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.

141222 değerlendirmeden, müşterilerimiz Backend Developers freelancerlarımızı 5 yıldız üzerinden 4.85 ile derecelendiriyor.
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    Flutter veya baska bir hybrid dil ile yazilacak mobil uygulamaya ihtiyacimiz var css bilgisinin iyi olmasi gerekli uygulamaya bazi css kodlari uygulayacagiz . duruma gore backend icinde beraber calisabiliriz .

    €434 (Avg Bid)
    €434 Ortalama Teklif
    18 teklifler

    ERP for interior design manufacturimg company Need to map Manual procees to online software process

    €399 (Avg Bid)
    €399 Ortalama Teklif
    5 teklifler

    Below i mentioned current live website URL and also i mentioned what changes i need to change Website URL : Changes to change attribute type while ordering product like actully what in current version customer should be select all attribute after that only they can able to place order - but i actully what i need if customer select single attribute also there display variation amount and customer able to place order (if you have doubts ping me i ll clear with sample) the final checkout page there's option for timeslot now there's no extra price amount added for that time but i need to change if customer choose some time extra amount need to be add need to fix small bugs Actully i have lots of projects so excepted reasonble rate (Tamil peoples most welcome)

    €48 (Avg Bid)
    €48 Ortalama Teklif
    6 teklifler

    I need a new listener php file for incoming API messaging because mine is not working well. More details on chat.

    €32 (Avg Bid)
    €32 Ortalama Teklif
    22 teklifler
    Nomad freelance 6 gün left

    We are building tech and network for facilitating a job trade without the need for third parties - by imposing trust in recruitment, removing organizational overhead, and enabling free internal trade - in a decentralized manner.

    €27 / hr (Avg Bid)
    €27 / hr Ortalama Teklif
    46 teklifler
    gupshup api expert 5 gün left
    ONAYLI

    Hello i need and expert with gupshup api php

    €41 (Avg Bid)
    €41 Ortalama Teklif
    22 teklifler

    We are based in Europe and run a new startet Woocommerce store. We have ambitions to take the site on next level. But we need a good and long term permanent Woocommerce expert/developer with experience especially in E-commerce store. Need to be honest and most important independent, and are able to see out of the box by self! The site is up and live, we have around 250 products on the website right now. So it is not complicated for the developer, because there is only small task in pipeline to improve. 50 usd fix monthly fee MAIN TASK: - Experience with speed optimization (High skills) -    Website Security (High skills need) -     API integration - Design skills - UX skills to do the site more user friendly - Experience with plugins - Expe...

    €174 (Avg Bid)
    €174 Ortalama Teklif
    70 teklifler

    Hello, We are looking for a senior-level full-stack web engineer with experience in .NET Core and Java who can join us and help with building a large platform. English needs to be at an advanced level and any experience in leading a small team of developers would be a big plus. I look forward to seeing your proposal. Thank you

    €23 / hr (Avg Bid)
    €23 / hr Ortalama Teklif
    75 teklifler

    Looking for someone to create the code/backend to a profit/loss tracker for Solana. The platform would allow user to log in with their Phantom wallet and see their profit/loss on all trades made on that account. I have the UI kits ready but need all the coding, please have experience

    €1350 (Avg Bid)
    €1350 Ortalama Teklif
    66 teklifler

    I'm looking for senior PHP developer (upto 10 freelancers) having sound knowledge of backend development (PHP, Laravel, CodeIgniter, API implementation, Payment gateway integration, etc). Please bid if you are available for long term Full Time position. Please start your proposal with the word "success" and share your past projects Looking forward to working with you

    €532 (Avg Bid)
    €532 Ortalama Teklif
    52 teklifler

    I have an Android and iOS app that tracks an user steps with Google Fit / Apple Health API, and it rewards the user with a coin based on the number of steps the user has gotten. It also uses a backend simple program to get and publish certain data to the app. I need to add functionality to both apps (the Android and the iOS version). I need to add an option to pick a sport (from a list that the app should show), and let the user start and stop a timer. When the user stops the timer, and based on the sport the user had chosen, it will give him a number of coins. Please, have in mind that this is a very simple project, and I'll have an appropriate maximum budget.

    €219 (Avg Bid)
    €219 Ortalama Teklif
    44 teklifler
    Photographer website 5 gün left
    ONAYLI

    I'm a professional photographer: I need to develop my new website portfolio. I will provide the designs. The design of the website is minimal and bold, but I will have to publish lot of galleries with images, so I need something extremely functional and fast (maybe with a back office?) No time wasters.

    €192 (Avg Bid)
    €192 Ortalama Teklif
    154 teklifler

    we required a nodeJS backend developer for dynamic pages and Dash board for

    €33 (Avg Bid)
    €33 Ortalama Teklif
    7 teklifler

    The aim of this task is to get via postman every time I click send, the cookie and authorisation and paste it in heather's tab in key and value. Now I manually get the cookie and authorisation in the network tab under inspection in the browser. Why? because it changes every time i login into the URL. Note: Job will be done remotely connected to my laptop.

    €12 (Avg Bid)
    €12 Ortalama Teklif
    12 teklifler

    We are looking to hire a part-time Python Django developer having 4+ years exp in the long run. Our website Share your portfolio. We will like to interview over the google meet.

    €353 (Avg Bid)
    €353 Ortalama Teklif
    17 teklifler
    .net core 4 gün left
    ONAYLI

    Some one to help me in add and retrieve the attachments , and some other points in .net core . (Arabic language )

    €29 / hr (Avg Bid)
    €29 / hr Ortalama Teklif
    74 teklifler

    I want to integrate into my system a webscraper interface, whereby my customers determine what to scrape (usually their own website). They don't need to be running scrapes or seeing the data, but they should set up 'what to scrape', and then we take it from there. If you have suggestions or white label software i'm also open to that. Hope that makes sense! Thanks.

    €48 / hr (Avg Bid)
    €48 / hr Ortalama Teklif
    55 teklifler

    I need more than 5 years experience blockchain developer that can do backend and integrated smart contact to the site. I need the site to be similar to . I already have react project website design done as what you need to do is to create backend and integrated smart contract. My site is , so you need to continue develop from this point.

    €1612 (Avg Bid)
    €1612 Ortalama Teklif
    89 teklifler
    Web developer 3 gün left

    Project-based web developer needed

    €2 / hr (Avg Bid)
    €2 / hr Ortalama Teklif
    12 teklifler

    I need a website with payment options.

    €302 (Avg Bid)
    €302 Ortalama Teklif
    20 teklifler

    Google maps Services. GPS Tracking, live locations. QR Code Scanner. Security. Payment. Customers Service Chat. Notifications. Ex: "Marti" App

    €1286 (Avg Bid)
    €1286 Ortalama Teklif
    63 teklifler

    4 numbering lucky draw system, lucky number feeds through the mobile app, we have different lucky draw numbering system, A,B,C,D - Default Format, all feeds need time stamps and manual time configuration. Example (Morning 06:00 AM to Evening 2.30 PM). Output of total the total user input feed export as a excel sheet from the admin panel login. once backup-ed the data we can clear the database.

    €273 (Avg Bid)
    €273 Ortalama Teklif
    10 teklifler

    Dear freelancer, i need a Venue booking app, for such as meeting rooms, sport Venues, swimming pools and anything related. requirements: - design and development full solution. -user IOS and android. (flutter/ react) frontend - provider app - owner backend panel + app. features are: search by venue/ activity. selecting time and date, kindly if you did such project before include a demo or screenshots of the app you made.

    €2724 (Avg Bid)
    €2724 Ortalama Teklif
    159 teklifler

    The code would be developed in Javascript/typescript to read stock data from the market and then put buy or sell orders based on strategies.

    €7 / hr (Avg Bid)
    €7 / hr Ortalama Teklif
    16 teklifler
    Gaming Website Backend 1 gün left
    ONAYLI

    ill send description in depth but the overall gist of the project is to do a backend that allow users to search for matches and report the outcomes of the match.

    €1135 (Avg Bid)
    €1135 Ortalama Teklif
    85 teklifler

    We have a project already developed with a web admin panel for an App (Winzy) and APIs coded which when hit via a http call return response in JSON format. We need someone to fix a current OTP issue and correct it with current DLT platform requirements. So your job would be to access the existing code base and make the necessary changes to enable the web admin panel as well the APIs. Also you would have to work on adding new APIs if required. Experience in developing Push notification is added advantage. Any additional queries would be resolved via chat or a call.

    €125 (Avg Bid)
    €125 Ortalama Teklif
    24 teklifler

    Greetings, i am looking for someone who has verified their google app (/project) in console.cloud.google.com. The app/project must have following scopes: if you know what you are reading then it think that's enough to explain what i am looking for.. 1. Priority will be given whom project has more scope verified 2. Priority will be given to whom don't need the google account any longer and can transfer ownership to me. thanks in advance && happy bidding best regards

    €10 - €103
    Mühürlü
    €10 - €103
    3 teklifler
    eComLovers.com 1 gün left

    Olá! Tudo bem? Somos uma Startup de Recrutamento e Seleção com banco de talentos. Hoje eu tenho um site: Este site foi um MVP que deu certo para o meu negócio. Ele foi feito em Wordpress + Google Workspace (Planilhas + Forms). Agora, eu preciso que este projeto evolua! Estou a procura de alguém que consiga transformar este site em um appweb com cadastro de usuário, para que cada cliente (usuário) consiga subir o seu perfil e habilidades (que hoje ele sobe via google forms), consiga também atualizar o seu perfil quando quiser (como no linkedin). Em tópicos o projeto se resume a isto: - Front (app web) para cadastro do perfil. Tipo linkedin profile mas com o estilo/UI do meu site atual, com corações e apenas p...

    €196 (Avg Bid)
    €196 Ortalama Teklif
    14 teklifler

    We need a mobile application that will be written in Flutter or another hybrid language. We will apply some css codes to the application that needs good css knowledge. We can work together in the backend depending on the situation.

    €564 (Avg Bid)
    €564 Ortalama Teklif
    75 teklifler

    A game that we wish to launch through a personal website Website needs: + Everything built from scratch (no Wordpress etc.) and optimized for speed + Signup (confirmation code on email) and Login system for clients, allowing for PayPal transactions + Multi-layer avatar creation + Responsiveness, screen rotation + The application should be created as microservices to be easily scaled Details: + Full website specifications are ready to be provided after signing an NDA + We provide the design as icons, photos and mockups + No requirement on the backend and frontend programming language. Deadline: 15th November Proposal: + Please submit proposal only if you know that you can start as soon as possible, as the deadline is hard + When submitting a proposal, show us a portofolio with your wor...

    €1346 (Avg Bid)
    €1346 Ortalama Teklif
    68 teklifler

    you need to write from scratch the software for the game with live dealers.

    €12042 (Avg Bid)
    €12042 Ortalama Teklif
    35 teklifler

    We want to build a Shopify App that integrates a Shopify Store with our service. Full briefing attached.

    €2358 (Avg Bid)
    €2358 Ortalama Teklif
    74 teklifler

    Hi, I have a PHP script installed on my server that has a Proxy feature included, this feature is not working and the proxies are not added or not working, I need someone with good experience to fix that issue and let the proxies work fine on my PHP script, preferable backend developer with a server technical background. I will give more details about my server and PhP script for the right one. Thanks

    €15 / hr (Avg Bid)
    €15 / hr Ortalama Teklif
    47 teklifler

    Hello, I need to make 2 scripts to automate tasks with the praw library in my SubReddits. In brief: Script1: Copy title + link from a list of subreddits (Source) and publish them in another list (Destination). Script2: Take each of the posts published in the list (Destination) And crosspost to a new list of SubReddits. If you have worked with the Reddit API you will understand quickly when I send you the exact details. Please if you don't have experience with Reddit API don't bid. I've wasted a lot of time with people who don't know how to handle it. My maximum budget is 100$. Note: If you are interested read the description and send me your budget, I can adapt to your price. If you have experience with praw library please write me and I will give you ful...

    €89 (Avg Bid)
    €89 Ortalama Teklif
    23 teklifler

    Önde Gelen Backend Development Topluluk Makaleleri