Mobile Xamarin / C# Web services / Social Media

Đã Đóng

Extending a mobile app for Android and iOS plaforms using Xamarin and C#. The project also involves creating c# web services or c# cloud services to communicate to the mobile app and third party api's. Designing a back-end database using SQL Azure. The mobile app will communicate with a number of web services also and integrating to various social media providers using their native api's from the mobile app. Sending messages to api's need to be verified. The app should also make use of multi-threading wherever practical. Highly optimisied code and fast response times are a must.

General Requirements

1. 100% Fluent English (read, write and speak). All Communications in English in a clear and precise manner.

2. Work from written specifications, but also capable of making own decisions and on own initiative when required.

3. Able to easily adapt to changes in user specifications from one development phase to another.

5. Provide clean concise code.

6. Fully familiar in reading API documentation and recognising pitfalls.

7. Provide fully tested app deliverables.

Technical Requirements

1. 100% familiarity with Xamarin, C#, Cloud/ASP/MVC Web Service technologies.

2. Experience in interfacing with SecureTrading API's for credit card authorisation

3. Experience in handling the OAuth/OAuth protocols from within a Xamarin mobile application.

4. Experience in interfacing with Native social media API's, Facebook, Twitter, LinkedIn and Instagram to send messages to a users wall.

5. Experience in dealing with XML/HTTPS Api's to a custom Host from within a Xamarin mobile app.

6. Experience in communicating Xamarin to own web service running as Azure cloud service or IIS web service.

7. Creating Azure Cloud or IIS web services to send and receive data from the mobile app. CRUD.

8. Creating Azure Cloud or IIS web services to send and receive data from another api (XML). CRUD.

9. Full understanding and implementation experience of multi-threading in a Xamarin App.

Kỹ năng: Lập trình C#, Microsoft SQL Server, Điện thoại di động, An ninh Web, Xamarin

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Mã Dự Án: #14355478

98 freelancer đang chào giá trung bình €8125 cho công việc này


Hi I'm a Xamarin developer. I have 4 years experience with Xamarin. Also I'm very familiar with creating C# web service and SQL Azure. Please check my skill. Thêm

€10000 EUR trong 70 ngày
(172 Đánh Giá)

Hi, I've read the details you mentioned and I'm interested in working on this project! I will provide you final time and cost estimate, Once we discuss everything over chat. Relevant Skills and Experience Please have Thêm

€8823 EUR trong 30 ngày
(188 Đánh Giá)

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€9058 EUR trong 40 ngày
(25 Đánh Giá)

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€5294 EUR trong 30 ngày
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mobileservice001 here is my proposal Relevant Skills and Experience object C, Xamarin Proposed Milestones €8333 EUR - Milestone

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monoLancer Relevant Skills and Experience ObjectC, Swift, Xamarin Proposed Milestones €8333 EUR - Milestone

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€8823 EUR trong 30 ngày
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€9278 EUR trong 30 ngày
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30+ team including 22 full time Mobile apps developers. In short, if you need a team who offers *real English* communication, optimized code, AND in time and within the budget, then we are the choice. Relevant Skills Thêm

€8000 EUR trong 30 ngày
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€6000 EUR trong 30 ngày
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Hello Matthew, I'd like to get further insight into actual features of the app to recommend whether Xamarin would be a good choice for that stable app.As recently we came across many clients who had problems with Xa Thêm

€14000 EUR trong 50 ngày
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€8000 EUR trong 90 ngày
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Hello, I m fulltime available for work , I have 5 years of experienced on mobile application (Android & iphone ) and App admimn with development web services where admin can manage the app from backend I have Thêm

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Hi, i’m senior android and ios developer for over 5 years, working at home full time freelancer. I have team to help me on backend side for faster development. Thanks, hope we can work together :) ###### I've done Thêm

€8947 EUR trong 60 ngày
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Hello I have rich experiences in android ,ios area. I have developed several design ,content management,gps,map,music,video,social,chat,game... apps. I can develop iOS project using both objective c and swift langu Thêm

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We are the team of IT professionals with more than 7+ years experience in C#/.NET and deep specialization in Xamarin development for iOS and Android. Relevant Skills and Experience C#, .NET, Xamarin Proposed Mileston Thêm

€10000 EUR trong 30 ngày
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€9411 EUR trong 80 ngày
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I can take it if you want Native instead of Xamarin application. Hi, I have 5+ years of experience in Android/iPhone/iPad Application development. I have developed applications for range of domains like eCommerc Thêm

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