Developer to create a cross platform backend system for user & data management for our iOS/Android/Windows Apps and software

We have some iOS/Android/Windows Apps/Software for industrial applications. Each App/software has its own local database to store measurement records. We are looking to create a cross platform for user and data management involving server setup, database structuring, web dashboard development, etc.

Some of the requirements are:

1. Each App/software has its own backend server (we call it a module for now) on this platform for database backup/restore. If an App works on both iOS and Android, they share the same backend server.

2. There are 2 types of client accounts on the platform: company manager and staff.

3. Company manager account can create staff accounts, purchase module subscriptions and assign modules to different staff accounts.

4. All clients can sign in the system from any App/software (iOS, Android, PC, Web).

5. On iOS/Android/PC, staff account can view and backup local measurement records to online server. Staff account can also view, delete and restore his online measurement records to local database.

6. On Web App, staff account can view and delete his online measurement records on backend server.

7. Company manager account can view all records from all staff accounts under his account.

8. User accessibility to modules is based on subscription. Each module can be subscribed individually by company manager account and assigned to staff accounts

9. The system integrates subscription management. Subscription fee can be paid monthly or yearly inside the system.

10. New user has 30-day subscription trial option.

11. The system should be expandable, i.e. if we develop a new App/software, its backend server can be added to this system as a new module.

Please send a proposal in doc/pdf format for this project to include:

1. Work description

2. Tasks

3. Milestones

4. Duration of each milestone

5. Deliverables for each milestone

6. Total hours and days for the project

7. Hourly rate and total cost for the project

8. Information about developers who are going to work on this project

9. Link of one of your previous projects that is most similar to this project (DO NOT send a whole page of links!)

Feel free to ask any question.

Skills: Backend Development, Database Development, Mobile App Development, Payment Gateway Integration, Web Development

See more: transfer user data website, cross platform stl, help music data management system, codename one, best mobile app development tools, open source mobile app development software, mobile app development software, android app development software, app development software for beginners, xamarin, cross platform mobile app development, cross platform project management, user data management php, create multiplayer cross platform app, ios android windows cross platform, ios android windows phone cross platform, methods mobile cross platform data exchange, inventory management ios android, create cross platform email, cross platform contact management

About the Employer:
( 3 reviews ) Austin, United States

Project ID: #18174486

30 freelancers are bidding on average $13/hour for this job


Hello, I hope you are doing well, We are Sphinx solution, a Software Solutions and Services Company of 80+ in-house developers and designers specializing in Mobile Apps Development, Web Technologies, Software Testin More

$15 USD / hour
(74 Reviews)

Hello there, I have gone through your requirement of Cross platform apps development for your existing web and backend system. It would be more helpful if you share more in details so that I can get clear scope More

$17 USD / hour
(42 Reviews)

Hi, 1. The PDF file cannot be attached unless the chat is opened. 2. You have mentioned that you already have the some apps with local database so is it possible to review those apps? 3. I am understanding tha More

$14 USD / hour
(18 Reviews)

hello we are more than 6 + year experienced programmer team & we provide you our best Quality App, beyond your desires with Long terms tech support & [login to view URL] provide me your IOS/Android studio app requirement More

$13 USD / hour
(91 Reviews)

Hello, I have 6 years of experienced on mobile application ( Android +iphone/ ipad + Windows ) and App admimn with development web services where admin can manage the app from backend ,. I have developed the TAXI a More

$12 USD / hour
(153 Reviews)

Hi, I have 7+ years of experience in Mobile (iOS/Android) app development and Web development(PHP, .NET, JAVA). I have great experience in mobile & web app design & development. I have developed several design, co More

$15 USD / hour
(92 Reviews)

Hello, Nice to meet you, I hope you are well Here is a senior mobile & web developer I have read your job description with an exciting mood :) In one word, I can say <I can do your project> proudly !!!! I a More

$14 USD / hour
(12 Reviews)

""I have worked for many app development projects which required extensive detailing. I hope you would choose me for this job, looking at my expertise, and my assurance to get the job within budget and on time."" pl More

$11 USD / hour
(12 Reviews)

Hello. How are you? Thanks for your job posting. I have just read your description carefully. Mainly I am working on Backend side. I want to have a chat with you or call. I can answer to you all. Let's have sho More

$8 USD / hour
(42 Reviews)

Hi, you want web based system and app both ? so design theme you will provide or we will create ? we already develop very similar type of website on MVC framework please check the website : [login to view URL] More

$15 USD / hour
(14 Reviews)

Hello, How are you? I'm a backend expert with Python, PHP, Node.js I can create any kind of backend. If you check my profile, you can know my coding skills and experience. I can provide you good result with my s More

$12 USD / hour
(30 Reviews)

How are you? I really would like to work for you. I'm full stack professional developer. I have rich development experience and have developed many ap More

$10 USD / hour
(60 Reviews)

Hi, I have 7+ years of experience in Mobile (iOS/Android) app development and 6+ year Exp in Web development(PHP, .NET, JAVA). I can use Native/Xamarin/Ionic/PhoneGap for mobile development. I have great experienc More

$12 USD / hour
(51 Reviews)

Dear Employer, Greetings of the Day! Thanks for sharing your requirements with us. For your project scope, I would be really glad to let you know that you can hire from our team,skilled developers and professionals More

$8 USD / hour
(6 Reviews)

Hi, As described the flow and features of the App and web, it will be a performance tracking and managing system. >> System will handled via web based admin >> Employees will be having mobile app to track the ta More

$12 USD / hour
(9 Reviews)

Greeting! i have rich skill for ios and android mobile solution development. Please check below solutions i have participated. [login to view URL] [login to view URL] [login to view URL] https://ww More

$33 USD / hour
(36 Reviews)

Hello , I have gone through your requirement and understand that,you are looking to develop a mobile app (Android + Ios + Windows ) In which app I have worked on many apps in various domain like Dating app ,Resta More

$12 USD / hour
(9 Reviews)

Hello, We understand that you have individual apps. We want to review your existing mobile apps and web app. We request you to kindly provide an existing app as a reference to look into its features and functionalit More

$12 USD / hour
(6 Reviews)

Hello, I am a senior Mobile App developer. I clearly understood what you are looking for. I will provide you with my full support. Having experienced several projects similar to yours in the past, I feel confident in More

$12 USD / hour
(15 Reviews)

Dear Client, You landed on the right profile We are Synapse and we deal with the website and mobile development, As per my understanding you want a cross-platform for user and data management involving server setup More

$12 USD / hour
(2 Reviews)