React/Next.js Upwork Jobs

Expensify is a team of generalists developing today's leading expense management tool. Maintaining our reputation as an innovative leader in the world of finance requires an incredibly reliable and secure system for processing financial transactions. Accordingly, we primarily leverage time-tested languages, but we're looking to unify our front-end across platforms. For this, we're leveraging React Native and are looking toward the community on Upwork to help solve a variety of problems, both big and small, related to this migration. Please see the GitHub issue for full details: github.com/Expensify/App/issues/6488 Your Proposal: - You *must* post a proposal for how you will fix this issue in the GitHub issue linked above. - Your proposal should include a technical explanation of the changes you will make. - Your proposal will be reviewed. - If your proposal is accepted, you should post the proposal in Upwork and you will be hired for the job. How to submit the code: To submit the code, we'll invite you to our GitHub repository, where you'll create a fork of our codebase. You'll create a branch on that fork, and when your code is ready for review, you'll create a pull request in our repository to merge your fix into our codebase. Our engineers will review the code, and approve and merge when the fix meets our requirements. Please review our Contributor Guidelines before submitting a proposal -  https://ift.tt/3CUUIgK Budget: $250 Posted On: December 08, 2021 00:07 UTC Category: Mobile App Development Skills:React Native Country: United States click to apply via All jobs | upwork.com

Backend ROR developer to fix / make updates to a product’s API before it goes live. General Information: The client already has a React Native app in pre-order state on the AppStore. We have developers focused on the frontend, a backup lead API developer, QA, and project management, but we need to bring in some additional help on the API side. Tasks and Deliverables: - Support with API Tasks & Bugs - Attend to daily Standups Required Experience: - Ruby on Rails +2 years - GraphQL +1 year - Authentication with FB - Push Notifications & SMS Messages - Email Sending - Redis & Background Tasks - Custom Searching. - Engagement Highlights The duration of the engagement is 3 months+ open to extend Min 20 hours a week/ max 40 hour a week. No agencies please. We prefer to work directly with a freelancer. Hourly Range: $40.00-$50.00 Posted On: December 08, 2021 00:07 UTC Category: Back-End Development Skills:Ruby on Rails Country: United States click to apply via All jobs | upwork.com

We are building a mobile app that combines features of Bumble with the Q&A section of OkCupid. Need expertise (or a team?) with expertise in: - Reactive Native - SQL Server (although we have local resources here to help with backend and API programming) - UI design - Mobile app development and submission to the app stores We are an 11-year-old online marketing company and believe we have a good strategy to attract users to this new dating app - now we just need a high-quality app built. wireframe: https://ift.tt/3rOQpAC wireframe walk through: https://youtu.be/YeM9ly3LBgY And short product spec attached. All are drafts and a work in progress, but this should give you an idea of where we are headed with this. Ideally we would like to work with a full-stack developer (with primary expertise on the front end/react native) that can work with our engineering team here in San Diego. Would like to have very short daily video calls to keep everyone aligned on the project. Hourly Range: $15.00-$75.00 Posted On: December 08, 2021 00:06 UTC Category: Mobile App Development Skills:Native App Development, iOS, Android, User Authentication, User Profile Creation, Chat & Messaging, Location, Offline, React Native, Microsoft SQL Server, Mobile App Development Country: United States click to apply via All jobs | upwork.com

Hello, I need a full stack developer to build a crypto wallet prototype which can have the following features. Ability to store crypto, nft, document, pictures, videos and notes Swap tokens on the eth network Send assets to beneficiaries on a certain date like a birthday Take a picture of the asset write a note to explain what it is and who you are leaving it to Ability to store passwords through a flat file Token integration to use app every month (Like a subscription based model). This token will need to be developed. Invite people to join the wallet and create a map of who has joined to form a family tree. I will also need a pre-sale ICO website to be built for the token. The budget is pretty strict as this is just a prototype. -Rohan Budget: $3,000 Posted On: December 07, 2021 23:51 UTC Category: Prototyping Skills:Blockchain, JavaScript, React, Solidity Country: Australia click to apply via All jobs | upwork.com

Hi! I have a web application that has some bugs. I need an experienced front end developer with expertise in React.js, Redux to solve those bugs. Bugs need to be fixed quickly and qualitatively. Hourly Range: $18.00-$30.00 Posted On: December 07, 2021 23:48 UTC Category: Front-End Development Skills:React, HTML, CSS, Redux, JavaScript Country: Ukraine click to apply via All jobs | upwork.com

В небольшую команду, работающую на аутсорс, ищем опытного full-stack разработчика. Необходим опыт работы с: - Node.JS не менее двух лет - React.JS не менее двух лет - CSS обязателен в рамках базовых навыков - Умение работать с SQL запросами как с помощью Sequelize так и в чистом виде - Умение работать с аггрегациями MongoDB, понимание в каком месте будет тормозить и как это решать. Hourly Range: $30.00-$40.00 Posted On: December 07, 2021 23:41 UTC Category: Full Stack Development Skills:Web Application, MongoDB, PostgreSQL, React, Node.js, MySQL, JavaScript, API Development, Database Architecture Country: Czech Republic click to apply via All jobs | upwork.com

We are looking for a full-stack developer to help transform Figma designs into an app for our startup. The tech stack is Ruby on Rails + React. You'll be working with a team of UX/UI designers, marketing professionals, another developer, and a former founder who exited from a tech startup. Looking to launch the product in Q1 - already have designs, user stories, and customer waiting list ready to go! Posted On: December 07, 2021 23:39 UTC Category: Full Stack Development Skills:React, Ruby, JavaScript, Ruby on Rails, AWS Application, React Native, PostgreSQL, Heroku Country: United States click to apply via All jobs | upwork.com

Looking for a React Native developer to create a mobile app. Hourly Range: $24.00-$45.00 Posted On: December 07, 2021 23:38 UTC Category: Mobile App Development Skills:React Native, JavaScript, iOS, React, Android, Mobile App Development, API Country: Canada click to apply via All jobs | upwork.com

We currently have an internal dashboard built with AdminBro which is a React based interface that connects directly into our Node.Js backend and MySQL database. We are looking to extend the functionality of the dashboard by adding an additional page that allows us to view, search and filter question and answer content posted on the application. AdminBro: https://adminbro.com/ Budget: $2,500 Posted On: December 07, 2021 23:37 UTC Category: Front-End Development Skills:React, JavaScript, CSS, HTML, HTML5, Node.js, Sass, API Integration Country: United States click to apply via All jobs | upwork.com

Front-end React developer needed to help develop a comprehensive application. Budget: $1,000 Posted On: December 07, 2021 22:34 UTC Category: Full Stack Development Skills:React, HTML, CSS, JavaScript Country: United States click to apply via All jobs | upwork.com

Hi! I have a responsive web design for a growing blockchain project that I need developed inside Webflow. It consists of a homepage and simple partner pages. We have a template in Webflow for you to start from and can work backwards. Future iterations and expanded content later. We have the complete design done and ready for your review. Looking for these deliverables: - First delivery (timed budget is 30 hrs) - Load speed is critical. Must be fast! - Fully responsive development - Interactions, animations implementation - Domain Setup (after dev completion) To apply for this project, please send me your portfolio. Additionally, tell me about your process of development to make sure sites are functional and fast as possible. From there, I'll send you the client information, design mockup, and collaborate to find who's the best fit. :) In your application, please include "Purple Giraffe" at the end. Those who do not bring their giraffe will not be considered. Hourly Range: $25.00-$30.00 Posted On: December 07, 2021 22:32 UTC Category: Front-End Development Skills:HTML, Animation, Website, Webflow, CSS, Visual Communication, Responsive Design Country: United States click to apply via All jobs | upwork.com

Looking for a dependable, proficient, and creative Node.js/ReactJS developer to code a simple web app that allows a user to submit a form, so that we can validate it, and produce an XML file for download. No database, but we expect local storage support. The app will be based on the HTML+CSS prototype that we provide, logic described in detail, and a sample XML file. Current prototype: https://ift.tt/3Ir7pmp Figma prototype: https://ift.tt/33adSC8 I will provide detailed specifications once I hire you. You get to choose the framework and offer your methods. A bonus will follow base compensation in case of quick and efficient execution. Additional services like documentation and enhancements are to be discussed. Я говорю по-русски.  Hablo español. Falo português.💡 Budget: $300 Posted On: December 07, 2021 22:28 UTC Category: Prototyping Skills:JavaScript, HTML5, Web Application, Node.js, React, Web Programming Country: United States click to apply via All jobs | upwork.com

Hello world! No... that's actually what I need, a Hello World feature. :) I have a brand new React Native app and I am looking for someone to help me with a custom native module I am building please. What I would like the app to do is to run a process in the background, without the app being open, that checks for another specifically named app to be opened by the user. If the background process detects this particular app is being opened it presents a hello world screen as a complete screen takeover. On the hello world screen there should be a "continue" button that, when clicked, will close the screen takeover. The hello world screen takeover needs to be a React Native component under the hood, so that eventually I can use all of Reacts UI abilities to make the takeover page interactive. Think a very rudimentary app blocker that can just be hard coded (it doesn't matter which particular app is blocked at this time) I imagine you would have to request accessibility permissions or something to that extent in order to do a screen takeover like that, but I'm not exactly sure. I have a fresh repo in GitHub that I can share access to. This app also uses the react-native CLI vs. Expo CLI because of the need for native modules. I've got a very basic start that integrates with the UsageStats android API, which from what I gather is the only way I would be able to determine if a particular app is open or not. Maybe there is a better way? I am a JavaScript developer and can assist you, but I do not know very much about the android or Java ecosystem, so that's where your expertise and experience would be very useful. Please send me a note if you'd like to learn more. Strong chance of continued work available to you down the road, but I'm just trying to build a proof of concept at this time. Thanks very much! Budget: $50 Posted On: December 07, 2021 22:22 UTC Category: Mobile App Development Skills:React, React Native, Java, JavaScript, Android, Mobile App Development, Native App Development, Phone, Android App Development Country: United States click to apply via All jobs | upwork.com

Hi! Looking for a developer who can configure the vercel server for our internal web app. The previous developer tried to configuring it, but it is not working. Should have experience regarding the Vercel web app deployment. I want this work done as soon as possible. No agencies, Individual Only. Thanks. Hourly Range: $13.00-$30.00 Posted On: December 07, 2021 22:20 UTC Category: Full Stack Development Skills:Web Application, Next.js, React Country: Germany click to apply via All jobs | upwork.com

Looking for an experienced back end developer to help evaluate needs and provide recommendations on best practices and strategies for using AWS as a back end for a progressive booking and customer management web application. It is critical that we determine whether or not Amazon Web Services can meet the needs of our use case in an economical and straightforward fashion. We will be going over flowcharts, documentation and prototypes in order to determine the best way forward in our development process. Ideally we will be doing this during December/January. The consultation may develop into a part time or full time position assisting with development. As it stands right now, the stack we envision for our application uses React and AWS AppSync/Amplify using GraphQL and an SQL database. If you have read all of the requirements and feel you are a suitable candidate, please start your response with 'Crystal Clear'. What is Required of candidates:          -The ability to communicate clearly in English     -The ability to clearly request information that you need to provide good advice     -Availability to hold active live meetings within the range of 7:00 AM to 8:00PM GMT     -Experience with booking and date focused applications     -Experience with customer service related applications(Potential for Real Time Chat)     -Experience developing progressive web apps through AWS/Appsync/Amplify     -Experience with applications that expose APIs to 3rd parties     -Expert understanding of AWS billing and it's risks as it pertains to our use case     -Familiarity with the use of both SQL and NoSQL databases     -The ability to translate business needs into a tangible back end architecture     -Familiarity with the advantages/disadvantages GraphQL concerning our use case Secondary considerations for candidates   -The ability to move beyond consultation and into part or full time development Hourly Range: $5.00-$120.00 Posted On: December 07, 2021 22:15 UTC Category: Back-End Development Skills:Amazon Web Services, SQL, Database, AWS Lambda, AWS Application, GraphQL, Amazon API Gateway, Web Programming, API, Amazon S3, Amazon EC2, Amazon Cognito, NoSQL Country: Canada click to apply via All jobs | upwork.com

Hi, We are looking for a senior frontend engineer who can work independently and has extensive experience in proper CSS (responsive design, flex, etc.) and React/Next.js. All the designs are provided in Figma. You would be working on a blockchain project: swappable.io We expect clean code and quick turnaround time. Experience in web3 (blockchain) is desired but not a requirement. Please send examples of your work as well. Hourly Range: $25.00-$45.00 Posted On: December 07, 2021 22:13 UTC Category: Front-End Development Skills:CSS 3, CSS, HTML5, JavaScript, React, HTML Country: Canada click to apply via All jobs | upwork.com

Looking for a Senior React Native developer to build the following front end pages from the attached figma designs. The pages will be used in an Android app, built with Android 10. (API 30) Timeline - Code must be done within 72 hours (3 days) of when the contract is accepted. I am willing to pay more for speed from a quality engineer. The attached Figma file includes each of the 30 screens that need to be built, and comments on where each button should go (click the speach bubble comment button if you don't see them) https://ift.tt/3pF2iXn Some screens are used in multiple flows. (see the bottom of the figma) The front end will need to hold a "state" variable that tracks which flow has been triggered, and navigates to the appropriate screen based on the current flow. That's it. Please DON'T work on any backend functionality. This is just the front end. The backend is not finished yet. Our plan is to launch the app Monday. Here is also the Github project a previous team worked on for this app. I don't care if you copy code from this project or start from scratch. Their designs did NOT match the Figma. If you use their pages, make sure to change them to follow the figma design. https://ift.tt/3ozEqEU Do -------- - Make every button and link clickable - Match the styling and layout exactly - Make the design responsive to different android screen sizes - Make every text field useable - Add error messages to all text fields where requested - Use a state variable to determine which screen to show next Don't -------- - Hook up the contacts page to the Google People API (We will do this after) Definition of success For this project to be code complete, I need to be able to download your Github on my computer, and use android studio to export all of the pages you've designed as an APK file that can be tested on my phone. Budget: $2,500 Posted On: December 07, 2021 22:07 UTC Category: Front-End Development Skills:React Native Country: United States click to apply via All jobs | upwork.com

My client is looking to create a promotion on their store to reward customers with a $25 eGift card when they spend $50 or more during a specific timeframe. I am looking for professional Shopify developers to pitch ideas on how to solve this problem. The solution must integrate fully with the purchase experience and be fully automated from start to finish. Hourly Range: $12.00-$20.00 Posted On: December 07, 2021 22:05 UTC Category: Ecommerce Development Skills:Node.js, React, Shopify Country: United States click to apply via All jobs | upwork.com

We are looking for a strong engineer who can help accelerate our vision of Speed and reliability for video creation. They are the most important features we can deliver to our users. We are looking for an engineer passionate about technologies such as Electron, NodeJS, and Chromium open-source projects to propel the stability and performance of Cloudapp's desktop application. It is built to deliver high def video messages instantaneously to their intended audience. In this role, you will help create and maintain our flagship app. If you are an active open source maintainer for the Chromium or Electron projects, We will happily sponsor your work. The Stack Our Desktop application uses Electron with custom encoding binary layers written in Swift and C++ for macOS and Windows, respectively. The application interfaces with Cloudapp's infrastructure via REST endpoints. The infrastructure currently runs in the AWS ecosystem. We are using Docker, Node, React, and Webpack within our web services. Your Responsibilities: You will lead the design and implementation of tooling that will help inform the roadmap of the desktop product You will lead the design and implementation of a new CI/CD system to increase adoption velocity by an order of magnitude You'll work closely with our Core Video team to understand the intricacies of and help iterate on our custom video encoding layer Write native node add-ons that enable us to run on a diverse set of devices across the world You will design tools and frameworks that empower the Desktop team to ship quickly and with confidence What We're Looking For 4+ years experience with C#/C++ in the context of large cross-platform C++ projects 4+ years experience with JavaScript and building highly performant low-level add ons and interfaces for Node.js Familiarity with Chromium or Electron A good balance between quick decision making and knowing when to ask for input Experience working with product that has gone through multiple product and architecture evolutions Knowledge and experience using platform-specific debugging tools (from Visual studio/wingdb/xcode/gcd to the specific console/logging tools of each OS) Passion for developing on Windows and macOS Hourly Range: $65.00-$200.00 Posted On: December 07, 2021 21:57 UTC Category: Full Stack Development Skills:C++, Docker, Node.js, React, webpack, Electron, CSS, JavaScript Country: United States click to apply via All jobs | upwork.com

Hello! We're looking for an extension to our existing team working on a Saas recruitment software. We plan to launch in March, so we need 2 full-stack JS developers to speed up the development. Front-end is built on React.js and back-end on Node.js using microservices. We use Clickup for the project management. The position is remote, anywhere in the world. Working hours are flexible. Agencies are welcome to apply, but each developer need to have the following skills: - Over 4 years of web application development experience leveraging JavaScript technologies and fraweworks: React.js/Redux, Node.js/Express.js (Nest.js is a plus) - Have proven experience doing frontend development in a professional setting working primarily with React - Have experience designing apps that interact with REST API endpoints - Care about the user experience and know how to build user-friendly web applications - Have experience with continuous delivery and automated testing - Familiar with modern engineering practices: code reviews, automated testing - Participate in an Agile team and be actively involved in the full software development life cycle The project is long-term and can last for years for the right developers as we will need to support the product after launch. Looking forward to your applications! Hourly Range: $25.00-$40.00 Posted On: December 07, 2021 20:29 UTC Category: Full Stack Development Skills:JavaScript, WordPress, HTML, Web Programming, HTML5, Phone, Python, Mobile App Development, Prototype, Java, UX/UI Design Deliverables, Microsoft SQL Server Service Broker Country: United States click to apply via All jobs | upwork.com