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.

De 264315 comentarios, los clientes califican nuestro React.js Developers 4.84 de un total de 5 estrellas.
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    189 trabajados encontrados, precios en USD

    Tenemos un ecommerce en producción y necesitamos mejorar los tiempos de carga de manera sustancial. El objetivo es mejorar los tiempos de carga más de 50%, actualmente los tiempos de carga son superiores a 12 segundos por lo que hay mucho margen de mejora. Respecto a los temas de diseño, necesitamos: 1. Hacer ajustes en etiquetas H1 y estructura on page para página de categorías. 2. Agregar posibilidad de usar hipervínculos en página de categorías/marcas. 3. Que en páginas con parámetros de url del tipo ?page=2, ?page=3, hacia adelante.. se ocupe el meta tag <meta name="robots" content="NOINDEX,FOLLOW"/> Para desarrollar estas mejoras deberá habilitar un ambiente de desarrollo o test...

    $441 (Avg Bid)
    Acuerdo de Confidencialidad
    $441 Oferta promedio
    12 ofertas
    Mejora a página web adlyceum.com 4 días left
    VERIFICADO

    1. Hacer la página responsiva para que se adapte a los diferentes tamaños de pantalla 2. La página consiste en cargar artículos hechos por estudiantes, lo que necesitamos es que estos se puedan cargar desde documentos con formato word convirtiéndolos a formato html con un estandard como este Adicionalmente, debe incluir imágenes, tablas, bloques de texto, y links web que estén dentro del documentos word.

    $463 (Avg Bid)
    $463 Oferta promedio
    68 ofertas

    Creación de tabla de datos donde se relacione el link que corresponde a cada usuario. Embeber en la Plataforma web PBI Logueo y direccionamiento: Los usuarios no tienen licencia de PBI, por lo cual se debe hacer por medio de token. Video de referencia: Pantalla de administración en la que el administrador de la plataforma pueda relacionar el link del dashboard que corresponde a cada usuario.

    $130 (Avg Bid)
    $130 Oferta promedio
    4 ofertas

    A) Desarrollo de un sitio web y aplicación (iOs y Android) de directorio de negocios B) Instalación y puesta en marcha en Google Cloud Platform C) Es indispensable que el desarrollador o desarrolladores tengan algo así existente que se pueda negociar su adaptacion. El prototipo de alta fidelidad está disponible en:

    $2238 (Avg Bid)
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    45 ofertas
    Next js frontend 2 días left

    Nececito un master en frontend movil first para el diseño del frontend usando

    $502 (Avg Bid)
    $502 Oferta promedio
    62 ofertas
    YoutubeExplode 6 días left
    VERIFICADO

    Develop a mockup page in ReactJS, as shown in the attached image, using the MUI CORE Material UI library ().

    $21 (Avg Bid)
    $21 Oferta promedio
    10 ofertas
    Project for a new website 6 días left
    VERIFICADO

    As explained in document, attached in chat

    $14 / hr (Avg Bid)
    $14 / hr Oferta promedio
    78 ofertas
    full stack developer ( blockchain) 6 días left
    VERIFICADO

    Mandatory Skills: React.Js, NodeJs, , Github, UI/UX Optional Skills: NextJs, Tailwind, AWS, CI/CD Internship Mode: Semi-fulltime Intermediate # Responsibilities Work on a category-creating, possibly disruptive fintech product in early stages Design and develop highly scalable and reliable systems end-to-end Architect the backend and infrastructure for scale Deploying and managing production servers and services in AWS # Requirements Past project experience is mandatory Good knowledge of React and Node.js Good understanding of MySQL Database Experience working on AWS or other cloud services is an Experience with open source collaboration Good knowledge of options trading is mandatory Ownership mindset – You shouldn’t require monitoring and you should be able to levera...

    $9 / hr (Avg Bid)
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    38 ofertas

    small project having 2 page website in react .

    $15 (Avg Bid)
    $15 Oferta promedio
    16 ofertas
    Pancaleswap lottery fork 6 días left
    VERIFICADO

    I am looking for an expert who is very familiar with the PancakeSwap Dex, especially the lottery. As you know, Pancakeswap uses cakes to buy lottery tickets. I want to change to BUSD. If you do well on this project, I'll hire you on a big, upcoming project.

    $230 (Avg Bid)
    $230 Oferta promedio
    23 ofertas

    I have issues with my landing page the page stopped working suddenly without any modification from our side. The freelancer that created it isn't available and I need a fix. As you can see from console there are some endpoints that are not reachable (prize_pool and setting). Here an explanation of the webapp: ----- On people can connect their private crypto wallets to pay an amount of SOL to the "admin wallet address", and they will get a ticket. At the end of the raffle 3 winners will receive 25% of the whole pool. There is a countdown, when it finishes the page redirects to the "raffle end page" where it shows texts and winners (url remains always the same) All variables like end page text, title, winners, countdown setup are modifiable in the admin page....

    $22 (Avg Bid)
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    23 ofertas
    Develop Web platform and database 6 días left
    VERIFICADO

    We have established a database of people with disabilities and those with chronic diseases. This database needs to be updated regularly given the high mobility and mortality rate of these groups. To this end, a web platform should be set up to provide regular information on these households and their distribution in addition to the tasks of organising the updating missions.  User management : - Definition of user groups and roles - Definition of the privileges of the different roles  Design the user interface and user experience to ensure that the application is user-friendly; o Develop a web platform connected to the database of disabled people's households and including the following modules - Consultations on the number of households targeted and collected. - Viewing key infor...

    $35 / hr (Avg Bid)
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    103 ofertas

    I have already the source code i need someone to modify the source code and make it works fine only. it is discord bot

    $21 (Avg Bid)
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    9 ofertas

    It is an ongoing project. It is a typical web application with many forms. It is built in Django + React and REST API with Postgres DB - The current priority is the integration of APIs with the front end and modifying/creating APIs as per the need - Integration with third-party apps needs to be done - Other miscellaneous tasks, within the project scope. - I will not bother you much about styling. Requirements: I need 6 hours daily. We are short on time and have missed the deadline already. Please apply only if you can give 6 hours per day. Start your proposal with '6 Hours' so that I can know, you have read the description.

    $12 / hr (Avg Bid)
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    17 ofertas
    React Project 6 días left
    VERIFICADO

    Looking for a full time React Developer with three years experience!

    $325 (Avg Bid)
    $325 Oferta promedio
    27 ofertas

    This project is based on Real Estate Property Management where USER [ Agent, Lender] can manage Property and Clients over this Platform with the assistance of other USERs [Home Inspector, Title Company] to meet the requirements of the Home Owner. Super Admin and Admin will have the entire access to this platform.

    $2733 (Avg Bid)
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    81 ofertas

    We want an expert UI developer with strong hands on minimum 10 years of experience in developing interactive real time web based Application screens using react js. Professional experiences in developing Applications for healthcare is preferred but not mandatory. The UI developer must have exceptional skills in selecting various color/ font combinations to create screens that are not only functionally great but attractive and syncs with our product brand. Consultant chosen for this project must first showcase their skills by developing a test sample screen which will be then evaluated by our selection committee. Consultant developing and submitting the best screen design will be awarded this project which will be for developing 10-12 screens. Price must be quoted per screen and the entire...

    $154 - $461
    Destacado Urgente Sellado Acuerdo de Confidencialidad
    $154 - $461
    9 ofertas
    Develop DataTable in React 6 días left
    VERIFICADO

    I want you to develop two datatables and three pop-up forms using react bootstrap. Table must me responsive. Table header sorting must work (ex: high,low, A-Z, Z-A, etc sorting) like jquery data table. Code has to be clean and neat. Take any dummy data just to check the table functionality. On hover effects must be there. Pagination must work perfectly, Showing entries in the table must work perfectly. On click update status button it should throw a pop-up as shown in the Data-Table-pop-up.pdf. Table must look exactly same as On-click checkbox in the header it show tick all the check boxes for bulk actions. In the search input field there must be place-holder animation (It should type automatically to gain the user attention example: / ). In the pop-up when we search for someth...

    $23 (Avg Bid)
    $23 Oferta promedio
    5 ofertas

    I have a react calendar component using Here is the demo and the code: I need some changes making to it. Including: - Changing the default calendar view (from today's date to the max date in the dataset) - Ability to de-select date, after clicking it - adjusting selected date text location - adjusting chevron icon size - adjusting dynamic height behaviour when changing months The requirements are attached in more detail

    $46 (Avg Bid)
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    35 ofertas

    Scale Dino, a SaaS based product start-up based in Hyderabad is looking for an experienced and outstanding freelance frontend developer / UI Developer who will be responsible for coding innovative designs and layout of websites. If you can build websites from the concept stage and ensure everything from layout to functionality is in place, you are the one we want. You will be expected to: Write well-designed, testable code with the help of the best software In-depth knowledge of JavaScript, CSS, HTML, React js, and front-end languages Create website layout/user interface by using standard HTML/CSS practices Integrate data from various back-end services and databases Gather and refine specifications and requirements based on technical needs Co-operate and work with web designers to matc...

    $13 / hr (Avg Bid)
    $13 / hr Oferta promedio
    39 ofertas

    I just need the Home page and Login or Sign Up Page for The design should match the Colour theme of Need clean and promising design

    $93 (Avg Bid)
    $93 Oferta promedio
    34 ofertas

    I just need the Home page and Login or Sign Up Page for The design should match the Colour theme of Need clean and promising design

    $97 (Avg Bid)
    $97 Oferta promedio
    39 ofertas

    Need for full stack developer (React + NodeJS + MongoDB) who can work for a project on monthly basis

    $4 / hr (Avg Bid)
    $4 / hr Oferta promedio
    23 ofertas

    Looking for someone who can help build out a Power Platform solution based on Power Apps and Power Automate.

    $31 / hr (Avg Bid)
    $31 / hr Oferta promedio
    36 ofertas
    XState State Machine Modeling 6 días left
    VERIFICADO

    I'm looking for a developer to model multiple process flows in a restaurant using XState framework (state machine). The context is one of a restaurant: - Customer orders food and drinks from a waiter. - Drinks and food get dispatched either to the kitchen or the bar. - In parallel, those get prepared. - As soon as either drinks or food is prepared, notification is sent to the waiter for ready items to be brought to the customer. Other flow may be needed if first job is sucessful. Deliverables will be working typescript code. Communication will be text and audio/visio-based. In english. Please mention in your application your previous experience with state machines and XState.

    $20 / hr (Avg Bid)
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    64 ofertas
    React UI changes 6 días left

    By clicking the + need to show only relevant data from service response.

    $20 (Avg Bid)
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    15 ofertas

    Hello, We have a free email system with API support. We want outside users to come to this system and register. When registering, we actually open an e-mail account for users. Afterwards, users will be able to log in to this e-mail address with webmail and mobile applications. However, the only thing required from you is the coding of the area where the account is registered and the API is managed. Examples: The scenario is as follows: The user fills the following form on the website: Name and Surname (Separate boxes) There will be a box with @ written at the end of the box. Username is entered in this box and if the user leaves the box, the availability of the username is checked with the API. Password and password confirmation boxes: This field must contain at least 8 charact...

    $246 (Avg Bid)
    $246 Oferta promedio
    31 ofertas

    An informative website fully designed UI/UX for development using the latest stable Angular/React and integrated with for content management as a headless CMS backend. 13 website pages -landing page -technology -about -services -rentals -brokers -blog -API OnboardMe -API Flows -API IdentifyMe -API SignMe -Checkout Fully responsive website with some animations and needs to be really well developed. Screens of some of the different pages are provided below for reference to understand the layout and the general flow of the different pages and the amount of work involved. Preferred tech: - Angular development connected with - HTML5 CSS and Typescript for small animations and transitions

    $2517 (Avg Bid)
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    92 ofertas

    The task is to display the repositories and allow the user to filter through the repositories. Use the official GitHub API to fetch and display repositories per user.

    $14 (Avg Bid)
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    16 ofertas
    React Js Developer 6 días left
    VERIFICADO

    5+ years of experience in front end development and having proficiency with HTML, CSS, Javascript, Typescript, ES6, React JS, React Hooks.

    $14 / hr (Avg Bid)
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    62 ofertas

    Must be from Gold Coast, Australia

    $95 (Avg Bid)
    $95 Oferta promedio
    50 ofertas

    NOTE:REMIX JS IS NOT REMIX IDE (SMART CONTRACT). Remix JS Framework are the skills I need (). Please ONLY bid if you have Remix JS experience. I have code that is written in NextJS and uses the Stitches CSS framework. This website is not live and the code is partially incomplete but has all the frontend and logic. "A lot of the work has already been started on, so you won't need to start from scratch." This phase of the project will be to rewirite the frontend code using RemixJS framework and remove any component that is not required. Backend integration will be with Cloudflare Pages/Workers, GraphQL. The Ethereum blockchain references would be rewritten to use the Hedera Hashgraph DLT. You must be proficient in Next JS and have strong experience with RemixJS fram...

    $749 (Avg Bid)
    $749 Oferta promedio
    71 ofertas
    REACT Developer 6 días left
    VERIFICADO

    Seeking an experienced REACT Developer to develop an SPA Demo App consisting of 5 functional screens, which will also serve as the milestones for this project: (1) Customer information – collecting basic customer information (2) Activity 1: My story so far o Users will drag and drop elements into a board with an x and y axis o Depending on where they drop the elements, it will assign a value to the element (3) Activity 2: The next chapter o Exactly the same as the previous page, just a different set of elements and x and y axis board o Users will drag and drop elements into a board with an x and y axis o Depending on where they drop the elements, it will assign a value to the element (4) Activity 3: My future confidence ...

    $337 (Avg Bid)
    $337 Oferta promedio
    150 ofertas
    I need AWS Amplify Expert. 6 días left
    VERIFICADO

    Hi, I need AWS amplify Expert. This task is urgent and remote job(via anydesk).

    $160 (Avg Bid)
    $160 Oferta promedio
    14 ofertas

    Looking for developer who can work on react-stripe project

    $179 (Avg Bid)
    $179 Oferta promedio
    31 ofertas

    Decision Phobia Terminator Web Application: Press the button and randomly choose the food pics. Budget is $80

    $73 (Avg Bid)
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    29 ofertas

    To increase page speed for the current React project, we are looking for React developers. Have you ever dealt with it? I am ready to hire the right candidate immediately.

    $13 / hr (Avg Bid)
    $13 / hr Oferta promedio
    131 ofertas
    React Developer 6 días left
    VERIFICADO

    Job Description 5+ years of experience in front end development Proficiency with HTML, CSS, Javascript, Typescript, ES6, React JS React Hooks and 16.8+ Lifecycle methods using hooks, Reusing state logics custom Hooks Advanced React Virtual DOM, Reconciliation, Context API, Render props wrapper hell Redux Redux Architecture/ Fundamental principles, latest Redux hooks, Middleware's(Thunk or saga) JS/ES6 latest features(variable scope, arrow fn, Template Strings, Object/Array destructure, Optional chaining, Spread/Rest/Null coalescing operator), Typescript, New Array methods, Async/Await, yield/generator functions, Promises CSS/Responsive design Flexbox, Display/Position, Box model, CSS selectors Tools: Webpack/Gulp/Grunt, Unit Testing, GIT, etc Experience in Source Control (Bitbucket/GI...

    $1216 (Avg Bid)
    $1216 Oferta promedio
    51 ofertas
    Need a website on Reactjs 5 días left
    VERIFICADO

    I need a website on Reactjs Website will be just a landing page which will contain animations.

    $142 (Avg Bid)
    $142 Oferta promedio
    33 ofertas
    React developer required -- 2 5 días left
    VERIFICADO

    We are searching a react developer for our current project and you may work with us part time developer.

    $531 (Avg Bid)
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    140 ofertas
    website developer 5 días left

    Need a website developer Work from home 2000 per month Experience Certificate will be provided . At least having knowledge about react.js , MERN

    $89 (Avg Bid)
    $89 Oferta promedio
    10 ofertas
    Build our web app 5 días left

    We are seeking a motivated and driven Software Engineer to help build web-based software from the ground up that enables our merchants to view, manage, and gain insights into the orders coming through or platform. These tools will be an enterprise level software that will allow our clients to get a high level overview of what is going on both in live time and in retrospect. The ideal candidate will understand full stack web application development but have a passion for best-in-class front end design. Project manage in a demanding and fast-paced environment is a must. We are a strong, agile, and highly motivated team working to build the next gen consumer purchasing platform.

    $20 / hr (Avg Bid)
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    170 ofertas

    We would like to build a professionally website with scroll animations/transitions similar to Nothing too comprehensive, but should be rightly done. Please send us samples of your past websites.

    $204 (Avg Bid)
    $204 Oferta promedio
    35 ofertas
    AI Platform SAS 5 días left
    VERIFICADO

    Platform SAS with GPT-3 Copywriting Solutions

    $1146 (Avg Bid)
    $1146 Oferta promedio
    47 ofertas

    Web Application based on react to be integrate with API and MSSQL Database

    $84 (Avg Bid)
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    10 ofertas

    Hello, We are a startup based in Belgium focusing on providing digital tools for travel professionals across the globe. I am the co-founder and I am in charge of all IT services. We are searching for a (part-time or) full-time full-stack JavaScript/TypeScript developer to help take some burden off of me. We have many different and versatile projects (both bigger and smaller projects) currently sitting in our pipeline. We are searching for someone that not only wants to finish the projects but also thinks critically about them in order to help grow the company. We are very open to all kinds of new ideas such as new internal or external projects, new ideas to further automate our IT services/infrastructure, new tools or technologies, … Some of the current tools we are using: ExpressJ...

    $8 / hr (Avg Bid)
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    43 ofertas

    Food Tracking and Delivery Service Marketplace Web API Backend: Django Frontend: React.js RabbitMQ SQL UX/UI Cloudinary Readability, Security, Load Test Terraform/DevOps (Continues Integration/Continues Delivery) GitLab Project Management Teamwork Event Bus Microservices Web and Mobile App

    $2550 (Avg Bid)
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    53 ofertas

    For company project, full stack engineer with .NET Core and React development needed. At least 7 years of experience must Please provide the previous works and send me your resume.

    $21 / hr (Avg Bid)
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    87 ofertas

    We need a front-end developer who is experienced in React and building dynamic webpages. Similar websites - vidyo (dot)ai

    $151 (Avg Bid)
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    34 ofertas

    Description:- Given scenario - Once a user login into application Bearer Token will be generated which will expire in one hour from the login time. Requirement - Azure B2C_Msal Refresh Token. Azure B2C_Msal related login pages need to be matched as exact to the wireframe. Using azure RefreshToken( ) Function refresh the token whenever the old token expires without interaction to user. Or else once the token is expired the user should be logged out of the application and need to be redirected to Login page.

    $104 (Avg Bid)
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    8 ofertas

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