Create joomla Extension (Tender List)

You have to work on a existing joomla website, the site has been heavy modified, I'm expecting an expert to do it. It is a list of tender and the result, all is editable at the back end. You have to develop 2 tender list, 1 is call Jadual Tender and Jadual Sebutharga, both has the same field and value, 14 projects a page, the 15th will be on the next page, please have the number at the bottom of the page to indicate that. Click 1 of the title you will go in to the project itself, then you have project number, project name, closing date, type of project and class of project. all in simple field but wysiwyg for class of project . Then at the bottom will have a table of 3 columns, as the picture, with the title of bil = no, Harga = price, tempoh siap kerja = period of time, the title is fix but the result is able to edit at the back end. Again, 14 a page, then 15th goes to the second page and the number of pages indicate at the bottom. then another page call the result of tender, as you can see again 3 columns that can indicate the tender number, tender name and company who has won the project, it is editable at the back end also. It is actually a simple job, just need to create fields to be filled, the problem is it's not in English, I will assist the translation if needs help anytime. The purpose is actually the want to create a 2 tender list and the details of the tender and result of tender. I have attached 2 pictures but I have a few more, it is much better if i can pass out all