Eu vou ligar para o técnico agora.

Yes. In Brazilian Portuguese, subject pronouns are often optional when the verb already makes the subject clear.

• Eu vou ligar para o técnico agora. = perfectly correct
• Vou ligar para o técnico agora. = also perfectly natural

Including eu can add emphasis, contrast, or clarity. For example, you might say Eu vou ligar if you want to stress that I am the one who will call.

Vou ligar is the very common near future structure in Portuguese:

• vou = I go / I am going
• ligar = to call

So literally it looks like I am going to call, and that is exactly how it works grammatically.

Brazilian Portuguese very often uses:

• ir + infinitive

to talk about the future.

So:

• Eu vou ligar = I’m going to call / I will call

There is also a simple future form:

• Eu ligarei

But in everyday Brazilian speech, vou ligar is much more common and natural.

No. Ligar can have more than one meaning depending on the context.

Common meanings include:

• to call (someone)
• to turn on a device

For example:

• Vou ligar para minha mãe. = I’m going to call my mom.
• Vou ligar a televisão. = I’m going to turn on the TV.

In your sentence, ligar para o técnico clearly means to call the technician, because the verb is followed by para + person.

When ligar means to call someone, Brazilian Portuguese commonly uses:

• ligar para alguém

So:

• ligar para o técnico = to call the technician

This is the normal pattern in Brazil.

In everyday spoken Brazilian Portuguese, para is often shortened:

• para o → pro
• para a → pra

So a very natural spoken version is:

• Eu vou ligar pro técnico agora.

That means exactly the same thing.

Usually, no.

With the meaning to call someone on the phone, Brazilian Portuguese normally uses:

• ligar para alguém

So the natural version is:

• ligar para o técnico
• or in speech, ligar pro técnico

Using a / ao with ligar is not the usual modern Brazilian pattern for this meaning.

The article o means the, so o técnico means the technician.

Portuguese uses articles more often than English does. Here, o técnico suggests a specific technician that both speaker and listener already know about, such as:

• the repair technician
• the computer technician
• the technician who was supposed to come

If you said:

• um técnico

that would mean a technician, not a specific one.

Here, técnico most naturally means technician or repair person.

Depending on context, it could refer to someone who works with:

• appliances
• internet/cable
• computers
• electronics
• maintenance or repairs

It can also mean coach in sports contexts, but not in this sentence. Because of ligar para o técnico, the likely meaning is a technician or repair professional.

The accent mark in técnico shows the stressed syllable.

It is pronounced roughly like:

• TEH-knee-koo

The stress falls on the first syllable:

• TÉC-ni-co

Without the accent, Portuguese spelling rules would suggest a different stress pattern, so the accent is necessary.

Yes, agora can move around.

Your sentence:

• Eu vou ligar para o técnico agora.

is completely natural and means I’m going to call the technician now.

You can also say:

• Agora eu vou ligar para o técnico.
• Eu agora vou ligar para o técnico.

All are possible, but they can sound slightly different in rhythm or emphasis.

The version with agora at the end is very common and natural in conversation.

It is neutral and perfectly normal.

• Eu vou ligar para o técnico agora. = standard, clear, natural
• Eu vou ligar pro técnico agora. = more conversational, very common in speech

So if you are speaking casually in Brazil, pro is extremely common. If you want a more careful or textbook-style version, para o is great.

In careful speech, it is para.

But in everyday Brazilian Portuguese, speakers often reduce it:

• para o → pro
• para a → pra

So although the written sentence is:

• Eu vou ligar para o técnico agora

you will very often hear:

• Eu vou ligar pro técnico agora

That is one of the most useful spoken contractions to recognize.

Yes. Telefonar also means to call by phone.

So you could say:

• Eu vou telefonar para o técnico agora.

That is correct. But in everyday Brazilian Portuguese, ligar is usually more common and more natural in casual conversation.

So:

• ligar para alguém = very common
• telefonar para alguém = correct, slightly less common in everyday speech

A very natural spoken version would be:

• Vou ligar pro técnico agora.

What changed?

• Eu was dropped because the verb already shows the subject
• para o became pro, which is extremely common in speech

This version is not more correct than the original—it is just more conversational.