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.

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    58 Gefundene Jobs, Preise in EUR

    Hi, I am looking for one or two developers who are capable of android or hybrid app development of music software. The end products are an Android and phone app MVP which downloads, records (using mic), mixes, layers, writes, and plays mp3 files. Designers/engineers must have experience in musictech plugins and software. The flow is such that a user records a sound, selects two other .mp3/...

    €455 (Avg Bid)
    NDA
    €455 Gebot i.D.
    9 Angebote
    Coach booking platform 6 Tage left
    VERIFIZIERT

    A platform where every coach can create his profile page and stream online seminar / courses live. Customers who want to book a coach, can search on the platform and contact him. Or there’s an online seminar / course streaming on the platform which he wants to join. I don't know with what framework we can create this web platform. I do have a bit developer experience with Wordpress...

    €276 (Avg Bid)
    €276 Gebot i.D.
    14 Angebote

    Hello, I need help and support to debug an issue with a Graphql mutation which updates a boolean value only from false to true but not from false to true. Have no idea why that happen and need an expert which can spot the issue quickly to be able to fix it. The support need to be done via team viewer or any desk for remote connection as cannot share the project. The budget can be discussed depe...

    €25 (Avg Bid)
    €25 Gebot i.D.
    4 Angebote
    laravel project 6 Tage left
    VERIFIZIERT

    PLEASE READ THE REQURIMENTS BEFORE YOU BID NO MONEY RELEASE TILL WORK FINISH AND TEST ON MY DOMIAN updated and fix website 1- Create database and subdomain for each country 2- Registration by mobile number for each country restriction for use same login details for each country 3- RTL and languages functions 4- backend to be fix 5- SMS verification system 6- referral sy...

    €112 (Avg Bid)
    €112 Gebot i.D.
    31 Angebote

    I need an Android app. I already have a design for it, I just need it to be built.

    €130 (Avg Bid)
    €130 Gebot i.D.
    5 Angebote
    Backend (PHP, Symfony) 6 Tage left
    VERIFIZIERT

    Dear freelancers, I am acting on behalf of multinational company ‘Konstruktor’. We are looking for Backend Developers (PHP, Symfony)! What will you do: Web portal development Analysis of requirements and documentation for related systems Development of architecture and logic Search and test solutions. Integration with related systems Decomposition of tasks Scheduling deadlines Docu...

    €26 / hr (Avg Bid)
    €26 / hr Gebot i.D.
    21 Angebote

    I need support in migrating my WordPress ecommerce site to a new host. I also need someone competent on Wordpress web development to look at the current site to make sure the site doesn't break and functions well when I access the site for content editing. The website was developed and launched a year ago and the webhosting currently sits in the server of the previous web developer. During...

    €134 (Avg Bid)
    €134 Gebot i.D.
    52 Angebote

    Ищем специалистов бэкэнда, фронтэнда, фулстэк, тимлидов для работы в проекте по запуску стартапа маркетплейса на базе CS-Cart. Знание CS-CART - обязательно! Заинтересованы в долгосрочном сотрудничестве. Объемы работ приличные, большей частью для бэкэндщика, требуется разработка модуля для продажи товаров определенным, специфичным способом. Более подробно, какие именно работы требуются - в приложе...

    €2475 - €4124
    €2475 - €4124
    0 Angebote

    Check my app [Zur Anzeige der URL Anmelden]

    €17 - €140
    €17 - €140
    0 Angebote

    We are working on a food delivery app like Swiggy. The app is almost completed. Now we are looking to add one more Node/[Zur Anzeige der URL Anmelden] developer to speed up the process. The person must be really good at [Zur Anzeige der URL Anmelden] programming.

    €4 / hr (Avg Bid)
    €4 / hr Gebot i.D.
    14 Angebote
    need full website in REACT 5 Tage left
    VERIFIZIERT

    I need full site like [Zur Anzeige der URL Anmelden] front-end and back end and affiliate.

    €147 (Avg Bid)
    €147 Gebot i.D.
    18 Angebote

    I already have a the front ent. I just need you to build a dashboard to manage my app. It also connect through API

    €144 (Avg Bid)
    €144 Gebot i.D.
    17 Angebote

    I've had a dev team develop me a crypto app for the last few months. We are publishing to app stores and there are just too many issues. There are also features that this developer does not seem to have the talent to add, such as certain crypto exchange apis. I need help getting this in proper form and then building more features for V.2 immediately.

    €28 / hr (Avg Bid)
    €28 / hr Gebot i.D.
    27 Angebote

    About us: The considered candidate will be given more info regarding the company and website link. What we're looking for: Looking for a top-caliber freelancer/agency website front end and back developers who will revamp a nonprofit organizational site. The choice is yours whether to implement site improvements OR develop a new site (from scratch at your preferred CMS) if that makes it easie...

    €1887 (Avg Bid)
    €1887 Gebot i.D.
    58 Angebote

    Hi. - We use Cloudbeds (Property Management System) for Guest information. - We use Stripe to process guests credit cards. We have previously built and API via guests email and and SSL page, so that guests can pay their final balance for their holiday accommodation prior to guest arrival. This email has a "Pay Now" function, The guest clicks, then is linked to an SSL site, where the gu...

    €7 / hr (Avg Bid)
    €7 / hr Gebot i.D.
    7 Angebote
    Special morpg game 4 Tage left
    VERIFIZIERT

    Hi, We would like to create a morpg game, very similar to [Zur Anzeige der URL Anmelden] For more info on [Zur Anzeige der URL Anmelden], see these videos: [Zur Anzeige der URL Anmelden] The idea is to have an interactive scenario in 3D (instead of 2D) where people can interact the same way. Since this is a multidisciplinar task, we are looking for: a) Great back-end developers who can enable t...

    €2322 (Avg Bid)
    €2322 Gebot i.D.
    8 Angebote
    Not ubereat 4 Tage left

    Hello, I'm a french startup founder. I'd like to hire a web developer to build a website as an MVP. When we will get users and feedback from our MVP, we will search for funding and develop it further with more developers. This website is based more or less like Uber eat, but there is no restaurant or courier. It is a market place that links two kind of workers and let them sell somethin...

    €21 / hr (Avg Bid)
    €21 / hr Gebot i.D.
    12 Angebote

    Features to be included: code actions code completion definition diagnostics document highlight document links document symbols folding ranges formatting hovers

    €139 (Avg Bid)
    €139 Gebot i.D.
    1 Angebote
    Booking system for dry cleaner. 4 Tage left
    VERIFIZIERT

    Website: Laravel Niche: Tailor and dry cleaner. Type of platform: Order, booking and service Versions: Mobile and website. Sms provider: Twillio Pages: - Login (for admin) - Overview (Book appointment, Store (If they have more then one store they can select the store they want to see), Customer quick search, Appointments for the day) - Menu (dashboard, clientele, sales, book appointment, profile, ...

    €634 (Avg Bid)
    €634 Gebot i.D.
    88 Angebote

    Presento el Proyecto “Buildcoin” para desarrollar un front page (diseño web/plantilla ) y una app(imagen de la web) para incorporar una pasarela de pago de compra y venta de criptomonedas. Varios idiomas… español, portugués, catalán, ingles… Las funcionalidades de este proyecto deberán de tener la siguiente estructura.

    €300 (Avg Bid)
    €300
    6 Einträge
    update flutter app 4 Tage left
    VERIFIZIERT

    i have an flutter app, i need to add some update

    €37 (Avg Bid)
    €37 Gebot i.D.
    22 Angebote

    I need experienced Amazon MWS or Amazon SP-API Developer backend developer. I want to develop a Web SaaS Project for Dropshipping Sellers in Amazon. It is my preference to work with the developer who has done the backend development using mws in "java" or ".net" technologies. ***** I AM DEVELOPER AND I CAN DO IT ON MY OWN BUT I DO NOT HAVE TIME AND I NEED AMAZON MWS OR SP-AP...

    €426 (Avg Bid)
    €426 Gebot i.D.
    6 Angebote
    News App Development -- 2 4 Tage left
    VERIFIZIERT

    We're looking to create a brief-news application. Here are the requirements for the same
 1. A simple backend dashboard where writer can write store with title, image, content, link to original story and category. He can save draft or publish along with option to send notification for this article. 2. A mobile application that can display these articles and user can see the next articl...

    €187 (Avg Bid)
    €187 Gebot i.D.
    9 Angebote

    Hello, we are looking for somebody to create a FAQ chatbot. It should be a basic decision tree chatbot proposing the following 5 categories of frequently asked questions: General questions, payment, shipping, returns, other questions. It will then propose the corresponding questions to the user as per the ones shown on this page : [Zur Anzeige der URL Anmelden] We need to complete an existing ch...

    €1222 (Avg Bid)
    €1222 Gebot i.D.
    20 Angebote

    Need server-side development and setup for maternity care website similar to miraclemom.com. Functionality listed below: 1. eCommerce functionality to sell products (includes user login/registration, mobile number verification, payment gateway integration). Also need option to return or exchange products. 2. Ability to form chat groups for selected users: admin should be able to group register...

    €659 (Avg Bid)
    €659 Gebot i.D.
    24 Angebote

    I'm looking for someone to make a very simple minimum viable product of an uber like iOs app for exchanging medicine. It's like uber for medicine delivery. The app would need to be able to find other users near the person using it and allow them to set a meeting point. Users would select the medicine they needed and then send out a "flaire" (basically the same as calling a ride...

    €633 (Avg Bid)
    €633 Gebot i.D.
    35 Angebote

    we have a feed, a social app you can post a photo or video. we have an algorithm for the feed we have recognition code written for the photo/video and Audi *audio we dont have the algorithm written to score the post and compare it to the data of the user your job is to A.) determine data to be extracted by users from local device, B.) write the algorithm based on a scoring system. C.) go over the ...

    €973 (Avg Bid)
    €973 Gebot i.D.
    30 Angebote

    Hello freelancers. I need a java senior developer to design and develop a web server application in java. this system should established 2-3 endpoint and present many webservices. main function of system is financial processing. clients call the services from the other machines and Receive response. some configs should be dynamic for example [Zur Anzeige der URL Anmelden] files paths and they shou...

    €1865 (Avg Bid)
    €1865 Gebot i.D.
    28 Angebote
    Python developer for unit testing 3 Tage left
    VERIFIZIERT

    Looking for a python developer who has worked on unit testing using pytest. Bid if you can start immediately and have knowledge for it.

    €109 (Avg Bid)
    €109 Gebot i.D.
    15 Angebote

    I'm looking for a person who already has experience with (charles proxy) need to take request from the mobile app using charles and convert it to postman.

    €25 (Avg Bid)
    €25 Gebot i.D.
    2 Angebote

    We are hiring an experienced ML developer with complementary backend experience + Setup ML pipeline and ML server environment( ML flow & architechture) + Setup API Controller for endpoint access to ML models + Create data analysis ML model based on historical data + Create 3D image analysis ML model + Create 2D to 3D ML model

    €3704 (Avg Bid)
    €3704 Gebot i.D.
    5 Angebote

    This job is to create an API gateway for our financial app/website as a microservice (Docker container). Short summary: The gateway will have to accept REST requests from the app/website, perform authentication/authorization checks, and fulfil requests by delegating them to grpc-based microservices (which are already in place; creating these microservices is not part of this job). Long descripti...

    €1354 (Avg Bid)
    €1354 Gebot i.D.
    20 Angebote
    Middle backend java 3 Tage left
    VERIFIZIERT

    Мы находимся в поиске русскоговорящего фрилансера со знанием английского языка на позицию Middle backend java. Условия работы 40 часов в неделю при графике работы 5/2.

    €14 / hr (Avg Bid)
    €14 / hr Gebot i.D.
    4 Angebote
    Project for Michael A. 3 Tage left
    VERIFIZIERT

    Уважаемый Michael A, Я представляю интересы международной компании «Конструктор». Нас заинтересовала ваша кандидатура. Мы находимся в поиске фрилансера на позицию Middle backend java.Не могли бы Вы проинформировать меня, пожалуйста, какова Ваша месячная ставка при условии работы 40 часов в неделю при графике работы 5/2 (суббота и воскресение выходные), если Вас устраивают такие условия...

    €13 / hr (Avg Bid)
    €13 / hr Gebot i.D.
    3 Angebote

    We are looking to build a website similar to "onlyfans". We are currently using Yith/Woocommerce plugins such as membership/subscription etc. Please see the attached file " Plugins We Are [Zur Anzeige der URL Anmelden] " to see a full list of the wordpress plugins we are using. We need to allow users, after creating accounts to be able to click on a button " become a creat...

    €30 / hr (Avg Bid)
    €30 / hr Gebot i.D.
    38 Angebote
    Backend for Kiosk App (Android) 3 Tage left
    VERIFIZIERT

    I have a kiosk android app that i purchased from codecanyon. I am looking for an android app programmer to modify it. I need the app to connect to a backend (which you will create), in order to confirm that the subscription is still active, in order for the app to continue to run and be operational. This is how the workflow will be: Initial Install of Kiosk App -> 1. User starts app. 2. App w...

    €243 (Avg Bid)
    €243 Gebot i.D.
    25 Angebote
    Backend service 2 Tage left
    VERIFIZIERT

    I want to create an app in which the app gives a user a random workout depending on the user's choices. - I would need admin control - login/register/subscription method - create workouts method - history and stats

    €465 (Avg Bid)
    €465 Gebot i.D.
    25 Angebote

    We are looking for freelancers to work with our team on the following scope of the development of an annotation server based on Hypothesis git. here are most of the details, please feel free to ask about it after read the following: Source : [Zur Anzeige der URL Anmelden] Info: [Zur Anzeige der URL Anmelden] Pyramid: [Zur Anzeige der URL Anmelden] - [Zur Anzeige der URL Anmelden] Hypothesis is ...

    €21 / hr (Avg Bid)
    €21 / hr Gebot i.D.
    14 Angebote

    Hi freelancers. I want java application to simulate an ATM behavior. this simul should send transaction to a card switch. user choose the txn and input mandatory data like card number, password, timeout and .....

    €399 (Avg Bid)
    €399 Gebot i.D.
    7 Angebote

    /JOB Description As MagniFinance (that is an online invoicing software approved by the Portuguese Tax and Customs Authority), we want to have an integration of our invoicing API with Prestashop to allow online stores that uses PrestaShop to invoicing automatically when a customer buy something online. To do this, you should create/have a sample sandbox PrestaShop account to test and present the r...

    €368 (Avg Bid)
    €368 Gebot i.D.
    5 Angebote

    i look for someone who can work in a project website for shipping and wearhoussing , this website consiste a client space like a dashboard who can give a client to manage our colis and facturate i don't know wich technologie can i use and who can i start if someone can help and work with me give me a proposition

    €221 (Avg Bid)
    €221 Gebot i.D.
    16 Angebote
    Backend Web admin development 2 Tage left
    VERIFIZIERT

    A app for electricians by an electric company. Electrician scan qr code on their mobile app and get credited bonus amount. Like 5 10 25 50 100 etc. The credits are reflected in their wallet. They can withdrawal to their paytm wallet(Less transaction fees ) or place a bank transfer request subject to minimum requirements. Also electricians can participate in a scheme and win exciting gifts like mob...

    €482 (Avg Bid)
    €482 Gebot i.D.
    4 Angebote

    I need experienced Amazon MWS or Amazon SP-API Developer backend developer. I want to develop a Web SaaS Project for Dropshipping Sellers in Amazon. Do now waste time if you did not use Amazon Merchant Web Services (MWS) before.

    €660 (Avg Bid)
    €660 Gebot i.D.
    4 Angebote
    smart tv app 2 Tage left

    we want to design smart tv app

    €71 (Avg Bid)
    €71 Gebot i.D.
    5 Angebote
    Personal information 2 Tage left
    VERIFIZIERT

    I have a problem with personal information, because when visitors visit profiles with different languages, personal information is mixed up. The administrator translates this personal information into multiple languages, and should normally be displayed in the visitor's language. But somewhere they need to be connected, because for now they only work correctly in the same language, but when t...

    €191 (Avg Bid)
    €191 Gebot i.D.
    18 Angebote

    I am a designer looking to get some development work completed for a website that will be built in Webflow. The website will need to have the same functionality as the "UNIT PRICING HISTORY" table on this page: [Zur Anzeige der URL Anmelden] Currently, the client uploads a cvs file of the data (each entry is a separate csv file), and when users select a date range, the data appears in...

    €266 (Avg Bid)
    €266 Gebot i.D.
    22 Angebote

    We want to add new features on existing admin panel (GOLANG) 1/Automatically reassign chat to active workers (if some workers does not answer within 5 minutes max) 2/set up 75 characters per message /for workers(operators)

    €115 (Avg Bid)
    €115 Gebot i.D.
    9 Angebote

    Frontend dashboard project + ensuring backend API controllers to support the dashboard. MERN stack. + Setup dashboard system for data visualisation, timelines, hdata history overviews, settings adjustment, production administration, instance management + Integrate API data into dashboard from factory hardware + Backend structure for connected dashboard to other parts of infrastructure, database...

    €2050 (Avg Bid)
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    78 Angebote

    Our new startup company is looking for a web designer/developer that is able to create a really modern, fresh and engaging website that: - Must showcase our products using HD photo’s and video's (provided by us) - Must show a calendar, availability, take bookings and allow the user to checkout - Must trigger SMS messages when a phone number is provided (as part of the booking process) ...

    €14 / hr (Avg Bid)
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    36 Angebote

    Hello! I am a graphic designer and I own a handmade brand of bags and clothing where I make everything myself out of natural and recycled materials! I need someone to work with me to launch the new website! I can provide graphics and everything needed!

    €50 (Avg Bid)
    €50 Gebot i.D.
    8 Angebote

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