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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    38 trabajados encontrados, precios en USD

    Queremos mejorar nuestra página, tiene algunos inconvenientes de links quebrados, Buscamos una página más práctica para nuestros clientes, en ella tenemos, servicios, clientes con que hemos trabajado, datos de contacto y queremos incluir un chat, necesitamos que la parte de servicios pueda incluirse de más servicios o reorganizarlos, y en la parte de clientes que...

    $163 (Avg Bid)
    $163 Oferta Promedio
    24 ofertas
    realidad aumentada 2 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,...

    $616 (Avg Bid)
    $616 Oferta Promedio
    12 ofertas

    This will be an end-to-end app development outline (PDF) for a startup project: Yoke. In basic terms, we are working to develop an app that allows users to transfer money internationally peer-to-peer. Unlike PayPal, Cashapp or others, our vision is for the system to work in any country where an iOS app can be downloaded. So, how would this be done? First, all transfers would happen between user ...

    $1409 (Avg Bid)
    $1409 Oferta Promedio
    9 ofertas

    I want to get a blockchain project done based on Ethereum Blockchain to address supply chain tractability and authenticity.

    $372 (Avg Bid)
    $372 Oferta Promedio
    5 ofertas

    Looking for someone who is a Prestashop Expert. Who can change the language from english to german. Overwriting the languages! No need for german language knowledge, because I am german.

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

    Hey Guys, I am looking for Professional Web and Mobile Application Developer for Business. I would like to design and Built. Please bid on this project with real Budget. More details share for selected freelancer. Bid have "WFPM" on second line to confirm real bid. spam bidder do not bid on this project.

    $305 (Avg Bid)
    $305 Oferta Promedio
    34 ofertas
    Webmaster needed 6 días left

    Need webmaster to add humorous/trivia etc. material periodically to my personal website. Will be provided as Excel sheets with lists. Maybe pics with text. Maybe a word document with a funny story etc Will pay $20 per hr max. Website is outdated so eventually you can revamp it for me. For now we need to work with what is there and that can be time consuming so I need someone who has firm comman...

    $18 / hr (Avg Bid)
    Local
    $18 / hr Oferta Promedio
    20 ofertas
    Build website backend 5 días left
    VERIFICADO

    We are looking for a team to build the backend of a website for us. The team need to be familiar with one of this programming languages: * Python * NodeJS * Ruby The team also need to have experience using AWS services such as SQS, SNS, Lambda, ECS, RDS, DynamoDB, etc. The project also has several third party integrations.

    $4088 (Avg Bid)
    $4088 Oferta Promedio
    88 ofertas
    Fullstack Ruby on Rails Expert 5 días left
    VERIFICADO

    Hello, I searching Ruby on Rails expert to work on complex task.

    $8 / hr (Avg Bid)
    $8 / hr Oferta Promedio
    9 ofertas
    CSS work Responsiveness issues 5 días left
    VERIFICADO

    I need a freelancer experienced in css code and that can work quickly following a document and complete minor responsiveness issues in my website.

    $31 (Avg Bid)
    $31 Oferta Promedio
    45 ofertas
    $7 / hr Oferta Promedio
    30 ofertas

    I need a freelancer familiar with the Divi theme who can build a one page website for a builder that is fully dynamic.

    $49 (Avg Bid)
    $49 Oferta Promedio
    48 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 demo link. If you have the Code already done. Then I will purchase the Source Code. Kindly place your bids if you have the requirements.

    $15350 (Avg Bid)
    $15350 Oferta Promedio
    18 ofertas

    I need an iPhone and Android app. I would like it designed and built. The mobile app is for the website: https://thesdeals.com. The content in the app should be dynamically changeable from a backend application. The content will consist of images and text and would redirect to a website. Push notifications should be supported. Waiting for the offers. A PoC would be required.

    $926 (Avg Bid)
    $926 Oferta Promedio
    77 ofertas
    Dating App Completion 4 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...

    $1337 (Avg Bid)
    $1337 Oferta Promedio
    85 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

    $1635 (Avg Bid)
    $1635 Oferta Promedio
    41 ofertas

    Hello there I have the source code for my app and everything is done already I need a developer who can customize it for me change the splash by placing the logo in the middle on start screen check the screenshots I have attached You should also make some adjustments on image quality because my app works like Instagram you should make some adjustments so that when a users posts an image it should...

    $87 (Avg Bid)
    $87 Oferta Promedio
    14 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.

    $490 (Avg Bid)
    $490 Oferta Promedio
    8 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.

    $37 (Avg Bid)
    $37 Oferta Promedio
    2 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...

    $2600 (Avg Bid)
    $2600 Oferta Promedio
    10 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 2 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 ...

    $7636 (Avg Bid)
    $7636 Oferta Promedio
    70 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...

    $245 (Avg Bid)
    $245 Oferta Promedio
    18 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 2 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...

    $321 (Avg Bid)
    $321 Oferta Promedio
    8 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 ...

    $7809 (Avg Bid)
    $7809 Oferta Promedio
    39 ofertas
    LinkedIn like system 1 día 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

    $4645 (Avg Bid)
    $4645 Oferta Promedio
    46 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.

    $107 (Avg Bid)
    $107 Oferta Promedio
    12 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 12 horas left
    VERIFICADO

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

    $1092 (Avg Bid)
    $1092 Oferta Promedio
    28 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

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