Learn Hardcore Korean: gyeongheomi eobsgineun hajiman hal su isseo.

-기는 is a combination of the nominalizer -기 and the contrast/topic marker -는. It adds an “admitting/indeed” nuance: “It’s true that (I) don’t have…”
So 경험이 없기는… sets up a concession: “I do lack experience, (but) …”
It’s often used to acknowledge something before contrasting it with the next clause.

Do I have to use 하지만 if I already used -기는?

No. -기는 already suggests a contrast. You have options:
- Keep both for emphasis: 경험이 없기는 하지만 할 수 있어. (original)
- Attach the contrast directly: 경험이 없긴 하지만 할 수 있어.
- Use another linker: 경험이 없기는 해도 할 수 있어.
- Split into two sentences: 경험이 없기는 해. 하지만 할 수 있어.
Using both -기는 and 하지만 just makes the concession very explicit/natural.

How is 없기는 하지만 different from 없지만 or 없긴 한데?

없지만: plain “although,” neutral.
없기는 하지만 / 없긴 하지만: “It’s true I don’t have…, but …” (admitting tone).
없긴 한데: very conversational, trailing “though…” that invites or implies a follow-up.

Why is it 경험이 and not 경험은? Can I say 경험은 없지만?

With 있다/없다, the thing that exists/doesn’t exist is usually marked with 이/가: 경험이 없다 (“experience doesn’t exist” → “I don’t have experience”).
You can say 경험은 없지만 할 수 있어. Using 은/는 puts contrastive focus on “experience” as a topic (“As for experience, I don’t have it, but…”).
In 경험이 없기는 하지만, the contrast is already carried by -기는, so 이/가 is natural. Both are fine; the nuance differs slightly.

Why is there no “I” in the sentence? Who is the subject?

Korean often drops obvious subjects. Here, 할 수 있어 implies the speaker’s ability, so “I” is understood.
You can include it if needed:
- Casual: 나는 경험이 없기는 하지만 할 수 있어.
- Polite: 저는 경험이 없기는 하지만 할 수 있어요. / 저는… 할 수 있습니다.

What exactly is 할 수 있어 grammatically?

It’s the ability/possibility pattern V-(으)ㄹ 수 있다: “can V.”
- 할: the noun-modifying (prospective) form of 하다.
- 수: a bound noun meaning “way/means/possibility.”
- 있어: informal present of 있다 (“there is/exists”).
Literal sense: “There exists a way/possibility to do (it)” → “I can do (it).”
Negative: 할 수 없어 (“can’t do it”).

Is it 할수 or 할 수? How about spacing for this pattern?

Always write it spaced: V-(으)ㄹ 수 있다/없다 → 할 수 있어/없어.
수 is a dependent/bound noun, so it takes a space before it. Writing 할수있어 is incorrect.

Can I use -ㄹ 줄 알다 instead of -ㄹ 수 있다?

V-(으)ㄹ 수 있다 = can/be able to (possibility, permission, circumstance, capability).
V-(으)ㄹ 줄 알다 = know how to (skill/knowledge).
They overlap sometimes but differ:
- 운전할 줄 알아요 = I know how to drive.
- 오늘은 차가 없어서 운전할 수 없어요 = I can’t drive today (circumstances), even if I know how.
Your sentence uses general ability/assurance, so 할 수 있어 is the natural choice.

How do I change the politeness level?

Casual (given): 경험이 없기는 하지만 할 수 있어.
Polite standard: 경험이 없기는 하지만 할 수 있어요.
Formal: 경험이 없기는 하지만 할 수 있습니다.
Match politeness across the conversation (don’t mix levels unless there’s a reason).

Can I reverse the order, like “I can do it, although I lack experience”?

Yes, especially in speech/afterthoughts:
- Casual: 할 수 있어, 경험이 없기는 하지만.
- Polite: 할 수 있어요. 경험이 없기는 하지만.
Ending with -지만/한데/해도 as an afterthought is common in conversation.

How is 하지만 different from 근데/그런데 here?

하지만: neutral/formal “but/however,” good in writing or careful speech.
그런데/근데: more conversational; can also mean “by the way” depending on context.
Natural colloquial variant: 경험이 없긴 한데 할 수 있어.

How do you pronounce the sentence naturally?

Careful romanization: eop-gi-neun hajiman hal su isseo.
Natural phonetic tips:
- 없기는 → often 업끼는 (the ㄱ in 기 is tensed).
- 할 수 → often sounds like 할 쑤 (ㅅ can tense after ㄹ in fast speech).
- 있어 → 이써.
So one natural reading is roughly: 업끼는 하지만 할 쑤 이써.

Why not say 안 있어 for “don’t have”? Why use 없다?

The negative counterpart of 있다 (to exist/have) is the separate verb 없다, not 안 있다.
So you say 경험이 없다/없어요, not 경험이 안 있어.