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.

Contratar a Backend Developers

Filtro

Mis búsquedas recientes
Filtrar por:
Presupuesto
a
a
a
Tipo
Habilidades
Idiomas
    Estado del trabajo
    39 trabajados encontrados, precios en USD
    realidad aumentada 5 días left
    VERIFICADO

    busco frelancers o equipos o consultoras que tengan experiencia en apps usando la realidad aumentada. Solo contantarse si tienen una app con realidad aumentada y dejar el link para revisarla Se requiere para hacer una app para un cliente que quiere dejar ciertas señales dentro de un salon y segun ella salgan, videos, textos, preguntas segun el taller de entrenamiento que se esta haciendo,...

    $607 (Avg Bid)
    $607 Oferta Promedio
    13 ofertas
    Dating App Completion 6 días left
    VERIFICADO

    Hello Freelancers, Please consider this project carefully before bidding. 2 - If you have no reviews or previous work on Freelancer please do NOT bid 3 - Project Involves taking on existing code and completing project before 1st April 2020 4 - All current code provided to successful bidder. 5 - Bid will not be awarded to solo developers 6 - Please do not request work outside of Freelancer Develo...

    $1241 (Avg Bid)
    $1241 Oferta Promedio
    71 ofertas

    I want an mobile app in android and ios. The app will consists user, trainer side and an admin panel. Companies and freelancer are welcome to showcase their skills. The best and on time delivery will be chosen for the Project. Only Jaipur based are required. Thanks

    $1641 (Avg Bid)
    $1641 Oferta Promedio
    40 ofertas

    Somos uma futura empresa voltada a ensino e buscamos um profissional para fazer o back-end, implementar um Dashboard e implementar alguns recursos no front-end.

    $487 (Avg Bid)
    $487 Oferta Promedio
    6 ofertas

    We are in the process of hiring a python developer. This posting is not for that. Our job description needs to include four questions that we can use to identify a competent developer. In particular, he needs to have a security background, as our product tracks python dependencies for vulnerabilities. Please send four question and answers. Ideally things that are not easily Googleable.

    $40 (Avg Bid)
    $40 Oferta Promedio
    1 ofertas

    We need assistance on a project, specifically: Setup NoSQL database (MongoDB) Take our architecture designs and implement the database API's need to be created to send data back/forth between the app and database Authentication as per the doc Testing to ensure it's bug-free Company/developer needs to be fluent in English We're developing an app to go with this and we will handle t...

    $2638 (Avg Bid)
    $2638 Oferta Promedio
    9 ofertas

    I am looking for senior web developer who has experience with Paytriot payment integration. Only need individual developer. Not team. More details will be shared via chat box.

    $134 (Avg Bid)
    $134 Oferta Promedio
    24 ofertas

    I need to build a mobile and web app, that is similar to certain review/rating website like justdial or ask.com. Key features of this app - 1. Allows posting reviews on other businesses 2. Reviews must be structured. Reviews/ratings can be liked, loved, disliked etc 3. Reviews/ratings can only be posted by members/users This is a long term project as it is a part of a larger app.

    $7 / hr (Avg Bid)
    $7 / hr Oferta Promedio
    18 ofertas
    whatsapp api integration 5 días left
    VERIFICADO

    need to build platform for WhatsApp business

    $16 (Avg Bid)
    $16 Oferta Promedio
    1 ofertas

    We are looking for a Developer who can build a cryptocurrency payment gateway system which can be integrated to third party platform (Meta Quotes software (MT4/MT5) and other Financial / online Casino platform including CRM ) There will be backend and frontend, admin, affiliate, merchant portals, etc. We can provide you our idea. Please respond if anybody have done similar project. We request ...

    $7569 (Avg Bid)
    $7569 Oferta Promedio
    66 ofertas

    I need some changes to an existing website.

    $15 (Avg Bid)
    $15 Oferta Promedio
    2 ofertas

    I need a knowledgable freelancer who will optimize back-end code to retrieve data, must implement the fastest method to retrieve records as speed is very important for my site. I need server response time under 200ms (requirement), current is about 2000~ms Analyze site speed and provide full report. freelancer needs to identify if issue is related to slow application logic, slow database querie...

    $238 (Avg Bid)
    $238 Oferta Promedio
    19 ofertas

    I am a Product Owner developing products using Scrum for past 10 years. I have an idea for a business of my own: Essentially it is a website where one user can list tasks to be done and other users search the tasks to be done and can bid for the work. There would be a CV / Job History element for both users. There would be the options to pay for tasks to be done (standard), barter (i.e. i do one t...

    $12 / hr (Avg Bid)
    $12 / hr Oferta Promedio
    3 ofertas
    site de matematica 4 días left
    VERIFICADO

    .As dori crearea unui site web gen projecteuler.net. Functionalitatile la fel . Designul schimbat . In mare parte este vorba despre creearea unui site cu probleme de matematica . Utilizatorul sa poata da raspuns intr-un textbox(tastatura matematica) la problemele publicate de mine , iar daca raspunsul este corect la problema sa bifeze problema din tabel. Clasamente in functie de numarul de prob...

    $323 (Avg Bid)
    $323 Oferta Promedio
    7 ofertas

    I have the shell of a Shiny Dashboard and would like help with adding action buttons that allow for datatable to add/modify/delete entries. The data is initially read from .rds file and upon saving of changes the .rds file needs to be updated so that any subsequent reading from the .rds reflects the updated data. I will supply the ui.R/server.R/global.R scripts that I have as a shell for code to b...

    $64 (Avg Bid)
    $64 Oferta Promedio
    7 ofertas

    We are looking for a Developer who can build a cryptocurrency payment gateway system which can be integrated to third party platform (Meta Quotes software (MT4/MT5) and other Financial / online Casino platform including CRM ) There will be backend and frontend, admin, affiliate, merchant portals, etc. We can provide you our idea. Please respond if anybody have done similar project. We request ...

    $7680 (Avg Bid)
    $7680 Oferta Promedio
    40 ofertas
    LinkedIn like system 4 días left
    VERIFICADO

    We are looking for LinkedIn like system for uob postings and job applications along with news feed, job pages and applicant profiles similar to LinkedIn Please submit the demo urls

    $4570 (Avg Bid)
    $4570 Oferta Promedio
    47 ofertas

    We are a bootstrapped startup in software sale and marketing business. we need a CTO to handle tech end of the startup. No salary is offered. Just equity in the startup. Candidate must be well versed with various stack and master in one or two.

    $14 (Avg Bid)
    $14 Oferta Promedio
    2 ofertas

    Java Spring Boot Developer with Angular 7 experience needed for 2 days . Must have experience with Gradle, Angular 7 and SpringBoot. Have some major improvements and changes in project. Need to complete all.

    $111 (Avg Bid)
    $111 Oferta Promedio
    11 ofertas

    Zecide models human reactions to market events to produce structured financial analysis and data science tools for traders. So we need to build a backend for something similar to social media platform, also having ML models deployed. Rest can be discussed.

    $139 (Avg Bid)
    $139 Oferta Promedio
    1 ofertas

    i need a man who can build website, give back links. expert in S.E.O & Digital Marketing

    $3 / hr (Avg Bid)
    $3 / hr Oferta Promedio
    19 ofertas
    Ruby on Rails Developer 3 días left
    VERIFICADO

    We are looking for a Ruby on Rails developer co-founder for our tech startup. Experience with databases is required. Thanks!

    $1068 (Avg Bid)
    $1068 Oferta Promedio
    25 ofertas

    Deliverable: Development of server side component for communicating with the Concox GPS devices – involving full protocol implementation and post-processing of data received. Good fit for job: Someone who is aware of client-server protocol development using Java

    $490 (Avg Bid)
    $490 Oferta Promedio
    2 ofertas

    I need an existing Code or API. I don't have time for trial and error :) If you have an API, please provide the link. If you have the Code already done. Then I will purchase the Source Code. Kindly place your bids if you have the requirements.

    $40852 (Avg Bid)
    $40852 Oferta Promedio
    24 ofertas
    Mobile App and website development 2 días left
    VERIFICADO

    App and website are already developed but not ideal. Need someone based in Singapore to take over development and maintenance.

    $25 / hr (Avg Bid)
    Local
    $25 / hr Oferta Promedio
    22 ofertas
    PAYMENT GATEWAY 2 días left

    We need frelancer that already have experienced in make payment gateway system like midtrans or doku in indonesia. Please bid this project if you have experienced work this project before

    $1513 (Avg Bid)
    $1513 Oferta Promedio
    26 ofertas
    Guest Post Selling Marketplace 1 día left
    VERIFICADO

    Full details of the project are included in the attached file. We will ignore automated bids. We will require interested parties to submit a plan on how they will go about delivering the project.

    $38744 (Avg Bid)
    $38744 Oferta Promedio
    35 ofertas

    hello, I need a booking page in my wix website, Full website is created just need one booking page. I will provide the reference site, It must be a multistep booking in which when a person select a service price automatically increase

    $18 (Avg Bid)
    $18 Oferta Promedio
    3 ofertas
    PHP Web Developer 1 día left
    VERIFICADO

    NearshoringID is a startup based in Bali, Indonesia that focuses on providing end-to-end solutions for companies based in Europe, Australia, and the U.S. We are looking for talented PHP Web Developers for a full-time OR freelance position, are you ready for a new challenge and grow professionally? Apply! Qualifications - Minimum of 2 years of experience as a PHP backend developer, and Jav...

    $1991 (Avg Bid)
    Local
    $1991 Oferta Promedio
    10 ofertas

    Need geo location redirects between USA and Canada. (Wordpress sites) Is it possible to detect IP address and redirect user to local specific website?

    $435 (Avg Bid)
    $435 Oferta Promedio
    33 ofertas

    I need an iPhone app. I would like it designed and built.

    $1373 (Avg Bid)
    $1373 Oferta Promedio
    16 ofertas
    3D model website development 23 horas left
    VERIFICADO

    I am looking for the PHP developer that have 3D website experience. There is a system like attached image, there is a Viewer in ThreeJS but we couldn't create the login authentication and billing parts. need to add these functions. Actually, the current Web system was made of Python, but the in-house Web engineers are generally familiar with PHP, so we want to use PHP for easy maintenance of...

    $505 (Avg Bid)
    $505 Oferta Promedio
    10 ofertas

    ayni back end servisle calisacak hem web sitesi hem de iOS uygulamasınn entegreli calisacak bir proje yapmak istiyorum.

    $325 (Avg Bid)
    $325 Oferta Promedio
    6 ofertas

    We need a custom booking system primarily for our own cleaning company. Please see [iniciar sesión para ver URL] All red-marked functions are not part of this project.

    $4263 (Avg Bid)
    $4263 Oferta Promedio
    88 ofertas

    There is a service created internally The purpose is to make it online and make it public. I am looking for a PHP engineer who can build authentication, billing and infra construction. Since there is a demo page of the service itself, I think it will follow the image of its design. is it possible to ask for design together? ◾️ System contents The service itself is content creation and download....

    $545 (Avg Bid)
    $545 Oferta Promedio
    11 ofertas
    I need an app designer 2 horas left
    VERIFICADO

    We are looking for an app that will allow sellers to upload a picture of their item and list it for sale. We would like the functionality of taking a particular commission from each sale. We would like a very light, clean and minimal aesthetic - with just a search bar in the centre and our brand logo at the top

    $3434 (Avg Bid)
    Local
    $3434 Oferta Promedio
    55 ofertas
    Hellocaveat.com Finalizado left

    I need you to design and build a website for my business. We’re generally looking for talent that can work with us on web design and development projects for client engagements as well.

    $50 / hr (Avg Bid)
    $50 / hr Oferta Promedio
    38 ofertas

    Principales artículos de la comunidad Backend Development