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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    Hello, Freelancers. I received a message from face that implement facebook conversation api. I don 't know well about that but I am very interesting for that. What should I do for that? If you know about this, please contact me. Thanks

    $33 / hr (Avg Bid)
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    DevOps Enginner 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Need experienced DevOps engineer to troubleshoot our web based platform built using MERN stack. Our website crashing when processing browser refresh (F5) multiple request giving 502 Bad Gateway error. Experience with MinIO on Kubernetes would be helpful as we are interested to explore scalability options.

    $18 / hr (Avg Bid)
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    Build an Open authorization token gateway (Web3) to connect MetaMask wallets that own 577 unique ERC721 NFTs (Already Minted on Opensea, none sold – Can re-mint elsewhere if needed). Token holders will be able to gain access to an upload feature that connects to a database allowing users to upload images, text and URLs that display on specific locations (mapped by coordinates) on the front-e...

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    No companies, individuals only Your profile: Young, talented, efficient, you are looking for a challenge. We are a remote team working on interesting innovation projects and are passionate about our job. We enjoy what we do and we do not count our hours but we measure our quality with happy clients and successful projects. We want to be successful with you and grow together! We are looking ...

    $50 / hr (Avg Bid)
    Обраний
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    All in Night -- 3 6 дні(-в) left

    Desarrollar servicios rest api que interactúen con un app mobile lista en react native. El desarrollo está relacionado con un ecommerce para pedidos de productos. Apis a desarrollar: -Usuarios -Locales comerciales -Carta o menú del local -Pedidos de comida -Combos de comida -Actividades -Checkout del pedido -Recorridos de locales -Recomendaciones -Interacción con goo...

    $650 (Avg Bid)
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    inmobiliaria 6 дні(-в) left

    necesito una integracion entre usuarios y inmobiliarias donde inicien secion y se vean sus perfiles

    $240 / hr (Avg Bid)
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    Hiring laravel Developer to finish Front / Back Web Site 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hello We are [увійдіть, щоб побачити URL], a company that buys and sells electronics, gaming consoles and smart phones. We had a freelancer hired to build a new web site. He migrated us away from wordpress and made a custom PHP Laravel php APP. He made a front end and back end cms for our web site. He actually quit and never finished our web site. We still have some things to finish from our pre...

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    crypto wallet app 6 дні(-в) left

    i want wallet app like bitcoin and only expert should message me with demo and previous work

    $612 (Avg Bid)
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    Wir sind ein junges Online-Marketing Start-Up Unternehmen. Bisher beraten und vermitteln wir mehr als 25 Influencer. Ein Webstore, welcher Cashback-Token als Währung verwendet. User registrieren sich mit ihrer E-Mail, geben gewisse Pflichtinformationen an (Name, Adresse, Geburtsdatum) und mögliche freiwillige Informationen. Die Daten werden über verschiedene API Schnittstellen abge...

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    Stripe and payU payment integration 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    1. STRIPE: A. save address while checkout on stripe: [увійдіть, щоб побачити URL] OR use prebuilt checkout [увійдіть, щоб побачити URL] B. save card details on stripe: You can set payment_intent_data.setup_future_usage to have Checkout automatically attach the payment method to the Customer you pass in for future reuse. 2. PayU Currency conversion for INR, GBP, AUD, EURO 3. Singup (1page earlier) ...

    $94 (Avg Bid)
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    1 заявки
    Open Source Chat Widget for Wordpress+iOS 6 дні(-в) left
    ПІДТВЕРДЖЕНО

    An open source chat widget is needed to be installed on a wordpress website. The widget shall be connected to an iOS device for the operator to reply to the customers. Both Website, iOS app and Server code must be open source and deployable.

    $173 (Avg Bid)
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    10 заявки

    Looking for someone who can develop a product affiliate system in video course selling website where students have an option to become our affiliate and promote our courses with their affiliate link or affiliate ID. Key components required - Product Affiliate System, E-commerce and System to show video course On the dashboard, our affiliates should be able to see their earnings, their leads, cou...

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    Rust Back-end websocket 5 дні(-в) left

    implement the login handler and wesocket handler in Rust, no database, no UI. deploy in the cloud.

    $270 (Avg Bid)
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    5 заявки
    Filemaker API (CRM database) to Kulea.ma API integration 5 дні(-в) left
    ПІДТВЕРДЖЕНО

    I’m looking for someone who can develop an API to API integration between Filemaker (CRM database) and [увійдіть, щоб побачити URL] (a marketing automation platform). Heres a link to the Kulea API info: [увійдіть, щоб побачити URL] If you look in the developer zone there is info about API’s You need to take appropriate account to ensure that there is not an infinite loop in the ch...

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    Audio chat project 5 дні(-в) left

    I am willing to make an audio chat app for where like minded people can interact privately.

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    dating app 5 дні(-в) left

    i need an expert to bid my dating website for me

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    Placement website 5 дні(-в) left

    This is a placement website for engineering students. Here each student should register and submit application for the placements. The admin will collect all the applications and filter out the students according to the requirement and submit to the recruiter. After the placement is done, admin will update the details of the placement.

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    ¡Hola! Buscamos una persona capaz de diseñar/ desarrollar una página web. Dicha persona deberá hacer una plataforma con ejercicios de futbol, destinada para entrenadores de futbol. Los ejemplos más claros, para que os baséis en lo que queremos, son: · [увійдіть, щоб побачити URL] · [увійдіть, щоб побачити URL] P.D El precio se pactará...

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    Laravel Developer - Long term working relationship -- 2 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, We are looking for a competent freelancer with Mid Level to Senior expertise in Lavarel Develoer To help us finish our projects. Looking for a long-term working relationship. Regards

    $17 / hr (Avg Bid)
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    Parse Server Installation 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    Hi, Am required in Digital ocean to install the Parse server with database postgresql and files to store on Digital ocean Spaces. it to be suitable for using load balancer. and this is using in android application. you need to check it is working or not in my application code.

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    Full stack developer 4 дні(-в) left

    Description - 1. Make a simple mongodb and nodejs based backend for a game. 2. Create an admin panel to update data in the database

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    User Profiles => Paid Free Free with paid features. Capacity to search for nearby matches. In-app chat with the match. In-app search feature. Select your basic preferences Check other's preferences to find potential matches. Explore all the potential matches and find the best one for you. Integrate a Live Video Chatting Feature. Real-time alerts and In-App Notifications. Find Events &...

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    I need someone with API experience To make Smart Lock Management Application with API To make an android and iphone app also to be used by the users See attached documents

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    TL;DR: I need a reliable and trustworthy developer to help me with wkhtmltopdf generator installation process. Dear freelancers, it's been a while since I have been using this platform. I hope I will find another reliable developer for a long term project. At the moment I am trying to bring back to life an old website which is using wkhtmltopdf generator version 0.12.1. During the website tr...

    $26 / hr (Avg Bid)
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    I have android and ios app , And i have requiremnet of removing backgroud image and need image cutout with transparent background. App Api's already built in php. Any backend language s preferrable for this job .Only need single api to remove background of image and send back me cutout with transparent background. Please start proposal with develop key. Thanks

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    I’m looking for a full-stack developer who can help me with finish a project. You can find in the project description in the attachment.

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    Hi, We are looking for a competent freelancer with Mid Level to Senior expertise in Lavarel Develoer To help us finish our projects. Looking for a long-term working relationship. Regards

    $12 / hr (Avg Bid)
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    Hi, We are looking for a competent freelancer with Mid Level to Senior expertise in Lavarel /PHP /MySQL. To help us finish our projects. Looking for a long-term working relationship. Regards

    $444 (Avg Bid)
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    Website Modification 2 дні(-в) left

    I have a client that needs some changes to their website. Some is cosmetic on the landing and the rest is WordPress back-end stuff connecting the site to third-party vendors and adding code. Not very difficult, just that my regular staff is booked solid and we need an extra pair of hands.

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    Website for Betting 2 дні(-в) left

    I want a website for betting which will include some games including some live games like cricket. The website should include login and money transaction features. It should be hackproof and should not lag. The person applying for the work should know how to buy the hosting from outside India. Some of the websites for references are here: [увійдіть, щоб побачити URL] , [увійдіть, щоб побачити URL...

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    Build me a Shopify App 1 день left

    Hello, I'm looking for someone who can assist in the app i am currently using. I have a large set of artworks, used to make custom pictures of people. Looking for a website where the customer can make their own avatar from my artwork selection. Not just one figure but multiple people on each page as family portraits are the biggest seller. Currently using an app called teeinblue, which ...

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    Растущая компания — разработчик программных решений в enterprise сегменте. Мы работаем с предприятиями, чтобы решить сложные задачи по оптимизации процессов. В связи с ростом проектов, ищем хорошего программиста на backend. Обязанности: Проектирование и реализация REST API, web socket channels для SPA-приложений (Node.js). Участие в разработке архитектуры баз данных (Mongo DB), построение з...

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    Benötige Website als online Vermietportal 1 день left
    ПІДТВЕРДЖЕНО

    Wir sind ein junges Unternehmen und im Bereich Immobilien / Dienstleistungen tätig. Ein neues Projekt soll die Entwicklung und das Betreiben einer Internetplattform sein, auf der Eigentümer ihre Wohnungsangebote (Wohnungen/Stellplätze/Garagen/etc.) potentiellen Interessenten präsentieren können. Vermieter / Eigentümer  - anlegen eines Anbieterprofils, späte...

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    Website/app 1 день left
    ПІДТВЕРДЖЕНО

    The web page and app should be made as portal for those who want to rent out unused space, and for those who are looking for storage in their neigbourhood. [увійдіть, щоб побачити URL] is a self-storage marketplace disruptor that’s creating a sustainable alternative to traditional self-storage. Peer-to-peer storage rental by helping local residents to rent out extra space in and around thei...

    $4899 (Avg Bid)
    Угода про нерозголошення
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    Whatsapp Multiagente 20 годин(-и) left
    ПІДТВЕРДЖЕНО

    Deseo crear una plataforma para servicio al cliente, que se conecte con whatsapp (un solo numero de cara al cliente), pero de cara a la respuesta, tener varias personas que lo puedan atender desde una plataforma, multigestion.

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    Learning Site - DRF 12 годин(-и) left
    ПІДТВЕРДЖЕНО

    Improvements to the Django DRF + React project. Uploaded to AWS Cloud. Currently in beta testing. 1st project completed & Bug fix in progress. After functional improvement, the mobile version project will be awarded.

    $19 / hr (Avg Bid)
    Угода про нерозголошення
    $19 / hr Сер. заявка
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    Bulid Sport Booking Flutter App 6 годин(-и) left

    hi every one, we would like to Create Flutter app its Sport/Entertainment Booking Flutter App with control panal (ios/android) (arabic/english) (with correct and clean coding) kindly preview the Ui below to found all features best regards [увійдіть, щоб побачити URL]

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    TOUCH IT 6 годин(-и) left

    Mi proyecto se basa en una idea de ofrecer seguridad a empresas, edificios(PH), y comercios de forma digital en el cual contará con una app que registrará a cada usuario ya sea con ID o documentos que garanticen sus datos de forma clara y precisa antes de ingresar a las áreas solicitadas

    $19 / hr (Avg Bid)
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    15 заявки

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