Backend Development Jobs

Backend Development is a critical part of any website or software product. It starts with understanding the client's goals and developing solutions that achieve those goals in a cost-effective and scalable way. Backend developers are responsible for more than just code: they have to have a strong understanding of databases, frameworks, and development in general. A backend developer uses this knowledge to turn complicated customer requirements into a efficient, automated solutions that the user experience (UX) team can work with.

When it comes to Backend Development, experience matters - you want someone who's seen a variety of projects and knows the best technology to use for your specific scenario.

Here's some projects that our expert Backend Developer made real:

  • Developing connected systems between websites and local servers
  • Integrating software systems using modern real-time protocols
  • Building bespoke solutions tailored to customer requirements
  • Taking over existing projects and resolving tricky bugs
  • Developing custom solutions using tried and tested frameworks

Backend Development encompasses a wide variety of skills and technologies, so it helps to have an experienced developer on your team who can navigate the complexities of building high-quality solutions. Our expert developers have already undertaken a variety of different projects and can jump into yours with confidence - benefit from their expertise, get your project completed quickly and correctly, and reduce time-to-market for your product. Get in touch today to discuss bringing your project to life, or post your own project in Freelancer.com to hire an experienced Backend Developer.

From 145,411 reviews, clients rate our Backend Developers 4.85 out of 5 stars.
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    17 jobs found, pricing in USD

    I'm in need of an experienced full-stack developer who specializes in Java, specifically the Spring Boot framework, to create an admin panel for a betting website. Key Functionalities: - Ledger: Implement a comprehensive ledger system that tracks all financial transactions including shares, commissions and other dealings. - Cash Transactions: Develop a log to manage and record all cash transactions within the system. - Panel Creation: Set up the necessary panels such as Admin, sub-admin, SuperAgent and Agent. - Share distribution: Implement a system that tracks and manages the distribution of shares. Additional Information: - I already have a design in place for the admin panel, so the focus will be on the programming and functionality. - It is crucial that the system gen...

    $2692 (Avg Bid)
    $2692 Avg Bid
    5 bids

    I'm seeking a developer to create an incentive-based content sharing application that provides users with the opportunity to engage with posts, share content, like, share application URL, and earn points. These points can then be converted into money, which is paid out to the users. Key Features: - Web-Based: The application will be exclusively web-based, allowing users to access it from their browser. - Point-Based Rewards: The heart of the application lies in a point-based system. Users will earn points for various interactions, including sharing content, liking content, reading content and sharing application link - Points-to-Money Conversion: One of the main goals of the project is to allow users to convert their accumulated points into money. This money will be paid out throu...

    $187 (Avg Bid)
    $187 Avg Bid
    25 bids

    I'm seeking an expert to develop an advanced AI-powered platform. The goal is to provide comprehensive data insights, predictive analytics, and customer behavior analysis. The platform will be integrated with OpenAI's ChatGPT API and other relevant tools. Key Requirements: - Implement Natural Language Processing (NLP), Machine Learning (ML) algorithms, and Data Visualization tools within the platform. - The platform should be capable of analyzing and providing insights on: - Text data - Numerical data - Image data Data Visualizations: - I require dynamic visualizations with real-time data updates. These visualizations should be highly interactive and allow for advanced customization. Ideal Skills & Experience: - Proficiency in AI, NLP, ML, and data analysis is essent...

    $637 (Avg Bid)
    $637 Avg Bid
    35 bids

    I am seeking a skilled developer to create a specialized Windows desktop application. The central purpose of the application is the emulation of both mouse and keyboard to a controller. This application must be multifunctional, featuring: - Programmable buttons - Keyboard to controller binding - Adjustable sensitivity - Macro recording - Key auth system - Custom macros - Adjustable sensitivity (Duplicate, but leaving for the sake of keeping original input) The ideal freelancer for this task should have significant experience in desktop application development and a deep understanding of keyboard/mouse emulation processes [Will provide the general idea of how I want it to be done and what drivers etc to use]. Understanding of the Windows operating system is critical due to the specified ...

    $4069 (Avg Bid)
    $4069 Avg Bid
    29 bids

    As a key figure en route to the finalization of my project, I'm sourcing a proficient website developer who'll have an instrumental role in erecting a subscription-based service website. Highlights of the Project: - The site will be centered around stellar user experiences for individuals in particular. - Key features to be implemented into this project include user registration and login, a secure and efficient payment processing system, and a manageable subscription interface. Prospective website developers should ideally have the below skills and experience: - An excellent understanding of UI/UX best practices for subscription-based websites. - Experience in implementing secure e-commerce elements such as Login/Registration, Payment Systems, and Subscription Management. - H...

    $8217 (Avg Bid)
    NDA
    $8217 Avg Bid
    119 bids

    We are looking for experienced developers to build a comprehensive locker booking system for tourists. The system should include an Android and iOS app for users, a web admin panel for locker owners, and a super admin panel for overall management. Below are the detailed requirements: User Mobile App (Android & iOS): 1. User Registration and Authentication: - User sign-up and login functionality using email and mobile number. - Password recovery option. 2. Locker Search and Booking: - Users can search for locker locations based on their current location or input location, along with the desired date. - Display a list of available locker locations with details such as price per bag per hour, customer ratings, nearby locations, and a description of the locker location. -...

    $26 / hr (Avg Bid)
    $26 / hr Avg Bid
    56 bids

    I'm seeking an expert to develop an advanced AI-powered platform. The goal is to provide comprehensive data insights, predictive analytics, and customer behavior analysis. The platform will be integrated with OpenAI's ChatGPT API and other relevant tools. Key Requirements: - Implement Natural Language Processing (NLP), Machine Learning (ML) algorithms, and Data Visualization tools within the platform. - The platform should be capable of analyzing and providing insights on: - Text data - Numerical data - Image data Data Visualizations: - I require dynamic visualizations with real-time data updates. These visualizations should be highly interactive and allow for advanced customization. Ideal Skills & Experience: - Proficiency in AI, NLP, ML, and data analysis is essent...

    $153 (Avg Bid)
    $153 Avg Bid
    10 bids
    Mobile App Development 3 days left
    VERIFIED

    Hello, ***Background*** I have a mobile application, TAP Social, that is currently live on Android Playstore and iOS app store for people to download and use. My old developer has not properly completed tasks and so I am looking for a new developer to finish debugging my iOS application and do other improvements for iOS and Android. IMPORTANT - if you re-write the mobile application into one code on Flutter (task #9) then some things specific to Android and iOS are not needed. ***Links*** - Mobile application website -> - iOS app store listing -> - Android store listing -> - Video demo (basic) -> ***Specifications*** - Native coding for Android and iOS - iOS version is coded in Swift - Android version is coded in Java and XML - Hosting of website is using Hostinger wi...

    $407 (Avg Bid)
    $407 Avg Bid
    95 bids

    I have over a decade of experience as a Software Developer, working across the Finance, Healthcare, and Technology sectors. I need a professional who specializes in resume writing to help me rephrase my responsibilities in a compelling manner. Key Responsibilities: - My primary programming language is Java, and I have used it extensively in my past roles. - I have experience working with Spring and Spring Boot on the back end. - Additionally, I have some exposure to front-end technologies. I need someone with: - Profound knowledge of Java and associated technologies - Experience in writing professional resumes, particularly in the technology sector - A strong understanding of the skills and responsibilities typically associated with software development.

    $23 (Avg Bid)
    $23 Avg Bid
    55 bids
    (K)Website Development 2 days left
    VERIFIED

    I'd like to build a simple job website. You can find the details here - 1. Your best web frontend tech stack. 2. Your best web backend tech stack. 3. Your preferred database. 4. Your estimated cost and timeline. I will check all the developers that answered the above 4 questions and will hide others. So no worries even though you bid late if you are a serious bidder. Thanks, and good luck.

    $572 (Avg Bid)
    $572 Avg Bid
    149 bids

    I need a WordPress Multi-Site with Multi-tenant capability (a different database for each child-site) The idea is to allow each user to have a separate database base while using the same WP codebase. Every WP dev. must be familiar with how multisite works, it’s a standard WordPress install (12 tables for the main WP site) plus +6 tables for the network site functionality. Each new child site creates 12 additional tables differentiated by adding a new id to the table prefix name: wp__commentmeta wp__comments wp__links wp__options wp__postmeta wp__posts wp__termmeta wp__terms wp__term_relationships wp__term_taxonomy wp__usermeta wp__users So the main site wp_1_options wp_1_postmeta wp_1_posts wp_1_termmeta wp_1_terms wp_1_term_relationships wp_1_term_taxonomy wp_1_...

    $167 (Avg Bid)
    $167 Avg Bid
    44 bids

    I am looking for a professional web developer (front-end & back-end) to create an engaging and user-friendly informational website. My website will primarily cater to the general public, so it needs to be accessible and easy to navigate for a wide range of users. The site should have a modern design that reflects the purpose of providing useful information. Key components of the website include: - Clear, concise and well-organized content - Engaging and visually appealing layout - Easy-to-use navigation I'm looking for a developer who has experience in building websites for hospital and is able to provide suggestions for how to make my site more engaging and effective.

    $100 (Avg Bid)
    $100 Avg Bid
    71 bids
    Website Professional 1 day left
    VERIFIED

    I am seeking a skilled developer to create a website that allows users to select various live football statistics, perform cross-referencing, and send notifications. The website will leverage the API-Football to fetch live match data and meet specific criteria. **Project Requirements:** 1. **API Integration:** Integrate the API-Football to access live match data. (API Key will be provided) 2. **User Interface:** Create a user-friendly interface where users can select and cross-reference different football statistics. 3. **Notifications:** Implement a system to send notifications via Telegram based on user-defined criteria. 4. **User Registration and Login:** Develop a user registration and login system to manage user accounts. 5. **Payment System:** Integrate a payment system via PayPal t...

    $256 (Avg Bid)
    $256 Avg Bid
    130 bids
    Mobile App Developer Needed 1 day left
    VERIFIED

    Are you a passionate and skilled mobile app developer looking for a challenge. If so, I want to hear from you! I'm in search of an experienced mobile app developer to help create an sport app that works like tinder and function efficiently on both iOS and Android. Key Responsibilities: Design, develop, and maintain native iOS and Android apps for our new app Write clean, maintainable, and efficient code Test and debug apps to ensure they are bug-free and perform well Stay up-to-date with the latest mobile development technologies and trends You will be responsible for the end-to-end development of this app, ensuring it is user-friendly, efficient and bug-free. The app should be compatible and work well on both iOS and Android platforms, so experience with both systems is essential...

    $1238 (Avg Bid)
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    156 bids

    Explicit Filtering Phase project as discussed in chat for phrase detection and resultant redirect.

    $470 (Avg Bid)
    $470 Avg Bid
    29 bids

    Hello! I need someone to build this site for me, ideally if you already have experience in this industry. As a reference I can offer already finished leaked source codes. (needs to be integrated with Bitcoin payment gateway, and I don't want to redirect users, I want it to be displayed everything on my site) (I will provide Bootstrap frontend)

    $176 (Avg Bid)
    $176 Avg Bid
    10 bids

    Agence de voyages spécialisée la commercialisation de séjour dans des logements de types locatifs, nous souhaitons automatiser la mise à jour des disponibilités des hébergements via les calendriers iCal des établissements, synchronisés toutes les heures pour créer un fichier CSV mis à disposition sur un serveur FTP. Une interface utilisateur permettra la gestion des établissements et logements, la visualisation des disponibilités, et la recherche selon divers critères. Une API ouverte offrira un accès en lecture seule aux données de disponibilités. La mise à jour manuelle sera possible à tout moment. Le projet comprend l'étude, le design, le dével...

    $1356 (Avg Bid)
    $1356 Avg Bid
    13 bids

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