Quiero demostrar en la entrevista que puedo trabajar con calma y en equipo.

In Spanish, the subject pronoun is often omitted because the verb ending already shows who is doing the action.

• Quiero = I want
• The ending -o tells you it is I

So Quiero demostrar... is completely natural. You can say Yo quiero demostrar..., but adding yo usually gives extra emphasis, like I want to show...

Because after a conjugated verb like quiero, Spanish usually uses an infinitive for the next verb.

• Quiero demostrar = I want to show/prove
• Literally: I want to demonstrate

This is the same pattern as:

• Quiero trabajar = I want to work
• Necesito estudiar = I need to study
• Puedo ayudar = I can help

So demostrar stays in the infinitive because quiero is already the conjugated verb.

Here demostrar can feel like show or prove, depending on context.

In a job interview, demostrar often means:

• to show clearly
• to demonstrate
• to prove through your attitude or answers

So in this sentence, it is not necessarily a dramatic prove. It is more like show the interviewer that I am capable of...

En la entrevista means in the interview or during the interview.

Spanish often uses en where English might use:

• in
• at
• during

So:

• en la entrevista = in/during the interview

It places the action in that context: the speaker wants to show this during the interview.

La entrevista refers to a specific interview, not just any interview.

• en la entrevista = in the interview / during the interview
• en una entrevista = in an interview / during an interview

If the speaker is talking about a particular interview they are going to attend, la entrevista makes perfect sense.

The structure demostrar que... means to show/prove that...

So the sentence is built like this:

• Quiero demostrar = I want to show
• que puedo trabajar... = that I can work...

This is a very common Spanish structure:

• Sé que... = I know that...
• Creo que... = I believe that...
• Demostrar que... = to show that...

Because this sentence uses the indicative, not the subjunctive.

Quiero demostrar que puedo trabajar... presents I can work... as something real or true that the speaker wants to show.

The subjunctive would not normally be used here because demostrar que usually points to a fact or supposed fact, not something uncertain in this structure.

So:

• que puedo trabajar = that I can work

That is the normal choice here.

Because modal verbs like poder are followed by an infinitive.

• puedo trabajar = I can work

This is just like:

• puedo estudiar = I can study
• puedo hacerlo = I can do it

So puedo is conjugated, and trabajar stays in the infinitive.

Con calma means something like:

• calmly
• without rushing
• in a composed way

Literally, it is with calm. Spanish often uses a noun phrase where English uses an adverb.

So:

• trabajar con calma = to work calmly / to work in a calm way

It suggests the person can stay composed and not panic.

Yes, you could say trabajar tranquilamente, but it is not exactly the same in tone.

• con calma suggests calmness, composure, and not rushing
• tranquilamente suggests peacefully or calmly, but can sound a bit different depending on context

In a job-interview sentence, con calma sounds very natural and idiomatic. It emphasizes keeping calm under pressure.

En equipo means as a team or in a team.

It is a fixed expression in Spanish:

• trabajar en equipo = to work as part of a team / to work in a team

There is no article because this expression is used generally, not to refer to one specific team.

Compare:

• Trabajo en equipo = I work well in a team / I do teamwork
• Trabajo en el equipo = I work on the team / in the specific team

So en equipo is the correct phrase here.

Yes. Both phrases describe how the person can work.

• trabajar con calma = work calmly
• trabajar en equipo = work as part of a team

So the sentence means the speaker wants to show that they can work:

• calmly
• and as part of a team

Both ideas are linked to trabajar.

Because Spanish, like English, often avoids repeating a verb when one verb can clearly apply to both parts.

So:

• puedo trabajar con calma y en equipo

is a natural, efficient way to say:

• I can work calmly and in a team

Repeating trabajar would sound unnecessary unless you wanted strong emphasis.

Yes, Spanish word order is somewhat flexible, but this version is very natural.

Quiero demostrar en la entrevista que puedo trabajar con calma y en equipo clearly means:

• during the interview, I want to show
• that I can work calmly and in a team

You might also hear:

• Quiero demostrar que puedo trabajar con calma y en equipo en la entrevista

But that version can sound a little less clear, because en la entrevista might seem attached to trabajar rather than demostrar. The original sentence places it in a very natural spot.

Yes, it is natural and appropriate. It sounds clear and professional.

Useful points:

• Quiero demostrar... sounds purposeful and professional
• con calma suggests emotional control
• en equipo is a very common skill in workplace Spanish

So the sentence works well in a job-interview context.