Inventory and Point of sales System

Avg Bid (USD)
Project Budget (USD)
$1000 - $5000

Project Description:
First of all, the software has to be in Spanish! I'm bilingual though
I want to create both an Inventory System and a Point of sales system. I have a warehouse with perfumes, clothing and accessories.

I manage 20 physical stores in Costa Rica. I want an inventory system for the warehouse and a POS system for the stores and for the main warehouse too (sometime wholesalers purchase directly from the main warehouse)
It has to be both offline and online. I will like it to be online, but if internet goes down, I will like to be able to keep using it and when internet is back, just click a button and update the database with the data that was entered while offline. (This is a key feature).

CVS should be enable for as much things as possible.
It has to be 100% responsive.
The Point of sales interface should look like this:
Pass: 12345678
We will like that to be the interface the sales staff watches, the sales staff should not be able to access any admin info, they should only be able to enter sales, and watch a product list with sales prices.
I should be able to create as many stores as I want, I should be able to see each store individually, and each store should have their own inventory. I should be able to transfer inventory from main warehouse to the stores with ease. Pretty much a copy of the POS software stated in the link but be it is licensed.

It should have a page where I can record expenses. Some of them should be able to be program automatically like: Salaries, rent, electricity, etc.
But also one time occasions, like: Printer paper.

Product details required:
Quantity alert
Warehouse or store
Sub Category
Sub-Sub Category
Sale Price
Cost Price
Purchase Price
Suppliers: Suppliers info, it should record the last price from that supplier and every purchase should be recorded in there.
The main warehouse should be as close as possible to
a. There should be purchased orders with different levels on the purchase process: Pay, received in customs, received in warehouse:
I should be able to add expenses at each point: Like transportation, custom taxes and customized fields to enter descriptions and the expenses.
b. The main warehouse should have its own POS system in case a wholesaler comes and buy directly from the warehouse. (That POS should be somewhat different from the stores, since it should display more categories) It should also be able to enter sales via CVS. It is important I can print a list of products displaying their BIN location for the warehouse employees to be able to go a pick up the products.
c. It should have some features to make inventory check. Scan a barcode, choose a location and see how many are supposed to be there.
d. I should be able to transfer stock from main warehouse to other stores and viceversa.
e. I should be able to see what orders were paid in full and which orders are still missing a payments.

Inflow features can be found here:
Ignore any assemble features, since we only store and sale.

I should be able to create a different bill to each store, I should be able to manage discounts, and taxes on the bill).

Reports (We can negotiate the amount of reports that can be implemented) This is the full list of reports:

We need it by January 5th. I will be working side by side with the developer the whole time. Skype is a most! I will choose who to work with by the 5th day of this publication. Please bid with as much details about the project as possible.

Additional Project Description:
11/15/2013 at 13:45 CET

you can you see the POS module

Skills required:
Engineering, HTML5, PHP, Software Architecture
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