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 trabalhos encontrados, preços em EUR

    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 [fazer login para ver a URL] budget is only $50, if you can't do this project with $50, Do not bid. Do not bid I...

    €49 (Avg Bid)
    €49 Média
    1 ofertas

    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 [fazer login para ver a URL] update the phone verify function of back end, I need to update several [fazer login para ver a URL] not bid IndiaPak developers. Recommend European developers. Thanks.

    €44 - €44
    €44 - €44
    0 ofertas

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

    €18 / hr (Avg Bid)
    €18 / hr Média
    133 ofertas

    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

    €100 (Avg Bid)
    €100 Média
    9 ofertas

    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 Média
    9 ofertas

    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...

    €142 (Avg Bid)
    €142 Média
    4 ofertas

    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

    €476 (Avg Bid)
    €476 Média
    55 ofertas

    I need announcement website. Here is example: [fazer login para ver a 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.

    €603 (Avg Bid)
    €603 Média
    85 ofertas

    We are starting an e-commerce startup and want to get developed a particular 'feature' in our [fazer login para ver a URL] project would need backend [fazer login para ver a URL] will tell more details later.

    €383 (Avg Bid)
    €383 Média
    32 ofertas

    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.

    €157 (Avg Bid)
    €157 Média
    7 ofertas

    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.

    €94 (Avg Bid)
    €94 Média
    12 ofertas

    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 [fazer login para ver a URL] We already have a first version (see mock-up [fazer login para ver a URL]) of the app (coded in Swift, NodeJS and MondoDB) that was tested live with users and receive...

    €27 / hr (Avg Bid)
    €27 / hr Média
    58 ofertas

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

    €160 (Avg Bid)
    €160 Média
    9 ofertas
    Mobile MMO game development 3 dias left
    VERIFICADO

    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 Média
    32 ofertas

    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 Média
    24 ofertas

    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 Média
    6 ofertas
    SwaggerHub api definition 2 dias left
    VERIFICADO

    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 Média
    3 ofertas

    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 Média
    9 ofertas

    We are building a Funnel web building platform like ClickFunnels and we need for its dynamic development the interface design of the main console, just like CF. What will this platform do? The platform aims to provide a console with innumerable functions to all web marketers for the development of real sales funnels, therefore pages of: optin, sales What should the freelancer web design expert d...

    €129 (Avg Bid)
    €129 Média
    10 ofertas

    Hi, we are looking for an experienced end to end developer who can develop a very simple iOS App + APIs. GoLang, HAProxy, NGINX will be used. This project will almost be like a "Hello World" demo.

    €52 (Avg Bid)
    €52 Média
    5 ofertas

    Hola requiero re-diseñar un sistema en linea, multiusuarios, para llevar el registro y control de procesos jurídicos relacionados con hechos de transito. adjunto un documento que explica a mi manera de ver el proceso la información requerida. aunque quiero saber si hay otras opciones . Informo que ya tengo un sistema donde guardo la información pero quiero mejorar. Los...

    €1152 (Avg Bid)
    Local
    €1152 Média
    8 ofertas

    Necesito desarrollar una API para acceso a datos, estilo Data Services (acepto recomendaciones para este tipo de proyectos) para que pueda ser consumida por el front-end y generar reportes dinamicos. Los datos se obtienen desde una base de datos oracle, modelo estrella, como datawarehouse, el volumen de datos es de +40millones de registros, por lo que deseo buenas técnicas de acceso a dat...

    €18 / hr (Avg Bid)
    €18 / hr Média
    12 ofertas

    We need to set up our new ready design (.xd format) into our PHP 5.x website Also some minor backend updates Keyword "Coffee" for ones who read this

    €28 / hr (Avg Bid)
    €28 / hr Média
    83 ofertas
    Multiple projects 14 horas left

    SEEKING THE FOLLOWING DEVELOPER/ENGINEER POSITIONS FOR IMMEDIATE HIRE FOR OUR STARTUP TEAM • Backend Programmer / Database • Full Stack • AWS / Server Expert • Heatmap (Java / Frontend) Steignet is an early stage real estate tech startup. We are developing proprietary technology to identify undervalued and distressed residential real estate assets throughout certain U.S. g...

    €19 / hr (Avg Bid)
    €19 / hr Média
    43 ofertas

    Our team is looking for experienced C ++ / Lua programmers, other knowledge is also welcome. Basically, you will be engaged in the development of server-side (Backend) for online games. We need programmers on a permanent basis, not on a one-time payment! At the moment, the whole team works without payment, we focus on payment after the release of the game! At the moment we have done 70% of the wo...

    €885 (Avg Bid)
    €885 Média
    8 ofertas

    Artigos da Comunidade dos Principais Backend Development