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Paypal / Yandex GWT payments component

We need a GWT composite that would integrate with

Paypal [url removed, login to view]

and

Yandex

[url removed, login to view]

[url removed, login to view]

The composite should be self sustained, have toggle behavior between these two payment methods, and has to implement payment processing integration stack, including authorization (token acquisition for Yandex). Acquired token should be stored in memcache for the purpose of this project (it will stored in DB later after integration with the rest of the application).

A rough design is attached. Design is not as important as flawless payment processing. Payments will be accepted from users, they will specify amount in provided box, and click pay. Authorization can be implemented in two different steps, i.e. User clicks to link Yandex to this app first, and then processes the payment, as long as all the data entered by the use is preserved, and they don't have a need to reenter amount, etc...

Also, attached is the Billing component that was started but not finished (for reference)

Kỹ năng: Google App Engine, Google Web Toolkit, Java

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Về Bên Thuê:
( 1 nhận xét ) Casper, United States

Mã Dự Án: #1694275

6 freelancer đang chào giá trung bình $547 cho công việc này

IMSeriousBidder

Hello, I am senior Java developer, I have lots experience with GWT development, can you share the design document Thanks Bing

$680 USD trong 10 ngày
(58 Đánh Giá)
6.7
munawar010

Hi, I have extensive experience in Gwt, Please check PMB.

$750 USD trong 6 ngày
(1 Đánh Giá)
3.5
Leahad

PLEASE CHECK PMB

$400 USD trong 3 ngày
(0 Đánh Giá)
0.0
joyarbvt

HELLO SIR PLEASE CHECK PM

$300 USD trong 4 ngày
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R2bV85UwL

Custom Software Development - <b><i>Removed by Admin</i></b>

$750 USD trong 1 ngày
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0.0
stafona

Dear client, Please check PM. Thank you

$400 USD trong 7 ngày
(0 Đánh Giá)
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