job for the day
• after finishing work

It does not usually sound like after the work in a specific, narrow sense unless the context makes it specific.

Yes, Russian word order is flexible.

The sentence:

• Я часто общаюсь с ними после работы.

is a neutral, natural way to say it.

Here:

• Я = I
• часто = often
• общаюсь = communicate/socialize
• с ними = with them
• после работы = after work

You can move parts around for emphasis, for example:

• После работы я часто общаюсь с ними.
• Я с ними часто общаюсь после работы.
• С ними я часто общаюсь после работы.

These all mean roughly the same thing, but the emphasis changes.

A learner should usually start with the neutral order and only later worry about stylistic differences.

Not exactly.

• говорить = to speak, to say
• разговаривать = to talk, to converse
• общаться = to communicate, interact, socialize, keep in touch

So общаться is broader.

For example:

• Я разговариваю с ними focuses on the act of talking.
• Я общаюсь с ними can mean I talk with them, spend time interacting with them, or stay in contact with them.

In this sentence, общаюсь suggests regular interaction after work, not just a brief exchange of words.

In Russian, the present tense is also used for habitual actions.

So:

• Я часто общаюсь с ними после работы.

means:

• I often communicate with them after work
• I often talk to them after work
• I often socialize with them after work

Even though it is present tense grammatically, it describes something that happens regularly.

This is very normal in both Russian and English:

• I go there every day.
• Я хожу туда каждый день.

It is imperfective because the sentence describes a repeated, habitual action.

• общаться = imperfective

That fits with часто because often suggests repetition.

Russian usually uses the imperfective for:

• habits
• repeated actions
• ongoing processes
• general facts

A perfective partner is less straightforward here than with some other verbs, because общаться is commonly used as the normal verb for this idea. In everyday speech, learners should focus on using общаться for repeated communication or social interaction.

So the important point is:

• часто
  • habitual meaning → общаться is the natural choice

A natural pronunciation is approximately:

• Я ча́сто обща́юсь с ни́ми по́сле рабо́ты.

Main stress points:

• ча́сто
• обща́юсь
• ни́ми
• по́сле
• рабо́ты

A rough English-style pronunciation guide:

• ya CHAS-ta ab-SHÁ-yus' s NEE-mi POS-le ra-BO-ty

A few notes:

• я sounds like ya
• общаюсь contains the щ sound, which is softer and longer than English sh
• the final -сь is soft

If you say it slowly and clearly, you will be understood even before your pronunciation becomes fully natural.

Yes, sometimes.

Russian often drops the subject pronoun when it is clear from the verb ending:

• Часто общаюсь с ними после работы.

This still clearly means I often communicate/socialize with them after work, because общаюсь already tells you the subject is я.

However:

• Я часто общаюсь с ними после работы.

is also completely natural, especially for learners, for clarity, or when you want to emphasize I.

So both are correct:

• Я часто общаюсь с ними после работы.
• Часто общаюсь с ними после работы.