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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    Nous voulons développer un back office pour une application mobile de type portefeuille électronique. Dans le souci d’avoir une solution facilement maintenable par nos équipes internes, nous souhaitons que la solution soit FULL REST. Donc votre mission consistera dans un premier temps à développer les différentes apis nécessaires dans le cadre de la mise en place de ce back office. Nous nous attendons donc à avoir pour chaque donnée manipulée, un CRUD correspondant.

    €413 (Avg Bid)
    €413 Μέση Προσφορά
    20 προσφορές
    fair lottery 2 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    it is a startup idea I want to implement. users will attend a lottery and the winner(s) take all the jackpot, and the website gets a percentage (5%). the website should have the following: +secure authentication (login, forget the password, google login, email verification) +few static pages (about, home, legal, contact us) +lottery page ( users can see how many people attended, total jackpot price, time of the lottery, and results of previous lotteries) it should have one click "attend" and when they click the amount (let's say $1) deducted from their wallet if they win the total amount goes to their wallet. +account page (their info) +wallet (the fees to attend the lottery will be deducted and paid to the site wallet) +crypto payment and withdrawal to their crypto wallets...

    €630 (Avg Bid)
    Επείγον
    €630 Μέση Προσφορά
    42 προσφορές

    First project: Swapping dapp Summary: Firstly, we need token development created. User who comes to the website, uses Coinbase, Metamask, Trust wallet(all the popular wallets) to buy credits with USDT, BNB, ETH or $. Later, when the presale starts customers will have a claim function to convert credits to tokens. They will get airdropped tokens for their credits. They have the option to claim 33.3% of their credits per month. When they want to purchase tokens they will get a QR code or address, we need to have phases for purchasing. For example in the first phase when someone purchases, they will get 20% bonus tokens, in the second phase 10% bonus etc... We want to use the gateway for transactions and to have a dynamic address for each transaction, one address one transaction. Th...

    €1239 (Avg Bid)
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    Backend SW Engineer 5 μέρες left

    Experienced Java and Scala engineer • Actively lead and participate in the products features development • Enforce and encourage coding standards and development best practices in the team • Analyze features requirements, create design documents and review them with relevant stake holders in the group • Encourage continuous improvement in the development process and ensure efficient delivery of products • Participate in reviewing design and code of other team members • Deliver high quality, sustainable and maintainable code. Mandatory skills: Scala, Java (Expertise) SQL Database (Good) At least one of the common relational Databases: Oracle, MSSQL, PostgreSQL, etc, (Good) CI/CD practices and common tools like Git, Maven, Jenkins (Good) Desired...

    €47 - €47 / hr
    Σφραγισμένο ΣΜΓ
    €47 - €47 / hr
    10 προσφορές
    Admin Panel (WEB UI) of Construction Site Job Tracking App -- 2 4 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We have been working on a project. Thus we are looking for a .net developer. Project contains; - Mobile application - API - Web Management Panel Mobile app and API is done. We started web panel and right now it is missing some features. Previous developer implemented a template to the project () In API there is jwt with role based authentication&authorization so you dont need to work on any authentication and authorization, it is already done. Some pages are done but missing few basic things. For finishing the project we are looking for a .Net Dev. Project is built with ASP.NET 6. Using PostgreSql API: App:

    €462 (Avg Bid)
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    Looking for a company to work with 3 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We want to send out concept designer to work with a company in that companies office to make changes to our app. We have an IOS app that we would like to do a makeover on, update an algorithm and the APis, update and automate a reward system/email/notifications of payment incoming and outgoing. Some adjustments to the PHP laveral backend is also required. When completed an Android/possible web version of the same is required. We are looking for a team for a long-term relationship to keep our product updated and to evolve with it. We require the team to deliver the work on time or face late work penalties, so the time frame for completion is urgently required and will be a deciding factor in who we decide to contract with.

    €1491 (Avg Bid)
    €1491 Μέση Προσφορά
    169 προσφορές

    Need a pro dev in Laravel PHP, Fullstack backend frontend, to fix / custumize 6 things in my script 1. Add section for custumores to upload videos. And giving me control over who can have this option and how long there videos can be. 2. Fixing size of money amount. Adding a " $ " and a " . " 3. Fixing a window that dosint close. 4. Center store names. 5. Adding a " ? " and once clicked on showing Info. And show me how to change that info for later. 6. Fix sections where images or words dont show or save. " Pay $70 if you cant do for $70 dont get in contact with me.. "

    €61 (Avg Bid)
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    Necesito desarrollar el backend de un ecommerce y su admin panel en las tecnologías expuestas Solo trabajaré con alguien que me pueda demostrar que ha usado estos frameworks, que muestre lo que hizo y a que clientes, para poder saber de primera fuente si es que cumplen o no cumplen con lo prometido Porque llevo un año intentando hacer este proyecto contratando a personas que no eran las indicadas, así que si no tienes lo expuesto mejor no me hables por favor. Saludos

    €1819 (Avg Bid)
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    Plataforma y App de suscripción a contenido exclusivo. 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Queremos desarrollar una plataforma de suscripción a contenido exclusivo para un nicho en específico, en donde los creadores de contenido se registren y puedan publicar material, el cual puedan ver solamente las personas que estén pagando su suscripción mensual. Los creadores reciben el pago de acuerdo a la cantidad de personas suscritas a su contenido y la plataforma, un porcentaje de ello. Es un modelo de negocio muy común hoy en día y ya existen plataformas muy grandes como OnlyFans y Patreon. Este proyecto es para un nicho en específico y no será de contenido explícito. Necesitamos alguien que pueda llevarlo a cabo y nos platique todos los requerimientos para estar en línea y completamente funcional.

    €2210 (Avg Bid)
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    40 προσφορές

    App should be developed using Spring Boot and Angular.

    €196 (Avg Bid)
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    27 προσφορές
    Address book website that works directly with OpenLDAP -- 6 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    1. Need to make a user with editing rights for a certain company, group, etc... in OpenLdap. 2. Need to add new custom attributes for contacts in OpenLdap. 3. Need to make an admin login menu for the website and a super admin from OpenLDAP who will be able to create editors from OpenLDAP for the ldap book, and assign certain groups, companies, etc... to which they will have access to change users data directly on the website. 4. This website should be optimized for mobile and other devices... Link to my Ldap book

    €1094 (Avg Bid)
    €1094 Μέση Προσφορά
    51 προσφορές
    MQTT & NodeJS Project 2 μέρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    We have a web admin panel that sends commands to our scooter IoT via the backend. We connected with a web socket MQTT built using NodeJS. I want to be able to change the IP address the commands is being sent to. Attached is a breakdown of how our system works

    €36 / hr (Avg Bid)
    €36 / hr Μέση Προσφορά
    70 προσφορές

    We are building a blockchain platform for decentralised applications (Dapps) and helping to create a blockchain ecosystem that allow for scaling and connecting disparate blockchains. We are looking for a member who has • Excellent Understanding of Blockchain Technology • Proficiency in at least one high-level programming language • Solid grasp of cryptography and security principles • Experience with distributed systems and peer-to-peer networking • Knowledge of smart contracts • Familiarity with Algorithm and Data Structures

    €36 / hr (Avg Bid)
    €36 / hr Μέση Προσφορά
    71 προσφορές

    I need a python script to be built that has the same functionality as this tool

    €508 (Avg Bid)
    €508 Μέση Προσφορά
    51 προσφορές
    Ghép chữ vào video 1 μέρα left

    Tôi đang cần xây dựng 1 chức năng backend với: - Đầu vào: video quay 1 vật thể và mảng thời gian kèm vị trí để chèn text vào video - Đầu ra: mong muốn thu được video đã chèn text vào 4 vị trí xung quanh vật thể theo thời gian

    €998 (Avg Bid)
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    build me a website 1 μέρα left

    Need to build a website.I need a full stack web is around 50-80 dollars.

    €73 (Avg Bid)
    €73 Μέση Προσφορά
    17 προσφορές

    Need to build a website.I Need a full stack web developer.

    €78 (Avg Bid)
    €78 Μέση Προσφορά
    18 προσφορές

    Need a pro dev in laravel/PHP, fullstack, front end, back end to fully customise a script. Pay $70. Need you to fix 6 things: 1. Adjust size of dollar amount, and put a " $ " and add a dot .. 2. Fix a window that dosint close. 3. Center store name. 4. Put a " ? " and make it clickable with info showing once clicked on. Put info ill give you & show me how to change that info later. 5. Fix banner size. 6. Make it able to upload videos with me to chose how long videos can be and who can have this option to upload videos..

    €51 (Avg Bid)
    €51 Μέση Προσφορά
    44 προσφορές
    Mobile app development 8 ώρες left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

    Hi, I’m looking for app development company to work on a project Please list your previous work

    €3907 (Avg Bid)
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    Hi I am using a readymade script on my website. I was customising the website as per my requirements. As soon as I clicked on enable reCAPTCHA v3, I got accidently logged out from the website and couldn't login again a getting error when trying to log in, when forgetting the password or even creating a new user. Screenshot attached! I think I have to disable the reCAPTCHA v3 through other method such as Cpanel or PHPmyadmin? Any idea how we can disable the reCAPTCHA v3 without log in to the website backend as it is not allowing to login.

    €22 (Avg Bid)
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    15 προσφορές
    Explicit Filtering Phase -- 2 Έχει λήξει left
    ΕΠΙΒΕΒΑΙΩΜΕΝΟ

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

    €446 (Avg Bid)
    €446 Μέση Προσφορά
    29 προσφορές
    Web stresser / booter source Έχει λήξει left

    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)

    €211 (Avg Bid)
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    11 προσφορές

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