Я подам заявку.

Подам is the 1st person singular future form of the verb подати.

• подати = a perfective verb, meaning something like to submit / to hand in
• подам = I will submit

The ending -ам here tells you it is I.

Yes, Ukrainian can often omit the subject pronoun, because the verb ending already shows the person.

So both of these are natural:

• Я подам заявку.
• Подам заявку.

Including Я can add a little emphasis, contrast, or clarity:

• Я подам заявку, а ти — ні.
  I will submit the application, but you won’t.

So Я is not wrong at all; it is just not always necessary.

Because it is the direct object of the verb, so it takes the accusative case.

The dictionary form is:

• заявка = nominative singular

But after a verb like подати, you use the accusative:

• подати заявку = to submit an application

For this noun, the feminine singular accusative changes:

• заявка → заявку

This is a very common pattern for feminine nouns ending in -а.

The basic dictionary form is заявка.

Its forms here are:

• заявка = nominative singular
• заявку = accusative singular

So if you look up the word in a dictionary, search for заявка, not заявку.

This is about aspect.

Ukrainian has two important verb aspects:

• perfective: focuses on a completed whole action
• imperfective: focuses on process, repetition, or general activity

Here:

• подати = perfective
• подавати = imperfective

So:

• Я подам заявку. = I will submit the application.
  Focus: one completed future act.

Compare:

• Я буду подавати заявку.
  This sounds more like I will be submitting an application / I will apply, with attention to the process or ongoing action.

In many everyday situations, if you mean one future completed submission, подам is the natural choice.

It presents the action as a single complete event in the future. That is what the perfective verb does.

So подам suggests:

• one act of submission
• viewed as a whole
• expected to be completed

It does not necessarily guarantee reality in the real world, but grammatically it frames the action as a completed future event.

It belongs to the aspect pair:

• подавати = imperfective
• подати = perfective

And подам is from подати.

A learner will often want to remember both together:

• подавати / подати = to submit

This is useful because Ukrainian frequently uses aspect pairs instead of a single verb form system like English.

Yes. Ukrainian word order is relatively flexible, though the most neutral order here is:

• Я подам заявку.

Other orders are possible, but they change the emphasis:

• Заявку я подам.
  Emphasis on the application
• Подам я заявку.
  Can sound marked, contrastive, or emotional depending on context

So for a learner, Я подам заявку is the safest neutral choice.

The stress is:

• Я
• пода́м
• зая́вку

A rough pronunciation guide:

• Я ≈ ya
• пода́м ≈ po-DAM
• зая́вку ≈ za-YAV-ku

A rough full approximation:

• ya po-DAM za-YAV-ku

The stressed syllables are important in Ukrainian, so it helps to learn them together with the word.

Yes, заявка is a common word for application, request, or submission, depending on context.

It is often used for:

• an application form
• an official request
• a submitted request in business or administration

In some contexts, related words may also appear, such as заява, but in this sentence заявку is perfectly normal and natural.

Yes. The exact English wording can vary depending on context.

Я подам заявку can correspond to things like:

• I will submit an application
• I’ll file an application
• I’ll turn in an application
• I’ll put in an application

The Ukrainian structure stays the same; English just offers several natural equivalents.

No. Заявку is a direct object, so no preposition is needed.

You simply say:

• подати заявку

This is different from some English expressions where the wording may vary, but in Ukrainian the standard pattern is just:

• verb + direct object

So Я подам заявку is complete as it is.