Mobile Xamarin / C# Web services / Social Media

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.

Beceriler: C# Programlama, Microsoft SQL Server, Cep Telefonu, Web Güvenliği, Xamarin

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Proje NO: #14355478

98 freelancer bu iş için ortalamada 8125€ teklif veriyor


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. https://www.freelancer.com/projects/Android/PDF-M Daha fazlası

in 70 gün içinde10000€ EUR
(172 Değerlendirme)

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 Daha fazlası

in 30 gün içinde8823€ EUR
(188 Değerlendirme)

Greetings, I am very thankful for this opportunity. It’s really exciting that we have below similar kind of expertise and work experience: https://itunes.apple.com/us/app/face-swap-editor-to-morph/id986073281?mt= Daha fazlası

in 40 gün içinde9058€ EUR
(25 Değerlendirme)

Greetings We have gone through your given details. WE are ready to deliver the job. Please interact with us. I have vast experience over Xamarin. I can assure you for a quality work from my side. Kindly find belo Daha fazlası

in 30 gün içinde5294€ EUR
(401 Değerlendirme)

https://www.dropbox.com/s/knj2fgmi932w7b8/second%20bid%20text.txt?dl=0 here is my proposal Relevant Skills and Experience object C, Xamarin Proposed Milestones €8333 EUR - Milestone

in 30 gün içinde8333€ EUR
(38 Değerlendirme)

https://www.dropbox.com/s/as1kgb329kjm4my/freelancer.txt?dl=0 Relevant Skills and Experience ObjectC, Swift, Xamarin Proposed Milestones €8333 EUR - Milestone

in 30 gün içinde8333€ EUR
(48 Değerlendirme)
in 30 gün içinde8823€ EUR
(51 Değerlendirme)

Dear, I am Smile Song, Mobile developer in China. I've just read your job posting and I’m very interested. I'm a certificated freelancer with almost 600 good reviews from clients. I have experienced knowledge in ev Daha fazlası

in 30 gün içinde9278€ EUR
(285 Değerlendirme)

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 Daha fazlası

in 30 gün içinde8000€ EUR
(43 Değerlendirme)

How are you? I am a Mobile & Web developer who have 10 years experience of program develop and 5 + years in mobile. My main field is social I am interested in your idea . so I hope to chat with you for details Daha fazlası

in 30 gün içinde6000€ EUR
(72 Değerlendirme)

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 Daha fazlası

in 50 gün içinde14000€ EUR
(59 Değerlendirme)

Hello, Below is the brief of project scope ►►Project Title- -Mobile Application Development. ►►Kindly communicate with us so that we can discuss the job post. ►► Our Profile ◄◄ ► https://www.free Daha fazlası

in 90 gün içinde8000€ EUR
(22 Değerlendirme)

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 Daha fazlası

in 50 gün içinde8729€ EUR
(95 Değerlendirme)

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 Daha fazlası

in 60 gün içinde8947€ EUR
(31 Değerlendirme)
in 30 gün içinde8823€ EUR
(18 Değerlendirme)

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 Daha fazlası

in 30 gün içinde7647€ EUR
(72 Değerlendirme)
in 30 gün içinde8823€ EUR
(43 Değerlendirme)

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 Daha fazlası

in 30 gün içinde10000€ EUR
(39 Değerlendirme)

Dear Sir, I have read Project Description & . understood everything but I really need more detailed requirements or at least high level features to estimate it precisely, because based on the project description, it Daha fazlası

in 80 gün içinde9411€ EUR
(10 Değerlendirme)

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 Daha fazlası

in 45 gün içinde10000€ EUR
(104 Değerlendirme)