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.

Assumi Backend Developers

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    38 lavori trovati, prezzi in EUR

    customizing website theme to our business needs.

    €446 (Avg Bid)
    €446 Offerta media
    96 offerte

    Hello ,, Kindly we have live application in google play, and we need to handle and manage the subscriptions for users. This our case : - one user has one device and has multiple accounts in google play but he subscribe in our application from one of these accounts,then he change the google play account to another then enter our application( the result ) he can’t use the features. And if he...

    €18 (Avg Bid)
    €18 Offerta media
    2 offerte
    Document Express 6 giorni left
    VERIFICATO

    Es un gestor documental basado en microservicios capaz de Almacenar documentos disponibilizando una API al cliente como resultado final.

    €17 / hr (Avg Bid)
    €17 / hr Offerta media
    54 offerte

    Migración de los frameworks de una aplicación web (frontend + backend) construida sobre PHP 7.2, Laravel 5.5 y Crudbooster, se requiere que pueda funcionar con PHP 8.0. Para ello, se deberán hacer los upgrades de framework que sean necesarios y también sustituir el framework de Crudbooster por la alternativa más sencilla posible que permita subir a PHP 8.0, ya qu...

    €3818 (Avg Bid)
    €3818 Offerta media
    20 offerte
    Laravel Website - Multi Dashboard 5 giorni left
    VERIFICATO

    ...READ CAREFULLY THEN BID. MAX BUDGET $30... I require some modifications and feature addition on my current website but before that I wanna ask that have you previously worked on multi dashboard site with a payment gateway in laravel? It will going to be a long-term project on which I will be requiring some additional features every 1-2 months so will you be available for that? More precisely, ...

    €34 (Avg Bid)
    €34 Offerta media
    2 offerte

    Currently looking professional Python Developer for a full-time job. ( in company ) ( only individual independent developer) Long term cooperation 1)Are you available 40 hours a week (full time)? 2)Are you agree for an interview and to do a test task? 3)CV+

    €27 / hr (Avg Bid)
    €27 / hr Offerta media
    31 offerte

    ¡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: · [accedi per visualizzare l'URL] · [accedi per visualizzare l'URL] P.D El precio s...

    €1105 (Avg Bid)
    €1105 Offerta media
    20 offerte

    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

    €28 / hr (Avg Bid)
    €28 / hr Offerta media
    11 offerte
    DevOps Enginner 5 giorni left
    VERIFICATO

    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.

    €17 / hr (Avg Bid)
    €17 / hr Offerta media
    7 offerte

    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...

    €1069 (Avg Bid)
    €1069 Offerta media
    11 offerte

    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 ...

    €42 / hr (Avg Bid)
    In primo piano
    €42 / hr Offerta media
    17 offerte
    All in Night -- 3 5 giorni 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...

    €525 (Avg Bid)
    €525 Offerta media
    11 offerte
    inmobiliaria 5 giorni left

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

    €201 / hr (Avg Bid)
    €201 / hr Offerta media
    5 offerte

    Hello We are [accedi per visualizzare l'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...

    €1953 (Avg Bid)
    €1953 Offerta media
    129 offerte
    crypto wallet app 5 giorni left

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

    €513 (Avg Bid)
    €513 Offerta media
    4 offerte

    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...

    €4339 (Avg Bid)
    €4339 Offerta media
    32 offerte
    Stripe and payU payment integration 4 giorni left
    VERIFICATO

    1. STRIPE: A. save address while checkout on stripe: [accedi per visualizzare l'URL] OR use prebuilt checkout [accedi per visualizzare l'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 ...

    €79 (Avg Bid)
    €79 Offerta media
    1 offerte

    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.

    €145 (Avg Bid)
    €145 Offerta media
    10 offerte

    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...

    €73 (Avg Bid)
    €73 Offerta media
    2 offerte

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

    €226 (Avg Bid)
    €226 Offerta media
    5 offerte

    I’m looking for someone who can develop an API to API integration between Filemaker (CRM database) and [accedi per visualizzare l'URL] (a marketing automation platform). Heres a link to the Kulea API info: [accedi per visualizzare l'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 infinit...

    €1050 (Avg Bid)
    €1050 Offerta media
    5 offerte
    Audio chat project 3 giorni left

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

    €96 (Avg Bid)
    €96 Offerta media
    6 offerte
    dating app 3 giorni left

    i need an expert to bid my dating website for me

    €857 (Avg Bid)
    €857 Offerta media
    17 offerte
    Placement website 3 giorni 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.

    €156 (Avg Bid)
    €156 Offerta media
    13 offerte

    ¡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: · [accedi per visualizzare l'URL] · [accedi per visualizzare l'URL] P.D El precio s...

    €663 (Avg Bid)
    €663 Offerta media
    15 offerte

    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

    €14 / hr (Avg Bid)
    €14 / hr Offerta media
    144 offerte
    Parse Server Installation 3 giorni left
    VERIFICATO

    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.

    €145 (Avg Bid)
    €145 Offerta media
    5 offerte

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

    €93 (Avg Bid)
    €93 Offerta media
    11 offerte

    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

    €513 (Avg Bid)
    €513 Offerta media
    24 offerte

    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...

    €22 / hr (Avg Bid)
    €22 / hr Offerta media
    10 offerte

    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

    €17 (Avg Bid)
    €17 Offerta media
    6 offerte

    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.

    €569 (Avg Bid)
    €569 Offerta media
    44 offerte

    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

    €10 / hr (Avg Bid)
    €10 / hr Offerta media
    73 offerte

    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

    €372 (Avg Bid)
    €372 Offerta media
    76 offerte
    Website for Betting 1 giorno 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: [accedi per visualizzare l'URL] , [accedi per visuali...

    €423 (Avg Bid)
    €423 Offerta media
    8 offerte

    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 ...

    €135 (Avg Bid)
    €135 Offerta media
    5 offerte

    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...

    €1680 (Avg Bid)
    €1680 Offerta media
    23 offerte
    Benötige Website als online Vermietportal Sta terminando left
    VERIFICATO

    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...

    €15 / hr (Avg Bid)
    €15 / hr Offerta media
    57 offerte

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