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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    25 travaux trouvés au tarif de EUR
    Private offer 6 jours left
    VERIFIÉ

    This is the personal job to my engineer 25$ / h for 2 week total 2000$ Please do not apply.

    €20 / hr (Avg Bid)
    €20 / hr Offre moyenne
    16 offres
    WSDL expert 5 jours left
    VERIFIÉ

    I am looking for a wsdl expert to create one web service. If you did do well, it will be an opportunity for the long term relationship.

    €16 / hr (Avg Bid)
    €16 / hr Offre moyenne
    37 offres
    iOS developer 5 jours left
    VERIFIÉ

    I have a graphic design background. I wish to set up a platform on iOS and later on move into android. All elements are designed by me. I'm looking for a developer to code the assets I provide. Looking for a developer in Vancouver, BC, Canada.

    €13 / hr (Avg Bid)
    Local
    €13 / hr Offre moyenne
    62 offres

    Seeking mobile developer who has deep knowledge about general AI and can integrate it into a mobile classifieds app (for more than just buying and selling). The app is a search engine for anything and everything - from products to services to events to mobile apps/software. The project will require a full-stack developer, however the main expertise will need to be experienced back-end/AI progr...

    €6892 (Avg Bid)
    €6892 Offre moyenne
    56 offres

    Hello I have one back end code for mobile app and website. But several functions does not work now such as phone verify and push notification etc. It's ongoing project, i need to update several functions more. Do not bid India_Pak, Recommend European Developers and Full time developers. Thanks.

    €166 (Avg Bid)
    €166 Offre moyenne
    4 offres

    We are seeking for a company that can already have a POS system working that can easily connect to kitchen and the waitress tablet along with printing abilities and tested hardware with the proper supplier. Your system should be mature and flawless without bugs. We can work in 2 way, one we can buy your codes out right and you support us or 2 we can build a subscription base on a monthly. Only ...

    €2970 (Avg Bid)
    €2970 Offre moyenne
    47 offres
    HR application 5 jours left

    I need an iPhone app. I would like it designed and built. + all needed backend programming/ admin/ dashboards, HR application. features: * Candidate - sign up / login - Uplod documents - follow up order process - payment - inApp chat controlled system . * Employer: - Signup / Login - Browse , sort and view database . - request a file FULL view + payment + all other main features. ...

    €534 (Avg Bid)
    €534 Offre moyenne
    38 offres

    Hello I have one back end code for mobile app and website. This code was built in Python. But several functions does not work now such as phone verify and push notification etc. It's ongoing project, After complete the phone verify function, i need to update several functions [se connecter pour voir l'URL] budget is only $50, if you can't do this project with $50, Do not bid. Do no...

    €98 (Avg Bid)
    €98 Offre moyenne
    2 offres

    Hello I have one project was built in Python 3.* for mobile apps(iPad,iPhone, Android), but several functions does not work now. for example, phone verify, push notification etc. It's ongoing [se connecter pour voir l'URL] update the phone verify function of back end, I need to update several [se connecter pour voir l'URL] not bid IndiaPak developers. Recommend European developers....

    €113 (Avg Bid)
    €113 Offre moyenne
    3 offres

    We are developing a Web and Mobile (IOS & Android) application

    €18 / hr (Avg Bid)
    €18 / hr Offre moyenne
    147 offres

    We are seeking for someone that has the code to validate emails. Similar to these website: Zerobounce QuickEmailVerification MyEmailVerifier Xverify LLC EmailMarker Nojunk EmailListVerify MailboxValidator TheChecker EmailVerifier it must verify the following Domain and SMTP validation Syntax verification Catch-all domains checking MTA validation MX records validation Hard bounce checking

    €98 (Avg Bid)
    €98 Offre moyenne
    8 offres

    We are looking for development guide expert for us. It is long term position if you are expert. Thank you

    €5 / hr (Avg Bid)
    €5 / hr Offre moyenne
    12 offres

    Parallel Work Stream in Cloud Computer Service (cluster for cloud platform) (50$) Hello! Thank you for having interest in this topic. I've used some Cloud Server Computer service in Google Cloud, and Amazon's Amazon Workspace. and I happened to know that I can even run multiple cloud computers in these platforms and service. But I'm still not very familiar it and experienced w...

    €143 (Avg Bid)
    €143 Offre moyenne
    4 offres

    build Backend CMS with firebase db ... import/ export data real-time users dashboard notifications management etc.. admin roles data imoort export from xls an json search must be fully functional CMS with modern interface thanks

    €477 (Avg Bid)
    €477 Offre moyenne
    55 offres

    I need announcement website. Here is example: [se connecter pour voir l'URL] In this website users can post a announcement without registration. I want website like this. Website should be dynamic and will work without any error or problem. I looking for experienced and professional developer Don't give importance budget, place your bid.

    €597 (Avg Bid)
    €597 Offre moyenne
    87 offres

    We are starting an e-commerce startup and want to get developed a particular 'feature' in our [se connecter pour voir l'URL] project would need backend [se connecter pour voir l'URL] will tell more details later.

    €384 (Avg Bid)
    €384 Offre moyenne
    32 offres

    looking for backend developer experienced in python & erlang. you should have experienced in websocket. Also you should have front-end skill. i'll provide details via PM.

    €161 (Avg Bid)
    €161 Offre moyenne
    8 offres

    We are seeking for an expert that understands why emails get banned and what we can do to get our domain out of the black list.

    €93 (Avg Bid)
    €93 Offre moyenne
    11 offres

    CONTEXT We are launching a startup about a marketplace that will link influencers and businesses willing to promote themselves on social media. We already have a tailor-made website that you can visit on [se connecter pour voir l'URL] We already have a first version (see mock-up [se connecter pour voir l'URL]) of the app (coded in Swift, NodeJS and MondoDB) that was tested live with use...

    €26 / hr (Avg Bid)
    €26 / hr Offre moyenne
    61 offres

    looking for backend developer experienced in python & erlang. you should have experienced in websocket. i'll provide details via PM.

    €161 (Avg Bid)
    €161 Offre moyenne
    9 offres
    Mobile MMO game development 23 heures left
    VERIFIÉ

    I need an Android developer for a GPS-based mobile game. It would be nice to have assistance for the backend part and the alpha/beta release as well. I need an estimation of the required time and total cost for development and subsequent assistance.

    €28 / hr (Avg Bid)
    €28 / hr Offre moyenne
    32 offres

    Wir setzen aktuell für einen Kunden eine Website mit Contao um. Das Weblayout ist zum großen Teil freigegeben und es kann mit der Umsetzung in Contao Backend und Frontend begonnen werden. Wir arbeiten mit einem Programmierer zusammen und möchten gerne zwei Personen mit der Umsetzung beauftragen, um das Projekt in einem vorgegebenen Zeitrahmen umzusetzen.

    €27 / hr (Avg Bid)
    €27 / hr Offre moyenne
    24 offres

    My uploading code was working ok, but suddenly it stopped working. Keys are ok so I just need somebody to take a look at it to ensure it is ok and why the issue is there to solve it.

    €39 (Avg Bid)
    €39 Offre moyenne
    6 offres
    SwaggerHub api definition 5 heures left
    VERIFIÉ

    Create an API definition using SwagerHub with between 15 and 20 endpoints. Each endpoint will need to have well defined: - Request Body: With all properties specified with type, length, etc - Response Body: With all properties specified with type, length, etc. All type of responses must be considered, (200/400/401/etc) Some of the endpoints are: - For login/signup - For private functional...

    €37 (Avg Bid)
    €37 Offre moyenne
    3 offres

    Look for 1 or 2 React Native Developers based in the UK. If you're not based in the UK - please don't apply. We already have an app launched but need on-going support for a long-term project. Ruby backend and React front end experience required.

    €45 / hr (Avg Bid)
    Local
    €45 / hr Offre moyenne
    10 offres

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