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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    39 搜到的工作,价格货币为 HKD

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

    $2900 (Avg Bid)
    $2900 平均报价
    5 个竞标

    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.

    $179 (Avg Bid)
    $179 平均报价
    5 个竞标

    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.

    $2377 (Avg Bid)
    $2377 平均报价
    34 个竞标

    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 Website is outdated so eventually you can revamp it for me.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...

    $140 / hr (Avg Bid)
    本地
    $140 / hr 平均报价
    20 个竞标
    Build website backend 5 天 left
    已验证

    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.

    $31895 (Avg Bid)
    $31895 平均报价
    85 个竞标

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

    $62 / hr (Avg Bid)
    $62 / hr 平均报价
    9 个竞标

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

    $239 (Avg Bid)
    $239 平均报价
    45 个竞标

    I have some work, in an Excel spreadsheet.

    $55 / hr (Avg Bid)
    $55 / hr 平均报价
    29 个竞标

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

    $382 (Avg Bid)
    $382 平均报价
    48 个竞标

    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.

    $119645 (Avg Bid)
    $119645 平均报价
    18 个竞标

    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.

    $7218 (Avg Bid)
    $7218 平均报价
    77 个竞标

    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...

    $1294 (Avg Bid)
    $1294 平均报价
    23 个竞标
    Dating App Completion 4 天 left
    已验证

    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...

    $10265 (Avg Bid)
    $10265 平均报价
    83 个竞标
    $4700 平均报价
    27 个竞标

    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

    $12744 (Avg Bid)
    $12744 平均报价
    41 个竞标

    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...

    $678 (Avg Bid)
    $678 平均报价
    14 个竞标

    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.

    $3819 (Avg Bid)
    $3819 平均报价
    8 个竞标

    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.

    $288 (Avg Bid)
    $288 平均报价
    2 个竞标

    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...

    $20562 (Avg Bid)
    $20562 平均报价
    9 个竞标

    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.

    $1044 (Avg Bid)
    $1044 平均报价
    24 个竞标

    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.

    $55 / hr (Avg Bid)
    $55 / hr 平均报价
    18 个竞标
    whatsapp api integration 3 天 left
    已验证

    need to build platform for WhatsApp business

    $125 (Avg Bid)
    $125 平均报价
    1 个竞标

    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 ...

    $59519 (Avg Bid)
    $59519 平均报价
    70 个竞标

    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...

    $1912 (Avg Bid)
    $1912 平均报价
    18 个竞标
    realidad aumentada 3 天 left
    已验证

    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,...

    $4801 (Avg Bid)
    $4801 平均报价
    12 个竞标

    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...

    $94 / hr (Avg Bid)
    $94 / hr 平均报价
    3 个竞标
    site de matematica 2 天 left
    已验证

    .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...

    $2502 (Avg Bid)
    $2502 平均报价
    8 个竞标

    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...

    $499 (Avg Bid)
    $499 平均报价
    7 个竞标

    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 ...

    $60867 (Avg Bid)
    $60867 平均报价
    39 个竞标
    LinkedIn like system 2 天 left
    已验证

    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

    $36205 (Avg Bid)
    $36205 平均报价
    46 个竞标

    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.

    $109 (Avg Bid)
    $109 平均报价
    2 个竞标

    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.

    $834 (Avg Bid)
    $834 平均报价
    12 个竞标

    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.

    $1083 (Avg Bid)
    $1083 平均报价
    1 个竞标

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

    $23 / hr (Avg Bid)
    $23 / hr 平均报价
    19 个竞标
    Ruby on Rails Developer 1 天 left
    已验证

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

    $8512 (Avg Bid)
    $8512 平均报价
    28 个竞标

    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

    $3819 (Avg Bid)
    $3819 平均报价
    2 个竞标

    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.

    $322302 (Avg Bid)
    $322302 平均报价
    27 个竞标
    Mobile App and website development 6 小时 left
    已验证

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

    $201 / hr (Avg Bid)
    本地
    $201 / hr 平均报价
    22 个竞标
    PAYMENT GATEWAY 5 小时 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

    $11988 (Avg Bid)
    $11988 平均报价
    25 个竞标

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