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Sync data between Webbased app, mobile (Android, iOs and GMail -- 2

€3000-5000 EUR

Cancelled
Posted about 9 years ago

€3000-5000 EUR

Paid on delivery
1) Client side App for synchronization of: - Contacts (including pics) - Events (Calendar) - Tasks Requested platforms for mobile devices (mobile phones and tablets): - Android 4.x - iPhone 5, iPhone 6 - iPad 3 Custom settings: - interval of synchronization (working hours and days x rest of week) - Special synchronization flag for Contact - sync services setup (name, url, protocol, ssh, etc.) 2) Server side (Backend): General: - .NET technology, language C# - PostgreSQL DB - Approx. 20 tables (contacts, events, tasks) - Optimization of data sync - Synchronization via several threads e.g. several jobs - Solution of sync collision - User authentization by ASP.NET Identity | The ASP.NET Site 2a) Mobile sync: - Synchronization between mobile device and backend (invoked from mobile side) - multi device support for a user 2b) Gmail sync: - Synchronization between backend and Gmail (invoked from backend) Performance: - 10 000 users, 20 000 mobile devices Requirements: - Description of solution and architecture - c. 1/2 A4 - price - estimated time All source code must be provided. All intellectual properties developed for this solution becomes property of BP.
Project ID: 7036861

About the project

72 proposals
Remote project
Active 9 yrs ago

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72 freelancers are bidding on average €4,432 EUR for this job
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Hi, We have gone through your requirement and we understand that you are looking for highly skilled, qualified, and experience Development team for your project to develop application where user can synch data from there phone in app. As our teams have work on several similar projects so we would like to suggest you to hire dedicated developer to work on your project. Further once we are shortlisted we will provide you demo or our similar existing application. We have a well-established track record and our services have always met with great customer satisfaction. We offer great services at a very competent price and have never been known to compromise on the quality of our services. We have total 120+ employees in our firm where we have 10+ in Mobile Unit, 10+ in Web Unit, 6+ in Python team, 10+ in .Net Unit, 10+ in Designing Unit, etc... We are ready to start the project immediately. We do follow a rigorous but flexible testing policy that makes us do the testing work from beginning. We do unit testing for each module or task pre-defined as per the milestones. We carry out the alpha testing for each module completed. We also have red-mine system in place for bugs and task management. Also we have our svn integrated to the same system. We also do use of Git and base-camp in case of project management. We hope to hear from you soon. Best Regards, Chandani Kotecha
€4,742 EUR in 50 days
5.0 (70 reviews)
9.5
9.5
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Hello! I am interest your project and I hope to work with you. My Ranking is Top 7th on freelancer. I have enough experience with WEB developing for 5+ years. Client satisfaction is my top priority. I will complete your project perfectly in your deadline. I am ready to start the work, and it will be a great pleasure for me to work for you. Please get in touch. Looking forward to hear from you. Thank you for your post!
€5,154 EUR in 30 days
5.0 (35 reviews)
8.7
8.7
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Hi there, I'm a mobile applications development team manager and a developer myself too, and I'm very interested in your job post involving these skills. We have recently worked in iOS/Android/Windows Phone apps development and we have also User Interface design and Graphics design skills too. Our team also has so much experiences in Web/server development. We have consistently delivered projects on time and under budget, which has earned us many positive ratings, as you'll see in our work history, a number of our projects are in our freelancer.com portfolio. Some of our works are very similar to your requirement. We are available to chat via freelancer.com chat tool and your suggested chat tool, and would be happy to set up a convenient time to discuss the application you're moving and some ideas about the safest way to get it into the cloud. Thanks, Quy.
€5,555 EUR in 30 days
4.9 (154 reviews)
8.6
8.6
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Dear sir. To get me in here, will be the success of your business and life in the world. The OASIS of Desert will not be good result than you got me in here. I am a high quality and top mobile developer. I have rich experiences in developing mobile app for over 5 years. Before felling in love with mobile apps, I had worked extensively with Java, Objective C, Eclipse, XCode, C/C++ to have a strong grip on OOP and design patterns. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. This project is one of my excellent skills and full experiences. I will provide high quality result and fast service within your budget, surely. My working time and communication will be flexible to meet your requirement. Let's go with me! Best regards!
€5,263 EUR in 30 days
5.0 (46 reviews)
8.2
8.2
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Dear, sir Our team has many experiences in mobile app development. Especially we are talented in contents app to associating back end web server. I would like to participate in developing your project. We have already developed many Android and iPhone apps. You might have read this in our profile. Please send me your detail requirements. We can discuss it. Of course, I will do my best. Thanks in advance. Dear, sir
€3,999 EUR in 30 days
5.0 (137 reviews)
8.4
8.4
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A proposal has not yet been provided
€5,882 EUR in 30 days
4.8 (97 reviews)
8.1
8.1
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Hello, I have 6 years experience in mobile app development and have already published lots of professional apps in app store and play store. They include social apps(Censorgram), video streaming app(vConnect), Quiz app(Trivia4Friends), Daily Question App(OpinionSlice), Render app(Real Property), Emoji app(Wallstreet, Sexy Emojis)… I always work for long term relationship by providing high quality app within the deadline. Quality is the one I can guarantee in my work. I am available for 8+ hours per day and always ready to discuss and solve your new problem. You can refer my work history for more detail. Thanks
€4,210 EUR in 30 days
4.9 (63 reviews)
7.9
7.9
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Hello Thanks for your good project. I have seen your description carefully. There is no any risk for me at your project. Please check my work history. I have developed a lot of iPhone/Android apps and published to AppStore and GoogleStore. I have rich experiences in REST API, SOAP API, JSON/XML, PHP & MySQL Web Service API, GPS and Geolocation API, Facebook API, Twitter API, Foursquare API, MapKit, Payment Gateway APIs, eCommerce platforms. My ultimate goal is to build a long lasting relationship with my clients. I am looking forward to hear something positive from you and working on this project. If you hire me, you will get more benefits than you expected from the other freelancers. I'm ready to start your work and we can discuss your requirements via Voice conversation. please send me a private message to discuss details. Thanks.
€4,210 EUR in 30 days
5.0 (33 reviews)
7.6
7.6
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A proposal has not yet been provided
€4,705 EUR in 30 days
4.9 (39 reviews)
7.6
7.6
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Hi Employer, Greetings, -->> As we have studied your Requirement for Synchronizing Mobile and Web Application. We have an Commercial Experienced in Asp.Net, C# Programming, Android, iPhone, iPad and iOS. -->> Looking forward to the opportunity to work in this project. Thank you.
€3,000 EUR in 45 days
4.9 (57 reviews)
7.6
7.6
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Let's discuss over freelancer Personal Message Box for the proper estimation of cost and time. I am myself doing programming so you will directly work with one person and that's me. No mediators. No managers. No subcontractors. see my recent work for the technical expertise along with reviews & feedback on my profile page.
€4,705 EUR in 45 days
5.0 (14 reviews)
7.2
7.2
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HI. PELASE CONTACT ME, BEFORE AWARD SOMEONE ELSE! I am senior iOS&Android&Backend developer and have 7+ years experience. You can check my profile and some work history. https://www.freelancer.com/u/daguang.html I can complete your project successfully within the shortest duration. I am providing high quality results. I wish your reply. Regards.
€4,705 EUR in 30 days
5.0 (22 reviews)
6.8
6.8
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Hi there, Good Morning ! I read the description in full. We have been serving this industry for past 14 years with overall team size of 80+ developers. We have been working on similar line of projects so we have knowledge & expertise to accomplish the mentioned task. Let's discuss the solution via PMB. I will also share our experience too. As far as estimate is concern it will take around 35-40 workign days & cost you EUR 4444. Please drop me a message to discuss further. Regards,
€4,444 EUR in 40 days
5.0 (18 reviews)
6.6
6.6
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Hey, I would like to have a detailed discussion about, - design - functionality - user roles and behavior - App flow - technology WHY CHOOSE US -Well versed with latest Technology development -User friendly interfaces Graphics -Continuous technical support 24*7 customer support -Ready to sign NDA Seeking for an appointment. Thank you.
€5,000 EUR in 30 days
4.7 (18 reviews)
6.8
6.8
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★★★★★ Verified iPhone programmer by Freelancer Dear Client. I read your job post message, and i think it is possible by me. I am a Chinese mobile developer, have rich experience for iOS programming. I already developed 30+ iOS apps in 4 years, you can check my skill via freelancer profile. I can’t write all url for my previous apps, because cover letter message have limit. My focus field is PHOTO/VIDEO, QUIZ, GAME, GPS, Social (Messenger, Video chatting) app, I can show my skill via interview. If you have interest my proposal, please contact with me. Regards Gan.
€4,666 EUR in 30 days
4.9 (34 reviews)
6.4
6.4
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Hi,dear. I am a team manger who have many High Skilled developers with Android,IOS,Web. So we can develop app quickly. And we are going to keep High quality. Please contact me . Send my regards. Thanks. kkokko...
€3,333 EUR in 30 days
4.6 (105 reviews)
7.0
7.0
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Hello sir, Ref. your project description i have only question regarding the whole project till now and that is - What do you actually want to do by syncing Gmail, and what actually you want to sync. Please clarify Looking forward to your valued response. Regards, OK Team
€5,000 EUR in 30 days
5.0 (13 reviews)
6.1
6.1
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Hello. This is on my line. Mainly, on mobile platform, we need to develop iOS/Android app(syncing with postgresql database). This communication will be implemented by .net backend. There's gmail api also so we can implement the gmail and postgresql sync easily using .net framework. This will take 15-20 days, I think. So the main point is that we have to do .net efficiently. What I need is that if you can, you provide the latest version of .net IDE. Dev Tools are also one of components of development, so I need that. If you have any questions or discuss more details about your project, please let me know. I hope your good response. Sincerely. Yong.
€4,210 EUR in 15 days
5.0 (13 reviews)
5.9
5.9
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Hi! I have seen your description I can do this job perfectly.. If you want a good result, please reply to me I will wait your good response THanks
€4,444 EUR in 30 days
5.0 (9 reviews)
5.5
5.5
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A proposal has not yet been provided
€3,157 EUR in 30 days
5.0 (11 reviews)
5.5
5.5

About the client

Flag of CZECH REPUBLIC
Praha 10, Czech Republic
5.0
19
Payment method verified
Member since Aug 19, 2013

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