I assume that you already know that Korean sentences have different word orders. "~게끔" means "a purpose" of the latter part of the sentence, usually. "끔" is just for emphasis here. In most cases, you can instead say "~게". "~게끔" can be translated into English in several ways, because in English, there are many similar expressions to say a purpose like "for ... ", "to ..", "in order to..", ".. so that ...", etc. For example, 책꽂이의 저 책을 꺼낼 수 있게끔(or 있게, 있도록), 사다리를 빌려주세요. Please let me borrow your ladder so that I can reach the books on the book shelf and pull them out. 늦지 않게끔, 서둘러라. = 늦지 않게, 서둘러라. = 늦지 않도록, 서둘러라. You'd better hurry up not to be late.

That's right. When you say "되겠구나" at the end of the sentence, it means you have a strong guess or belief about what you're saying. 열심히 공부하는 모습을 보니, 넌 나중에 훌륭한 사람이 되겠구나. => Looking at you studying really hard, I think you can become a great person in the future. 함께 하는 걸 보니, 그들은 결국 결혼하게 되겠구나. => As I see them together, they seem to end up getting married soon.

It's not clear to me what "defend the truth" means without context. If you wanted to say "stand for the truth", I would say in Korean, "진실을 지키려는 언니의 노력에 감사해요~"

There are ways you can express it in Korean, and if we say it in Korean with literal translation, it doesn't sound the same as you want to express your feeling. The first sentence of each line is when you talk to your friend and the second is formal or a respectful way of saying. 네 덕분에 오늘에 내가 되었어. (당신 덕분에 오늘에 제가 되었어요) 너로 인해 지금의 내가 되었어. (당신 덕분에 지금의 제가 되었어요) 오늘의(지금의) 나는 모두 네 덕분이야. (오늘의 나는 모두 당신 덕분이에요) 너의 도움이 없었으면, 오늘의 나도 없었을거야. (당신의 도움이 없었으면, 오늘의 저도 없었을 거예요) If you specifically refer to someone, you should replace the word "당신" with a proper one. for example, if the person is your teacher, you can say "선생님" instead of "당신". Also note that there are not many situations where we call someone as "당신" unless you are a little old married person and call your wife. ** If you have that kind of person you like to say it to, it would be awesome.~~

• Providing service to customers (고객 서비스 제공) • Creating a new portfolio of customers (고객을 위한 새로운 포트폴리오 작성) • Doing market research and determining potential customer (시장조사 및 잠재고객 결정) • Presenting product to customers (상품 프리젠테이션 진행) • Organizing installation of product (상품 셋팅 관리) • making out invoices (인보이스 발송) In my opinion, the first sentence is a little vague for your CV, since "providing service" can be anything that matters. I think it would be better if you specify more clearly.

허가 is something that you gain from the government or any organizations related to legal procedures, whereas 허락 is usually freedom to do something that your parents, teachers, or any other people give you. 새로운 집을 짓기 위해 정부에서 허가를 받았다. 파티에 가기 위해서 부모님 허락을 받았다.

It means "arise" or "emerge" Translation of your sentence is challenging, but let me try. => There is a criticism arising that the prejudice coming from the fact that the victim of the scandal is a prostitute has impacted. It will be appreciated it if anybody can make my sentence correct or edit it to make better sense.

Vivek, thanks a lot for your comment and advice. 

I will take it into consideration and email to you if I need your advice.

Wish you a success in your learning~!