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.

Conform celor 141,354 recenzii, clienții îi evaluează pe Backend Developers cu 4.84 din 5 stele.
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    I'm looking for a seasoned Ethereum blockchain developer with a deep understanding of the platform, smart contracts, and Decentralized applications (DApps). Key Responsibilities: - Design, develop and launch smart contracts on Ethereum - Create groundbreaking Decentralized applications (DApps) This project is an excellent opportunity for a blockchain enthusiast eager to shape next-gen blockchain applications. Apply now to join this exciting venture!

    $11 (Avg Bid)
    $11 Oferta medie
    3 oferte
    Live Coding Interview Platform 6 zile left
    VERIFICAT

    I am in need of a cutting-edge live coding interview platform that should be flexible to support the skills we are recruiting for. The ideal bidder should have substantial experience in developing platforms similar to the following: CodeSignal, CoderBytes, TestGorilla, HackerRank, HackerEarth, and Codility This platform needs to have an array of features that will elevate our interviewing process. To be more specific: - Code editing capabilities: The platform should offer functionality for live code editing, allowing our potential hires to demonstrate their coding knowledge before we recruit them. - Video conferencing: A built-in video conferencing feature is needed for ensuring smooth and well-structured communication between the parties during the interview.

    $17 / hr (Avg Bid)
    $17 / hr Oferta medie
    43 oferte

    I am searching for an experienced developer who can build a social media platform closely mimicking the features of Facebook. The distinguishing factors of the project will be: - Exact replication: The platform should duplicate all standard features such as feed, friends, settings, searches, messages and groups, as seen on Facebook. No customizations or additional features are needed. - Cross-Platform: The social media application should be operable both on web browsers and mobile devices (iOS, Android), delivering a seamless user experience on every device. - Technology Stack: While the project doesn't require a specific technology stack, the chosen freelancer should suggest the most suitable one to accomplish the task efficiently and effectively. Ideal candidates for this projec...

    $881 (Avg Bid)
    $881 Oferta medie
    26 oferte

    I am seeking a talented blockchain developer with in-depth familiarity with Ethereum, for the creation of a Decentralized Application (DApp) primarily aimed at businesses. Key aspects of this project involve: - Extensive knowledge of Ethereum and its development architecture. - Wide experience in creating DApp on the Ethereum blockchain. - Understanding the specific needs of businesses related to blockchain applications. The developer should have a proven track record in designing, developing, and deploying DApps for business usage. Exceptional problem solving skills, coupled with strong programming abilities, would be essential to success in this role. A clear understanding of the latest blockchain trends in business will be highly beneficial.

    $96 (Avg Bid)
    $96 Oferta medie
    5 oferte

    As the cornerstone of my new startup venture, I need a professional, user-friendly website and app built. Experienced freelancers, particularly those with development backgrounds, are preferred. Key Qualities & Skills: - Proven track record of delivering high-quality app and website designs. - Strong past work samples and experience to showcase. Project Requirements: - The design should be focused on increasing online conversions and improving customer engagement. - The platform should be clutter-free and intuitive to navigate, keeping the user experience in mind. - The website and app should work seamlessly to deliver consistent brand messaging and user experience. - Ongoing support and revisions as my startup grows and evolves. To expedite the process, please attach examples of...

    $436 (Avg Bid)
    $436 Oferta medie
    19 oferte
    Senior PHP Developer required. 4 zile left
    VERIFICAT

    Description: create a plugin or custom code in WordPress theme that will enable users to generate CVs directly on our platform. The ideal candidate will have a strong background in PHP development and experience with plugin development for web applications. Requirements: - Develop a plugin or custom code in PHP theme to add a CV generation feature to our website. - Enable users to submit their resume details through a user-friendly interface. - Utilize the submitted details to generate a visually appealing CV in PDF format with color formatting. - Implement functionality to save generated CVs to our database for future reference. - Ensure seamless integration of the plugin with our existing website architecture. - Collaborate with the design and product teams to ensure the CV generation ...

    $111 (Avg Bid)
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    32 oferte

    I need an experienced developer to setup a serverless architecture on Google Cloud Platform for my Android app. The main function is content delivery and the development language to be used for the implementation is React Native. Requirements: - Experience with serverless architecture - Proficiency in React Native - Familiarity with Google Cloud Platform/AWS All interested candidates should list related experience and provide samples of previous work if available, preferably with similar projects. Note that we may have a test task to prove your skills. I look forward to your proposals.

    $29 (Avg Bid)
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    7 oferte

    I’m in need of a capable web developer who can construct a full-featured B2B SaaS web application for digital loyalty & discount cards that is compatible with both Apple Wallet and Google Wallet. Similar SaaS web applications: - (best one) - - The key features the application should have include: - User (business) registration and login: A secure system where users can create and access their accounts - Loyalty & discount card management: A user-friendly interface to design digital loyalty & discount cards like here - Ability able to scan customers card QR code to add loyalty stamp or redeem a discount (without requiring a separate mobile app) like here -A subscription based system Monthly/Annually to access your account. - Mobile wallet integration: Compatibil...

    $1538 (Avg Bid)
    $1538 Oferta medie
    59 oferte

    Nextjs developer needed for an ongoing project. Skills: -- Nextjs 14 (app directory) -- Next UI (UI lib) -- Tailwind CSS -- Knowledge of creating responsive and beautiful UI/UX designs Position of Responsibility: -- 80% work is in Frontend only i.e. creating UI, there will be back end developer whom you need to contact and discuss. -- Code Review of the existing project -- expected daily time: 7-8 hrs -- Meetings in once in a while for progress

    $97 (Avg Bid)
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    13 oferte

    This weekend needs a dedicated Node.js expert to complete essential functionalities in my project. Funny part: the focus is targeted on specialists who have prior experience working with stream API. Here's what I am looking for: - You need to be available full time this Saturday and Sunday. - Expected experience: Expert in Node.js, particularly comfortable with stream API. Remember, this is no playground for novices, you must have substantial experience in Node.js. Proven background with developing new functionalities is non-negotiable. If you slot in my business’s growth, I look forward to welcoming you aboard.

    $11 / hr (Avg Bid)
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    22 oferte

    I'm in need of an experienced PHP developer to implement the backend of a live stock farming web application. The application requires the following features: - User authentication: I want two user types, admins and regular users, with distinct access rights. - Data management: The application should be capable of handling and managing a large amount of data efficaciously. Following modules should be done Cattle Management – flock management, indivual animal database & reports based on all modules, feeding module & fcr ratio, grazing period, weight gain, shelter management based on health, weight, activities Fodder Module – Fodder cultivated, daily used, need to be stocked, land utilized for cultivation, which fodder is helping in what weight gain, modules for ...

    $496 (Avg Bid)
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    11 oferte

    Website React/ – UI – Mobile Responsive Compatible with Chrome, IE, Brave, Opera Web3 – Wallet Connect v2 – OKX Wallet – Binance Wallet ---- 1. Header 1.1. Enter Metaverse We will embed our WebGL game demo in this page. 1.2. Mainnet Events 1.2.1. Token Sale We will have token sales in this page. Should be Round #, Token Allocation, Price, Status, View under the Round Information. Should be Status (Live, Paused, Expired), Price, Buy Token with Max button, Buy Time, Lock Time 1.2.2. Vesting/Claim Portal 1.2.2.1. Vesting v1 • In this page we will embed Token Claim function and ui/ux for old token buyers. • Holders will see their locked total token amount, installments 1.2.2.2. Vesting v2 • In this page we will embed Token Claim function and ...

    $2197 (Avg Bid)
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    I am facing some issues with my Laravel backend. It seems to have some sort of a problem with data values and I need an expert to fix this immediate. Your task will be: - Scrutinizing the current state of the backend - Locating the specific components that are causing data value errors - Fixing the data value issues to ensure flawless backend operation It is essential that you are proficient with Laravel and have significant experience in backend development. Familiarity with database management and VueJS will be highly appreciated. Your ability to quickly pinpoint and rectify errors will be crucial. I need this issue fixed urgently, so commitment to prompt and efficient work is vital. Precision and attention to detail are key skills needed to ensure the data value issue is correctly di...

    $12 (Avg Bid)
    $12 Oferta medie
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    When entering the Games page, all games will load at once: 50 games, followed by a "Load more" button to display the next 50 games. Clicking on the relevant game in the "Recent Winners" section will navigate to that game. The size of the banner on mobile will be slightly increased. APIs for games will be connected to retrieve callbacks. Button colors will be standardized. Excess files on FTP will be deleted. Site:

    $270 (Avg Bid)
    $270 Oferta medie
    39 oferte

    I'm seeking an experienced Flutter developer who can create an application suitable for an array of platforms; Android, iOS, Web, Windows, and Mac. The application will need to be versatile, with functionality that appeals to several demographic groups - teenagers, young adults, the elderly, and even kids. The ability to understand and cater to these different user interfaces will be crucial. The app must entail: - User Authentication: Freelancer must be adept at creating a secure, robust login module. - Push Notifications: Freelancer should have expertise in implementing real-time push notifications to enhance user engagement. - In-app Purchases: Past experience in setting up in-app purchasing systems will be needed. - Referal Code System: Freelancer should be able to set up a refe...

    $738 (Avg Bid)
    $738 Oferta medie
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    I run an educational website where I host a collection of instructional videos. Given the value these hold, I am seeking a proficient freelancer to integrate a DRM or content protection system for my website. I want to protect my videos like how streaming services do. You can't download / screenshot / record their videos (if you do, you get a black screen). I want the same for my website.

    $2374 (Avg Bid)
    $2374 Oferta medie
    25 oferte
    Explicit Filtering Phase -- 2 S-a încheiat left
    VERIFICAT

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

    $470 (Avg Bid)
    $470 Oferta medie
    29 oferte

    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 Oferta medie
    10 oferte

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