Backend Development Jobs

Backend code is the part of a website or application that isn’t visible to the user. The code is a behind-the-scenes part of development, requiring a high level of competency regarding coding and the server that is being used. A backend developer works on the implementation and configuration of systems, and thus provides the building blogs for a website or program.

Na podstawie 154691 ocen klienci oceniają Backend Developers 4.84 nas na 5 gwiazdek.
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    31 znalezione projekty, cennik w USD

    Backend for a website An online website built in angular. Its going to be an gaming website. no need fr gaming implementation rather APIs for management. for reference visit this site it needs following backend features: 1. Login using mobile number and OTP everytime 2. After successful login call API should send details of user 3. Create, Read, update, delete operation for games played Thus it will have database creation as well APIs implementation Please take reference of the above mentioned website for more details.

    $153 - $459
    $153 - $459
    0 składanie ofert

    My project is nearly done but I have issue with cookies in vue and couple small tasks, I need someone with ecommerce experience on vue and laravel. This is fully custom project and I need only back-end development. Only experts please with examples with above technologies. Preferred single freelancer and potential long-term project work

    $23 / hr (Avg Bid)
    $23 / hr Średnia Oferta:
    39 składanie ofert

    The project is to create a virtual co-browsing application, allowing multiple users to interact with a remote browser, embedded in a browser. Users need to be able to request a remote browser on demand. The remote browser will only exist for the duration of the user session. After that the remote browser session needs to be persisted and the instance stopped. Don't worry about the front-end application / user interface - I already have a browser-based frontend app that this will plug into. This project consists of 3 parts: 1. Client side remote browser (client) - Running in a client browser 2. Server side browser (backend) - Running in a container / virtual machine 3. Infrastructure to request a browser (infrastructure) - Running backend instances in a data center Please r...

    $45 / hr (Avg Bid)
    $45 / hr Średnia Oferta:
    19 składanie ofert

    We are a small central Europe chipboard business looking for a professional Full Stack web developer to code a custom website from scratch. Our two primary needs are: 1. Improve the UX and IU. 2. Create a minimalistic, clean design. Requirements: • English - C1 or Native (not required if proficient in Slovak or Czech language) • Expert in HTML, CSS, JavaScript, and PHP. • Well experienced with UI, UX and Graphic design • Creative and Analytical thinking You will be closely cooperating with one of our employees. If you consider yourself a creative thinker and are not afraid to take challenges, don't hesitate to contact us!

    $3216 (Avg Bid)
    $3216 Średnia Oferta:
    90 składanie ofert

    Need a professional Laravel PHP, fullstack, frontend, backend developer to "Fully Customize" a Script Pay $70

    $55 (Avg Bid)
    $55 Średnia Oferta:
    82 składanie ofert
    Backend Development services needed 5 dni left

    I need someone who can work on our web app development. Long term work. Startup company.

    $124 (Avg Bid)
    $124 Średnia Oferta:
    42 składanie ofert

    We're looking for a full stack developer who has excellent communication skills. The role is to work with our clients and developers to gather requirements and collaborate in development. Minimum Requirements - 3+ years experience in development - At least one of the following: Node, .NET Core, Java/Spring, Django, Ruby on Rails - HTML5, responsive CSS frameworks like Bootstrap or Tailwind, frontend Javascript frameworks or libraries like ReactJS - Native/Fluent English Bonus - Previous experience working as a project manager, or a technical consultant. Benefit Perks - Hourly rate: 50 - 70 USD / hour - Part-time, Flexible timing Duration: 1+ year

    $48 / hr (Avg Bid)
    $48 / hr Średnia Oferta:
    80 składanie ofert

    I'm searching for a python dev with strong experience in trading. Understanding most aspects of trading. ` We want to create a python API with our name for Bitmart. Mostly about 80% of their main functionality (Spot and Futures). More nuances I will after your proposal.

    $556 (Avg Bid)
    $556 Średnia Oferta:
    22 składanie ofert

    I need help to compile again becausewe forgot to add 2 features. Please write me if you can start right now.

    $150 (Avg Bid)
    $150 Średnia Oferta:
    21 składanie ofert

    By selecting the "Read More" button it should prompt for a payment of INR 7 to access the complete article All payment modes should be available for the user such as UPI, NetBanking, Debit card, Credit card Payment interface should be compatible with android, ios. Payment interface should work in websites also Users anywhere in any country should be able to make the payment and access the article. For other countries other than India, which has high currency value than Rupee they should pay 1$ and access the article For other countries other than India , which has lower currency value than Rupee they should pay equivalent to INR 7 and access the article.

    $102 (Avg Bid)
    $102 Średnia Oferta:
    9 składanie ofert

    I need help to compile again becausewe forgot to add 2 features. Please write me if you can start right now.

    $148 (Avg Bid)
    $148 Średnia Oferta:
    22 składanie ofert
    Fifth time round 3 dni left

    $30.00 – 250.00 CAD Looking for expert on Payment Gateways Please do not give me a fake or lead estimate. I value honesty and not games. If you just copy paste my request it shows me you did not read it. Potential for more work after this. This is not a Wordpress site. It is a full script. Similar to Kick Starter. It was redeveloped in 2018. First made in 2010. You will need PHP/CAKE2, HTML, CSS, Redhat, Backend and Front end Developer Experience. 1. Change the projects framework so that projects no longer end or need to end for a payment to happen. a. Projects should be able to end if they are deleted or cancelled 2. Payouts to happen every 7 or 14 or 30 days. Continuous. a. The 7 days, 14 days, or 30 days are to be selectable by user 3. Admin can override the 7, 14 or 30...

    $150 (Avg Bid)
    $150 Średnia Oferta:
    36 składanie ofert

    I want a e commerce website for my business which include payment integration

    $363 (Avg Bid)
    $363 Średnia Oferta:
    38 składanie ofert
    compile a go app 2 dni left

    I need to build a go app again because i have an issue with forward messages. we are starting and we will need a long term dev.

    $148 (Avg Bid)
    $148 Średnia Oferta:
    26 składanie ofert

    I need full time PHP - Laravel & CI Developer, who can work full day and 6 days per week, I have multiple projects of mobile apps.

    $394 (Avg Bid)
    $394 Średnia Oferta:
    31 składanie ofert
    Git Help simple task 2 dni left

    I will pay $10 CAD only It’s a simple Git related help Max it will take 2 hours

    $8 / hr (Avg Bid)
    $8 / hr Średnia Oferta:
    23 składanie ofert

    I would like to have an electronic components distribution website, Please read description document it has most of the features that I am looking for. Please provide examples similar that you have worked on.

    $2126 (Avg Bid)
    $2126 Średnia Oferta:
    146 składanie ofert
    build go app 2 dni left

    I need to build a go app again because we have an issue.

    $183 (Avg Bid)
    $183 Średnia Oferta:
    30 składanie ofert

    Pharma supply chain optimization with Ethereum Virtual Machine Nodejs for backend, Solidity for smart contract and Reactjs for frontend

    $834 (Avg Bid)
    $834 Średnia Oferta:
    59 składanie ofert
    vet chat web site 1 dnia left

    its service help to connect pet owners with vet through chat, pet owners can book a date and time and then pay the fees.

    $19 / hr (Avg Bid)
    $19 / hr Średnia Oferta:
    89 składanie ofert

    I have home made app built in Flutter and admin panel PHP Laravel I need some modifications on it admin panel + Backend

    $174 (Avg Bid)
    $174 Średnia Oferta:
    204 składanie ofert

    Hi, I plan to build a MVP to raise funds from VC's. I am looking for a fullstack developer who can help build build the frontend and backend of the MVP. There is also a great possibility to also share equity if things go in the right direction. Some component of the SaaS application deals with Calendar widget, creating a typeform like application (user surveys like microsoft forms or google forms), email and url forwarding and callbacks. Track those surveys in a connected way like in a Graph DB. Also show Analyticsm Data visualization via charts that can be clicked with drill in functionality. The tech stack has not been finalized yet and we are open. We would like to use GCP for the deployment. We use Google workspaces to collaborate.

    $624 (Avg Bid)
    $624 Średnia Oferta:
    60 składanie ofert

    We have a project for laravel, that requires a freelancer who can work from our office in Ahmedabad Gujarat. We are ready for a monthly contract.

    $726 (Avg Bid)
    $726 Średnia Oferta:
    24 składanie ofert
    Mobile APP Design -- 2 23 godzin left

    Solehunt Web based app Social networking for the sneaker/ culture community Job Description: Provide the layout for Solehunt 2.0, Contractor will be given a base plan for what the web based app design. Map out the layout of the Web based application/Mobile Application with detailed instructions to Front end Programmer of functions between each respective functional button/screen. Requirements: - Figma or similar* - Github* - Jira* - Relevant work experience (or portfolio of previous software design)* - Experience with Agile teams (nice to have) Linkedin? Employer? Portfolio?

    $2446 (Avg Bid)
    Projekt z Umową o Zachowaniu Poufności
    $2446 Średnia Oferta:
    62 składanie ofert

    I Need a Automation Bot to automatic answer quotation on every query order of a website, need livestream updates Will talk more details and share the website to you privately

    $158 (Avg Bid)
    $158 Średnia Oferta:
    27 składanie ofert
    UI integration with backend 17 godzin left

    ui will be the same and I want to build backend and api integration on ui. frontend link :

    $106 (Avg Bid)
    $106 Średnia Oferta:
    15 składanie ofert
    Need web developer 16 godzin left

    I want to make full working website of kofejob theme. i have source code of this template. frontend :

    $93 (Avg Bid)
    $93 Średnia Oferta:
    20 składanie ofert

    Need to move the backend from Firebase to MongoDB to save on cost.

    $15 / hr (Avg Bid)
    $15 / hr Średnia Oferta:
    71 składanie ofert
    Explicit Filtering Phase -- 2 Zakończone left

    Explicit Filtering Phase project as discussed in chat for phrase detection and resultant redirect.

    $470 (Avg Bid)
    $470 Średnia Oferta:
    29 składanie ofert

    Hello! I need someone to build this site for me, ideally if you already have experience in this industry. As a reference I can offer already finished leaked source codes. (needs to be integrated with Bitcoin payment gateway, and I don't want to redirect users, I want it to be displayed everything on my site) (I will provide Bootstrap frontend)

    $223 (Avg Bid)
    $223 Średnia Oferta:
    11 składanie ofert

    Hello, We are looking for someone to create a KUCOIN FUTURES trading bot The bot should be able to execute orders in real time, for us to be able to select the token, and have all the many options as attached on the images. You can visit and open a free account at So you can see what we actually need. So for example: ETH USDT if the price decreases by 3% within 15 MINUTES BUY $1,000 as a LIMIT ORDER If the price INCREASES 2% SELL or if the price DECREASES 2% SELL ETH USDT if the price decreases by 10% within 1 HOUR BUY $1,000 as a LIMIT ORDER If the price INCREASES 4% SELL or if the price DECREASES 4% SELL Different options See attached images of examples

    $1100 (Avg Bid)
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