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    502,293 how to become a backend developer jobs found, pricing in USD

    Make a book library web app using Vue.js as front end and Node.js as backend and show content fetching api from any random book website and show it to your web app.

    $134 (Avg Bid)
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    4 bids

    I'm looking for a BE developer to help build API for an e-commerce SaaS project. Requirements: - Have knowledge of Typescript/Javascript - Have knowledge of Domain-Driven Design (DDD), Dependency Injection is a big plus - Experience with GraphQL frameworks like Apollo - Back End: NestJS - Database: MySQL 8.0, ORM like Prisma Tasks: - Implement API for product search and filter - Build API integration with : get product attribute by category ID, sync product with attribute data Will discuss more in detail after reviewing the proposal! Thanks

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    Looking for a Lead Developer in Reinforcement Learning

    $200 (Avg Bid)
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    1 bids
    odoo website developer -- 2 6 days left
    VERIFIED

    hi there i need a odoo website developer who can work faster and swifter. you need to be a full-time freelancer

    $3 / hr (Avg Bid)
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    1 bids

    Hello. I have an app made on iOS that basically allows me to login to Facebook, track nearby deals by taking a picture and sharing it on Facebook. It's already 70% made. It's already mostly finished so this shouldn't take longer than 3-4 days to complete. Add a reward system, basically the more locations the user visits little by little they add points until they get a reward when they complete the points - the reward will be a simple image (not on the existing code something similar already exists) I already have the code, which will be sent for you to modify. Note, you will be working with a Cpanel and mostly the backend, although you will be making a mockup UI for the frontend. API knowledge i...

    $140 (Avg Bid)
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    ...logged in. Here are the basic functions that I want to have on this first stage. 1./ Account signup/login page 2./ Home page. This could show account name, wallet balance, game stats etc. 2./ One Playable game with 2 player mode 3./ A game wallet (not crypto yet) that can send and receive ‘gbp/usd’ when you win or lose. Once this basic MVP working good, then I will definitely keep going with the right freelance developer on this project. For interview process, there will be 3 questions that you are gonna cover on your proposal. 1. can you show me the 2 player mode Tetris game working for the signed users on your local device testing - if so, by when? 2. I do not want fancy design at this moment, but you will do basic designs of how account...

    $181 (Avg Bid)
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    6 bids

    Kindly message me if you have experience on this aspect

    $19 / hr (Avg Bid)
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    11 bids

    Hello, I'm looking for a developer who are familiar with Next.js. The current project is built on the and it is a Video Editor and player. Already done the Proof of the concept version, we need to add more functionalities with you. If you're good with and implementing the functionalities then we can move for long term, please give me your offers, Thanks

    $15 / hr (Avg Bid)
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    Angular developer with skill on the Angular 8 or Angular 9 is required to handle a existing project. Need to work on the weekly tasks allocated and interact with the client.

    $2 / hr (Avg Bid)
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    1 bids

    I need to develop a mobile application with the following requirements: Development Language: Backend : nodejs Front: React Native or Native 1 - Create professional wireframe 2 - Create Backend (English + Arabic) 3 - Develop Frontend (English + Arabic) 4 - Quality Assurance full test All above is a must, in addition to Arabic speaker developer is a must all requirements are mentioned below in the sketch wireframe: kindly post your final price and timeframe I will contact shortlisted bids.

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    Please read the Google Doc carefully for details and follow the requests on Page 1, 2, 3 and 4

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    ...logged in. Here are the basic functions that I want to have on this first stage. 1./ Account signup/login page 2./ Home page. This could show account name, wallet balance, game stats etc. 2./ One Playable game with 2 player mode 3./ A game wallet (not crypto yet) that can send and receive ‘gbp/usd’ when you win or lose. Once this basic MVP working good, then I will definitely keep going with the right freelance developer on this project. For interview process, there will be 3 questions that you are gonna cover on your proposal. 1. can you show me the 2 player mode Tetris game working for the signed users on your local device testing - if so, by when? 2. I do not want fancy design at this moment, but you will do basic designs of how account...

    $30 - $250
    Sealed
    $30 - $250
    2 bids

    I have a food delivery app backend in laravel, I would like someone to transfer me to a new dedicated server. Thank you

    $41 (Avg Bid)
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    19 bids

    We have a simple php, javascript, mysql FAQ widget we want to improve. We need some backend tools to make this admin tool work better for our team. Create admin page that allows for managing FAQ questions and answers. Should use WYSWYI editor that allows images, links Admin page for managing to support tickets (view, reply, common response templates) Admin page for updating widget configuration: Contact details (email credentials, email address) Edit email template, Theme settings (color, font) Create FAQ display page that shows single FAQ question / answer. Include Navigation for looking at entire FAQ. Include Related topics (same FAQ category) Budget is max $250. Please do not bid if your bid exceeds $250.

    $189 (Avg Bid)
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    My website is currently with word press and I would like to migrate it to big commerce.

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    I have an email alert parsing platform that was built with Laravel, Mongdb and Vue. I am looking for a developer who can take the existing live project and then add new functionalities to it. The developer should have rich experience with Laravel, MySQL, Mongodb, Vue and third-party API integration. The core part of this project is email parsing, so the candidate should also have strong experience in parsing emails and text contents. When you make a proposal, 1. Please specify your experience with Laravel, Vue, MongoDB and third-party API integration. 2. Share your github account. 3. Share some websites that can show your skills. 4. Share a couple of code files for each tech stack required for the projects.

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    ...experience platform - Sustenability behavior change. Nest JS - currently our Typescript backend uses and MySQL as main stack items. You will need to: 1. Game room refactor Current implementation is custom made directly with socket.io. replace it with Colyseus - requires changes to database logic and how game experiences are running Here it will require also changing experience game logic on frontend. 2. Socket-io REDIS scalability to work with Colyseus - make multiple servers work together in the same time Write jest tests. 3. Security endpoints Need to separate all calls to the backend api and secure with guards. 4. Separate applications for each logic Admin, Dashboard

    $22 / hr (Avg Bid)
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    Swift iOS developer required 6 days left
    VERIFIED

    We are looking for a developer who is willing to examine tasklist and complete them in the quickest but most professional way possible so only if you are very experienced please apply we have an ongoing app which needs to be finished and we are past our due time write "I am capable of finishing this" so we know you have read the bio

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    I have some projects. I need a freelancer who is knowledgeable to help me.

    $7 / hr (Avg Bid)
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    The spring backend part is mostly done, need to create front end and connect to it

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    Need react developer eith web3 integration

    $167 - $500
    Sealed
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    Hello, I need an expert android studio java developer. There has to be a developer who can solve my problems and make the improvements I want. We will work for multiple tasks.

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    I am looking for a person who can teach me how to develop audio/midi multiplatform apps. I think flutter would be the best one, but I am not sure about that yet. So I need some advices from expert freelancers. I've a good HTML, JS and PHP knowledge but I've never been learning other programming languages. It would be nice if the person I am looking for is able to speak Italian as well.

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    ...Years of IT in Java/J2EE who has hands Remote system working, 8 Hrs in a day and 6 days in a week. • Strong experience with full SDLC - Requirements, Design, Development, Testing and Deployment • Should able to handle team • Should have Java/J2EE design experience (Low level and High level design) and architect exposure • Ability to act as the go to person for the team and be able to guide the team members in problem solving, designing • Experience of Java 8.0 and J2EE • Strong Experience with HTML 5, CSS , Ajax, DWR (Direct Web Remoting), Javascript, Jquery, JSTL, Spring, Spring boot, Oracle/SQL Server , Hibernate, drools, Eclipse, Linux • Experience in Web Services (SOAP and RESTful) using JAXB/JAX-RS &bull...

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    Title: IOS Developer Target device is iPhone 12 Pro Max Location: Torrance, CA Onsite when needed Requirements 6 to 8 years of iOS app development experience. #1 - #3 are required Camera APP parameters retrieval and adjustments Len selection (from available hardware lens on the camera) Analog/digital image amplifications (Zoom in/out) Exposure adjustments Image enhancement Focus position and focus distance 2. Dynamos Barcode reader APP SDK optimizations and integrations to above Camera APP parameters. Panorama scan Color channel separations to emphasize dark color background 3. UI GUI To display real-time cassettes map/locations inside the basket/magazine with barcode read, missed read, basket/magazine void, etc. ...

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    Mobile Developer 6 days left

    Mobile development - React, React Native,...–(Redux, Mobex etc) Develop engaging, performant and bug free mobile application and unit test on both Android and iOS platform. Responsive design and UI/UX best practices Audio,Video Live Streaming and Chat integration along with payment Stripe, Apple and Google pay Integrate with Restful APIs and work with GraphQL Version control Software: GIT Collaborate with existing developers and contribute to new product features. Write native modules and work on third party native modules Familiarity with test tools, Jest, Mocha, Ava Some Java Knowledge for extending native modules on Android. Some Objective C, C++/Swift knowledge for extending native modules on iOS. Knowledge of type checking, unit testing and monitoring tools like Crashlyti...

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    NFT Marketplace  Solana Based NFT Marketplace  Intuitive, user-friendly decentralized marketplace  Application will allow users to explore and buy NFTs using Solana  Wallet Integration (Phantom/Solflare/Sollet)  Users can buy NFTs, make offers on NFTs  Profile page allows user to see all NFTs in their wallets, listed NFTs, offers made and received, and past activity.  Admin Panel – allow us to see statistics of all NFT collections edit transaction fees for each etc. ( to be discussed further) Timeline 1-1.5month Send me past project references! Looking for a developer to start immediately!

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    Hi, I’m a new business and I’m looking at getting a Shopify website built. I’m very familiar with the back end of Shopify as I used to look after this for my last company. The bits I can’t do is the graphic integration into a live feed. This requires XML coding for the live pricing and quantities. The Company I’m going to use for the live feed (drop shipping) is I'm able to import all the inventory (images, prices, etc.) but it's not on a live feed, resulting in products selling out or prices changing without me knowing. There is an option for coding in the back end and i was wondering if anyone could be of help Drop your offer with portfolio and method you can use to complete this projec...

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    Hardware Electronics Developer required to assemble and solder the components of a VR prototype in Dehradun & build the CAD Design to be 3D printed urgently

    $66 (Avg Bid)
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    Looking for a freelance Delphi developer for a long time ongoing project . Shud be able to work on Delphi and basic knwledge of JAVA to convert an app.

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    Need a front developer to make the project based on Discourse () - only front-end. For the back-end we have other developer already. No teams, no agencies, no shitty-coders, individuals only. 5+ years exp Required Experience: Javascript, Typescrpt, React, HTML, CSS, Github. Preferred Experience: Discourse, React or next, Docker. The code should be clean, DRY, object oriented, use the best coding practices(), good formatted, don't break MVC principles: controllers are for routing (REST), models/services are for the logic, templates are for html, don't mess javascript and css with html - should be in separate files included, bootstrap for css, use background jobs for the long running processes like sending

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    Looking for Delphi Developer who knows Java to convert an app. Should be willing to work on a monthly basis. It will be long-term work. Prefered INDIANS ONLY

    $400 (Avg Bid)
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    I need a C/ C++ developer. 6 days left
    VERIFIED

    I need you to make some changes in an existing project.

    $111 (Avg Bid)
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    Hello, I need an expert android studio java developer. There has to be a developer who can solve my problems and make the improvements I want. We will work for multiple tasks.

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    20 bids

    ...logged in. Here are the basic functions that I want to have on this first stage. 1./ Account signup/login page 2./ Home page. This could show account name, wallet balance, game stats etc. 2./ One Playable game with 2 player mode 3./ A game wallet (not crypto yet) that can send and receive ‘gbp/usd’ when you win or lose. Once this basic MVP working good, then I will definitely keep going with the right freelance developer on this project. For interview process, there will be 3 questions that you are gonna cover on your proposal. 1. can you show me the 2 player mode Tetris game working for the signed users on your local device testing - if so, by when? 2. I do not want fancy design at this moment, but you will do basic designs of how account...

    $118 (Avg Bid)
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    6 bids
    Laravel developer needed 6 days left
    VERIFIED

    Hello all, We are looking for a php laravel experienced web developer to customize/develop a booking platform to a pet care platform. The project concern to back-end and front-end development. I will review you bid and contact your personally with the full project documentation for you to review in detail.

    $2331 (Avg Bid)
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    87 bids
    Need a Solana developer 6 days left
    VERIFIED

    I am looking for a senior-level blockchain developer who is experienced with Solana. Start your bid with "Solana" please. Thanks.

    $561 (Avg Bid)
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    30 bids

    I am looking for someone that can make a similar a front end. We will be building all the backend contracts but need a good looking front end similar to All pages and buttons must be similar. Thanks

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    Hello, I'm looking for an individual Python-Flask expert who can help with our backend enhancements in a long term. We're using PostgreSQL as Database I can share more in detail with shortlisted candidates in private message so please include your unique and specific Python Flask experience in your proposal. Thanks

    $20 / hr (Avg Bid)
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    d3 developer needed 6 days left
    VERIFIED

    d3 developer needed for a single chart

    $8 - $20
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    0 bids
    python developer 6 days left

    Hi anyone good at python can bid on this project

    $375 (Avg Bid)
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    Hi, I am looking to see if there are any Java developers who are looking for work with a cyber security company. We are based in the UK and offering 25USD/hour to work on a Java security based application. This will be contracted out on a daily rate 8 x 25USD however, the duration of work could be 2 months+. The developers must be very experienced and highly skilled. English language must be good. Must be able to work UK timezones. Would you be interested or know anybody who is interested? Thanks Sam

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    Only for developers with blockchain experience - Need to Customize the contract - Smart Contract need to be Opensea compatible - Website integration Wallet ( on react.js/next.js) - Make react.js/ website online - Upload 10’000 NFTs in your application please share links to your most recent work, also share the timeline and budget

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    backend dev needed -- 3 6 days left
    VERIFIED

    i need a backend developer for an urgent django project.

    $56 (Avg Bid)
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    ...logged in. Here are the basic functions that I want to have on this first stage. 1./ Account signup/login page 2./ Home page. This could show account name, wallet balance, game stats etc. 2./ One Playable game with 2 player mode 3./ A game wallet (not crypto yet) that can send and receive ‘gbp/usd’ when you win or lose. Once this basic MVP working good, then I will definitely keep going with the right freelance developer on this project. For interview process, there will be 3 questions that you are gonna cover on your proposal. 1. can you show me the 2 player mode Tetris game working for the signed users on your local device testing - if so, by when? 2. I do not want fancy design at this moment, but you will do basic designs of how account...

    $30 - $250
    Sealed
    $30 - $250
    3 bids

    Hello Everyone I need a java developer for one of my easiest project related to GUI and simple functions. I have all the details with me. let's chat and i will share everything. thank you

    $8 - $47
    Sealed
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    6 bids

    Java and spring boot developer required for working for a project

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    EXPERT HTML DEVELOPER 6 days left
    VERIFIED

    We are looking for an expert HTML Developer. In this project, you will be creating multiple HTML screens + Modals from the Figma provided designs. Must be bootstrap 5 + JQUERY expert. The screens you develop must be responsive. You must have at minimum 4+ years of experience and must be super attentive to details. Must speak fluent English. Results must be pixel perfect. Only professionals need apply.

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    Basically, I want a system where I have sellers and their customers. I assist sellers to make a basic online shop for them to share with their customers. Details on chat.

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    Our company is going to implement a simple NFT mint. The artwork is ready. The website is available, with only basic web3 integration. Your job is to create / provide a smart contract and plug it to the front-end. It is on an ethereum layer 2, so the contract will be in solidity. There is no element of randomness, it's a single picture. There is a finite amount of mint, after which no NFT can be minted again. Also needs to be transferable.

    $630 (Avg Bid)
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