gōngsī zhèngzài zhāopìn quánzhí gǎngwèi.

Chinese normally does not use articles like a, an, or the.

So 公司 can mean:

• a company
• the company
• sometimes just company/companies in a general sense

The exact meaning comes from context. In this sentence, English would usually translate it as The company is recruiting... or The company is hiring...

正在 marks an action as being in progress right now. It is similar to the English idea of is/are doing.

So:

• 公司招聘全职岗位 = The company recruits / is recruiting full-time positions depending on context
• 公司正在招聘全职岗位 = The company is currently recruiting...

It adds a clear sense of ongoing action at this moment.

Both can mark an ongoing action, but 正在 is usually a little more explicit and emphatic.

• 公司在招聘... = the company is recruiting...
• 公司正在招聘... = the company is actively / currently recruiting...

In many situations, both are fine. 正在 often sounds slightly more formal or more clearly focused on the action being in progress.

The pattern is:

Subject + 正在 + Verb + Object

So here:

• 公司 = subject
• 正在 = progressive marker
• 招聘 = verb
• 全职岗位 = object

That makes the sentence easy to read as:

The company + is currently + recruiting + full-time positions

Not exactly.

招聘 usually means to recruit or to advertise and seek applicants. It focuses on the process of looking for people.

English hire can sometimes imply the company has already chosen someone and given them the job. Chinese has other words for that idea, such as:

• 录用 = to officially accept/select someone for a job
• 雇用 = to employ

So 招聘 is often best understood as recruiting rather than completed hiring.

全职 means full-time.
岗位 means post, role, or position.

Together, 全职岗位 means full-time position(s) or full-time role(s).

Here, 全职 directly modifies 岗位, just like full-time modifies position in English.

They are similar, but not identical.

• 岗位: a post/role in an organization; often used in HR or workplace language
• 职位: a position/title, often a little more formal
• 工作: work or job in a broader, everyday sense

So:

• 岗位 often sounds like a specific opening or role
• 职位 can sound more formal or administrative
• 工作 is the broadest and most common everyday word

In job ads, both 岗位 and 职位 are very common.

Chinese nouns usually do not change form for singular vs. plural.

So 岗位 could mean:

• a position
• positions

You learn the number from context.

In English, we often make it plural in translation if the situation suggests that the company has multiple openings. If you want to make the number clearer in Chinese, you can add something like:

• 一个全职岗位 = one full-time position
• 多个全职岗位 = multiple full-time positions

It is understandable, but it may sound a little less natural than some other options, depending on what exactly you want to say.

If you mean the company is hiring full-time employees, a more natural sentence is:

• 公司正在招聘全职员工。

If you mean the company has full-time openings, you might also see things like:

• 公司正在招聘多个全职岗位。
• 公司目前开放全职岗位。

So the original sentence is understandable, especially in an HR context, but many native speakers would choose a slightly different wording.

Because 正在 already shows that the action is ongoing.

• 正在招聘 = is recruiting right now

If you add 了, the meaning changes:

• 招聘了 often suggests the recruiting action has happened or been completed in some way

And 着 is generally not used naturally here:

• 招聘着 sounds unnatural in this sentence

So 正在招聘 is the normal way to express an action currently in progress.