Web chat with payments, account mgmt, transportation and travel APIs search and book features

We are creating a web app with payment gateways (stripe), web chat to be used for customers to enquire us and human operators to fulfill their requests and such requests involve API calls to find flights, trains, hotels. All customer data acquired from the chats and saved by themselves on their profiles need to be accessible for analytics. For some examples of how it should look like and a feel for the complexity see the pics below.

For UI design: not needed as we are just using the web app within web views. We will provide logos and colors.

The routing of messages of interest shall be done via a centralised notification management system like [url removed, login to view] or similar (you should propose the right solution here).

Backend running on Google App Engine and PostgreSQL running on Google Cloud SQL.

Some things we'd like to know from your proposal of are:

- Message queueing strategy?

- How to provide real time messages on the chat?

- Best way to integrate APIs for all tansportsations and accommodations services? e.g. tradeoffs when using single API for everything like expedia vs lufthansa api and emirates API and so on

Please, along with a suggestion for the above, provide:

- project estimated length,

- some pieces of tech needed for sure,

- approx. cost

- most time consuming part

Skills: jQuery / Prototype, PostgreSQL, Software Architecture, SQL, Web Services

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About the Employer:
( 0 reviews ) Germany

Project ID: #16407076

8 freelancers are bidding on average €26/hour for this job


Hello, I have read the brief project description and understood the requirement. I am very much familiar to the functionality and I have used in my hotel channel manager PMS project. Though most the features seems a More

€25 EUR / hour
(48 Reviews)

Hello , I think it is a very happy thing to have a challenge and I would like to thank you for giving me such an opportunity. I have just read your project description and [login to view URL] very carefully. Now I feel to More

€25 EUR / hour
(10 Reviews)

We make your vision our mission by providing smart digital solutions. We are eager to get to know you and your project details further over a quick chat. Some of our design/development works are mentioned below to asse More

€35 EUR / hour
(8 Reviews)

Hi, We integrate all the API for booking hotels, accommodations, flight, car and even train ticket reservation. We have also experience of integrating bus booking API. [login to view URL] http://travelcritix More

€18 EUR / hour
(6 Reviews)

Hello >>Some things we'd like to know from your proposal of are:<< >>Please, along with a suggestion for the above, provide<< - no offense but I'd like to give this info in a chat because when you are logged out you More

€22 EUR / hour
(5 Reviews)

Hi, I am expert in JavaScript, HTML, CSS, and PHP. Creating the website, managing website, fixing bugs etc. having the specialty in custom website design you check in my portfolio. These are some of mine design, de More

€20 EUR / hour
(0 Reviews)

Hello , We have ready made solution for wallet .Please have a look [login to view URL] We are having a great team of Mobile developers with 7-8 years of experience in their field, We work with fully enthusiasm. More

€30 EUR / hour
(0 Reviews)

Hi There, Read your project requirements. I am an expert in, mvc, angular js, extjs, I can play role of architect, manager/scrum master and also as an full stack developer including rest based webapi, sql, bu More

€30 EUR / hour
(0 Reviews)