React.js is an efficient, declarative, and flexible open-source JavaScript library that is useful for developing user interfaces specially for single page apps. With React.js, users can build complex user interfaces from “components.” Components are small and isolated pieces of code.

React.js can also be used as a base in the building of both mobile and single-page apps. Although, complex React.js apps usually require additional libraries for interaction, routing, and state management with an API (Application programming interface).

React.js makes it possible for developers to design large web apps which can change data, without reloading the page.

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    react native audio component 6 days left
    VERIFIED

    need to implement react native audio component in react native app ( ios and android)

    $65 (Avg Bid)
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    1 bids
    Build me a app 6 days left

    Restaurants finder with food ordering app having payment gateway

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    Our company is building algorithms for time-series predictions. We are working towards an MVP and we need a front end. Our backend works in Python and exports relevant results to S3 in Parquet format. We currently have a mock-up front end as the one that can be seen in the screenshot. Now we're looking to build the real thing. You will be given an S3 link with a parquet file containing time...

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    I am looking for developer who has good experience to Working with React-Native (Not ReactJS). I have ready running social website that developed in HTML5/JS with having the Java & MySql as backend. Developer need to use the same Java based web services into the React-Native to display all the data into the mobile same as my website. NOTE: Please don't bid any learner or beginner. Looking...

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    I want to redesign the frontend of my drupal site with ReactJS while the drupal will serve as the backend for the site.

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    The application must have: - Configuration (Configure the HTTP route and the Web API port where the web services will be) - Login (Remember password, recover password, tokens) - Main screen: * Search according to types * Search configuration. * Result in view groups. * Show images dynamically, returned by the web API. - Synchronization of the list of personalized contacts of the web ser...

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    Pet Daily HK 6 days left

    I need some changes to an existing website.

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    This is a personality type quiz. It requires weighted scores that are then calculated at the end of the quiz. It must be done in React or Wordpress. The Flow: 1. User visits the article and finds a button to take the quiz OR User is directed to the quiz page via external source (e.g Social Media) 2. New window opens and the user proceeds through taking the quiz. 3. At the end of the quiz the ...

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    Project consist of: Web application (with multi-language support) Ios & Android application ( with multi-language support) Applicants must have experience in building such project. Applicants must share admin/user access to test their marketplace project which they recently build. (No demo => dont apply)

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    I have successfully created react native app and its works perfectly from my windows machine with android phone. Now i have used same code in mac to run app in iOS device but i am getting error of maps with xcode 10. So my requirement : Need 1 dedicated person who can solve my react native maps issue and any other issue if it occurs while debug from xcode 10. Note - I have run same code on mac...

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    I'm looking for a professional developer who can develop a medium-sized project in react native, developer also need be familiar with working with backend developer. Short brief of the functions: Code design / design exists Forgot password Login / register user Possibility for a user to register data, which can be converted to pdf. Chat between users settings page some complex ca...

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    We have a project built with React Native that includes beautifying user from camera stream. We need to integrate a native open source code named KSYLive ([login to view URL]) into our app. Deliverables: - Can view/ stream with beauty effects directly from the camera (for both iOS and Android - open source for both is available). - The camera stream can be fed to the WebRTC stream to broadcast to...

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    Our company is in the project of building a logistics network platform to consolidate single shipments from each customer to fulfil the empty spaces of transportation providers. it is called SendByShare Platform. We are in the first stage of development, prototype. So we need a developer to work with us to work with our company concept. Job requirements: 1. Deliver the product on time 2. Have e...

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    I need a senior react developer for my project. Please include your best portfolios. This is full time position, so if you don't meet the requirements, please don't apply. You should be able to show me some code ( only few files ) for your portfolios. If it's not possible, you don't have to include that portfolio. I hate fake portfolios. Thanks

    $26 / hr (Avg Bid)
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    I need a senior react developer for my project. Please include your best portfolios. This is full time position, so if you don't meet the requirements, please don't apply.

    $32 / hr (Avg Bid)
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    We are a cryptocurrency startup that we are in busy to launch our ICO campaign in the middle of November. We urgently need Senior experienced MERN stack developers that can build up our ICO platform and MVP. Our timeline is a bit tight so we need to move fast with top developers. If you have strong experiences in Node, Express, React and Vue frameworks, please apply. We are gonna hire 2 or 3 devel...

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    Need a developer for 7 to 10 pages of an app to be made on react native. The job would include few front end changes and API integration. Need to start work asap.

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    As a developer myself, for over a year now i have been working on a project which includes a mobile application written in react native. During this year i also have been working on a backend written in nodejs which provides a RESTful API and which is used by this mobile application. Now that the first version of the mobile application is finalised, the client wants to extend this project/concept ...

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    MUSIC DATABASE WEB AP I have a partially built javascript music manager web app that I need completed. It is part of a music kiosk system. The music kiosks stream music from the music database. The web app manages the music database including song information. I am already able to upload songs one at a time. REQUIREMENT: 1. Install the existing web app on my server. 2. Create a facility to bulk...

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    I'm looking for a person who can modify our app that is built using Sharetribe. Please include sharetribe experience and your previous work in your message.

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    A react-electron project has been built, there are few issues that are to be dealt with.

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    It was a pleasure getting to know you and your background. Here is a brief description of the opportunity for this role. Job Description * Expert JavaScript coding skills and proficiency in developing single page applications * 3+ years of experience building commercial React web and React Native mobile applications for both iOS and Android * Strong understanding of mo...

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    Requirements: We want to setup backend for our Ionic app and Admin panel. Technology will be Node.js and MongoDB.

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    Improve react native - app 6 days left
    VERIFIED

    We are looking for someone with - At least 2 years of react- native development experience. - At least 20 hours / per week availability - Portfolio of react native app To improve an existing app - Add new features - Fix bugs - Improve app look & feel and design

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    Arduino board integration 5 days left
    VERIFIED

    About the project: This is a React project, I need make some modification, so it can upload codes to Arduino boards. Your mission: 1. Calling Arduino APIs, upload codes to the board. 2. Display Arduino boards connection status on the UI, and some other slight changes

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    We are looking for someone to join our development team for a short term project (with a potential for further projects). Working remotely is an option although it would be ideal if you would be able to work from our London office as well. The technology would include: -Node -React -Redux -AWS -Electron Initially we would like to create a cross platform electron tool that would authenticate wit...

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    I am a graphic designer & front end web developer in Africa and i need a backend software developer (web & mobile) to team up to kick start my creative agency am setting up. I will be taking on website and mobile software application projects and i need the services of a good backend software developer (web & mobile) i can rely on to work on the backend development. This isn't a ...

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    We are building a new Social Network Platform to sort and help all the needs any traveller might need. Localepal would be the new age Social platform with hassle free travel. We need a React native coder as our application has already been started and I have a small team to assist in the final Making of the application too . We need help in materialising those designs into a whole Application.

    $350 (Avg Bid)
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    The project is mostly finished, there are a few functionalities that need to be implemented. The stack is: very good experience with JavaScript, CoffeeScript, [login to view URL], React.js, React Router and Node.js, MongoDB. Do think that you can handle this stack? This project requires experience with the above mentioned technologies as this is a project that has been developed by two other tea...

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    AR Video Camera ------------------------------- Here is our specification for this project. Please let me know your cost & time estimates for the milestones listed. We are looking to use sentimask or another library if you can reccommend something better or more cost effective for face replacement. Delivery: we need a react native module that wraps native code for both iOS and Android for th...

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    We are Lasting Dynamics, software house based in Torre del Greco, Italy. We are looking for a react developer, individual developer, for a long time collaboration, full time monday to friday, 9-18 CET, monthly salary. Main skills: react.js, redux saga Eventually skills: react native

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    We are in process of building a web app. Our current developer is sick So, we need a new full stack developer to come in and handle the project going forward. This is a long term opportunity to complete the web app and then possibly maintain it going forward. You should have atleaast 3 years of experience working with node.js, mongodb and react.js and be able to start right away. We are interes...

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    We have backend with ready REST APIs (with documentation). We would like to develop a MVP for few screens. Please share your REACT NATIVE work experience in the bids or in the chat.

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    Develop a new web service, “Neverwrote”, for managing virtual notes—The backend shall run on a Node.js server, and that the frontend shall be built with React. You will only need to work in the api/ directory (for the backend API) and the frontend/ directory (for the frontend interface). The NGINX server is already correctly configured, as are all of the Docker-related things, ...

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    Customisation of the front end developed in ReactJS. You will be asked to answer the following questions when submitting a proposal: 1) What is the difference between a controlled component and an uncontrolled component? 2) Difference between state and props?

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    I will send details of the game via pdf.

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    React JS developer 5 days left
    VERIFIED

    London based studio is looking for a react js developer to help us out in the next 2 weeks to get some of our workload done. Should be a fast coder in react JS. Reply with your github [Removed by Freelancer.com Admin for offsiting - please see Section 13 of our Terms and Conditions] for any other references you might have. If the work is good work will be on going. We'll be giving you l...

    $18 / hr (Avg Bid)
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    React native app 4 days left

    I am looking for react native professional developer. Experience building Android and iOS apps using React Native Understand the structure of existing applications and how to work with them Should be a self-starter, and a developer focused on results Experience of at least 3 applications on react native. (links required)

    $870 (Avg Bid)
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    I am looking for react native professional developer. I have already react native app but it has some issues. So, i want someone to fix this small issues. My budget is 50$. you have to put "react native" in your quotes.

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    I need you to develop some software for me. I would like this software to be developed using Javascript.

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    This project is to build a plugin with two Gutenberg blocks, both using React-Slick to display a carousel. Block one is a slideshow to show content added within the editor: - Image - Headline - Text - Button Text - Link User should be able to add multiple slides with all of that content. I have an interface I am currently using for another type of block that has the button editing functionali...

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    I need to set Google Tag Manager on my platforms. - 3 different Wordpress Installations - 1 react/node.js application (Important!) I need analytics all over the website, and conversion tracking.

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    Hello! I am developing a web app + browser extension that handles price comparisons. I would like to have it built in Meteor + GraphQL. Maximum delivery date is Nov-9. Since I am also a developer with experience in these technologies, I am able to direct the work with low friction between business needs and programming tasks. I will give further details after initial contact. Thanks!

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    I need a Device and Browser compatible HTML CSS UI/UX for Web application English Arabic Left to right and Right to left Site separate separate must be browser and device compatible for pc tablet mobile Fully Responsive to be able to view from Mobile and PC any device Must be fast loading should be very fast thats why you will use javascript frame work Angular JS or React JS anything you can...

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    Hi Freelancers, I need to create random video calling app for iOS and Android. User will be able to video chat with any other person available on the app. The technology stack should be 1) Android / iOS swift 2) Or React Native is you have cross platform skills. 3) Twilio API. 4) Backend of your choice. Top level features: 1) Random video calling between the users. 2) In App purchase. 3) Adding...

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    I am very interested with react.js library such redux, graphql, gatsby etc. So I am looking for react.js expert that have good experience reactjs library such as redux, graphql, gatsby. Best regards.

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    We need a single dedicated part time resource on Reactjs with flex to give support for US people on weekdays morning around 90 minutes IST 6 00 am to 8 00 am will provide 18000 per month minimum 4+ years of experience candidates only eligible for the bid.

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    The objective for this service is to enable a user to snap a photo of a paper invoice and have the service pay the invoice for them. For this to work the service needs to capture the relevant data from the paper invoice for the service to create a payment on behalf of the user with the data required. The scope of this project is _not_ to deal with the payment, but to capture, analyze, process and ...

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