Güvenlik her projede olmazsa olmaz.

Güvenlik most often means security or safety, depending on context.

In Güvenlik her projede olmazsa olmaz, the most natural translation is usually security if the project context is about software, systems, buildings, data, etc. In some contexts, it could also feel closer to safety.

It comes from güven = trust, confidence, feeling of safety, plus -lik, which makes a noun.

Because her means every, and in Turkish, her is normally followed by a singular noun, not a plural one.

So:

• her proje = every project
• her projede = in every project

Not:

• her projelerde

This is very similar to English, where we also say every project, not every projects.

The ending -de is the locative case, and it means in, at, or on, depending on context.

So:

• proje = project
• projede = in the project / in a project

With her, it becomes:

• her projede = in every project

The form is -de here because of vowel harmony and consonant harmony. After some words, you may see -da, -te, or -ta instead.

In Turkish, sentences with noun or adjective predicates often do not need an explicit verb in the present tense.

So:

• Güvenlik her projede olmazsa olmaz. = Security is indispensable in every project.

There is no separate present-tense is here, because Turkish commonly leaves it unspoken in this kind of sentence.

If needed, Turkish can use -dir for a more formal or emphatic tone, but it is often omitted in everyday language.

Literally, olmazsa olmaz is something like:

• if it doesn’t exist / if it doesn’t happen, it won’t do
• if it’s not there, it cannot be

It is built from the verb olmak = to be / to become / to happen:

• olmaz = it won’t be / it doesn’t work / it’s not possible
• olmazsa = if it isn’t / if it doesn’t happen
• olmazsa olmaz = an idiomatic fixed expression

As an idiom, it means:

• indispensable
• essential
• a must
• non-negotiable

So in this sentence, it means security is something a project absolutely must have.

Because olmazsa olmaz is a set expression in Turkish. It is not just random repetition.

The pattern creates a strong meaning: something is so necessary that without it, things simply do not work.

You should learn olmazsa olmaz as a whole phrase, because native speakers use it very naturally to mean:

• essential
• must-have
• indispensable

Examples:

• Sabır bu işin olmazsa olmazı.
  Patience is essential for this job.
• Güven olmazsa olmaz.
  Trust is indispensable.

Here it functions as the predicate of the sentence, describing güvenlik.

So in:

• Güvenlik her projede olmazsa olmaz.

olmazsa olmaz means something like essential / indispensable.

But this expression is flexible. It can also behave like a noun phrase in other sentences:

• Bu işin olmazsa olmazı deneyimdir.
  Experience is the indispensable part of this job.

So it is best to think of olmazsa olmaz as a fixed idiomatic expression that can work in more than one way.

Turkish word order is flexible, but this order is very natural.

A rough structure is:

• Güvenlik = topic/subject
• her projede = context (in every project)
• olmazsa olmaz = main comment/predicate

So the sentence presents the topic first, then gives the context, then ends with the key statement.

You could also say:

• Her projede güvenlik olmazsa olmaz.

This also sounds natural and puts a bit more focus on in every project.

No. Turkish does not use articles like a, an, or the the way English does.

So güvenlik can mean:

• security
• the security
• sometimes just the general concept of security

The exact meaning depends on context.

In this sentence, güvenlik is being used in a general sense: security as a concept.

Yes, depending on context, that could be a good translation.

A few natural English versions are:

• Security is indispensable in every project.
• Security is a must in every project.
• Every project must have security.
• Safety is essential in every project. (if the context is physical safety rather than security)

So the best English choice depends on what kind of güvenlik the speaker means.

It is quite natural and common, and it works in both everyday and professional contexts.

The phrase olmazsa olmaz is very common in spoken and written Turkish. It is not slang, but it is also not stiff or overly formal. It is a very useful expression to learn because native speakers use it often to talk about essential things.

In a business or technical setting, this sentence sounds perfectly normal.