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.

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    20 งานที่พบ, การเสนอราคา USD

    I'm in need of a skilled Full-Stack Developer with proficient knowledge in JavaScript, particularly in Node.js and react I want a complete bookstore website with basic crud operations with firebase and responsibilities include but are not limited to: - Building high-performing, scalable applications - Writing maintainable, testable, efficient code - Employing Firebase as the database for the project Experience & Skills: - Proven experience with JavaScript and Node.js - Knowledge and experience with Firebase - Understanding of non-relational databases - Ability to work independently and in team settings - Strong problem-solving skills

    $86 (Avg Bid)
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    21 คำเสนอราคา
    Crypto POS Backend 4 วัน left
    ยืนยันแล้ว

    Find Project Description here - Upon completion, push the code to a public repository and post the link here

    $517 (Avg Bid)
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    22 คำเสนอราคา
    Trophy icon Crypto POS Backend 10 ชั่วโมง left

    Find Project Description here - Upon completion, push the code to a public repository and post the link here

    $700 (Avg Bid)
    แนะนำ การันตี ปิดผนึก การประกวดชั้นนำ
    Dynamic CorePHP Site for Products and brands display 4 วัน left
    ยืนยันแล้ว

    I'm looking for a skilled developer to create a modern, vibrant website using CorePHP. The design should be bold and colorful, catering to a business professional audience. Key Requirements: - Frontend: The site should offer a minimalistic yet engaging design that is appealing to the eye. - Backend: Solid development in CorePHP to ensure all functionalities work smoothly and efficiently. - Product Display: The site will be primarily for displaying products and brands, so it must contain capabilities for product search and filtering. - Interactive Elements: We would also like to incorporate interactive product displays to make the user experience more engaging and dynamic. Ideal Skills: - Strong proficiency in CorePHP to develop and maintain a dynamic website. - Prior experience wit...

    $145 (Avg Bid)
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    24 คำเสนอราคา

    I'm looking for an experienced Ruby on Rails developer who can handle key backend development tasks and manage our databases. The ideal candidate for this position should have: - Expertise in Ruby on Rails: We need someone who knows Rails inside out and can deliver high-quality backend solutions efficiently. - Database Management Skills: Experience with managing databases and optimizing their performance is crucial. - Problem-solving and Communication Skills: Excellent problem-solving abilities and effective communication are essential. - Experience with Rails 5.x, 6.x, or 7.x is a plus, but not a requirement. The main focus should be on your expertise and experience in developing robust and efficient backend systems using Ruby on Rails.

    $1170 (Avg Bid)
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    68 คำเสนอราคา

    I'm looking for an experienced Bubble developer to help build an application with key features. Although specific features haven't been laid out, the freelancer would need to be comfortable working with user authentication, real-time messaging, and push notifications. Ideal Skills: - Deep experience in Bubble App Development - Proven expertise with real-time messaging and user authentication - Ability to create a push notification system As details about desired aesthetics are not provided, I look for a freelancer with versatility in design ranging from modern minimalism to professional elegance. Although the project brief is still being finalized, please include your portfolio, past work, and a detailed project proposal in your application. This helps highlight your experienc...

    $180 (Avg Bid)
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    52 คำเสนอราคา
    Matrimonial CRM Development with WhatsApp 3 วัน left
    ยืนยันแล้ว

    Notes------- stay away timepass and without knowledge increase budget I am seeking a skilled freelancer to develop a comprehensive matrimonial CRM system with integrated WhatsApp communication and backend integration. The CRM should streamline lead management, communication, and data synchronization between the website backend and CRM platform. Here are the key features required: 1. Customizable pipelines for lead management and sales process tracking. 2. Dedicated hotline feature for direct communication with call logs. 3. Negative client management system to track and resolve complaints. 4. Lost client management system to capture feedback for improvement. 5. Profile sending tracking to monitor the distribution of user profiles. 6. Last interaction reminders and follow-up reminders fo...

    $463 (Avg Bid)
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    29 คำเสนอราคา
    Instant B2B Data Integration System 2 วัน left
    ยืนยันแล้ว

    **Purpose:** To collect data (product information, stock status, prices, etc.) in the B2B programs of 8 different suppliers. Developing software that can instantly capture data and automatically integrate this data with the user's own sales system. - **Main Features:** - Ability to securely log in to each supplier's B2B system. - Ability to instantly capture and process data. - Conversion and integration of the captured data into a format suitable for the user's system. 1. **Backend Development:** Required for system integration and data processing. 2. **Data Scraping/Web Scraping:** It is important to extract data from suppliers' B2B programs. 3. **API Development/Integration:** To securely integrate with suppliers' systems and retrieve data. 4. **Database Managem...

    $1339 (Avg Bid)
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    46 คำเสนอราคา

    I'm looking for an experienced Bubble developer to help build an application with key features. Although specific features haven't been laid out, the freelancer would need to be comfortable working with user authentication, real-time messaging, and push notifications. Ideal Skills: - Deep experience in Bubble App Development - Proven expertise with real-time messaging and user authentication - Ability to create a push notification system As details about desired aesthetics are not provided, I look for a freelancer with versatility in design ranging from modern minimalism to professional elegance. Although the project brief is still being finalized, please include your portfolio, past work, and a detailed project proposal in your application. This helps highlight your experienc...

    $169 (Avg Bid)
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    31 คำเสนอราคา
    IoT Data Sharing & Module Management 2 วัน left
    ยืนยันแล้ว

    I need a system for an IoT-based project in which a WiFi module will share data to an SQL server. This needs to function within a SAAS environment with subscription per device. Main features include: - Admin and User Modules - Managed subscriptions per device - Real-time data alerts In the Admin Module, the following functionalities should be available: - User Management: Admin can manage and monitor users - Device Permissions: Admin can determine how much data a user can view - Monitor Device Data: Admin can view data from all devices - Payment Module: Ability to process transactions For the User Module, users should be able to: - View specific device data as permitted by the administrator - Receive alerts via data changes - Make payments for their subscriptions The ideal freelancer w...

    $386 (Avg Bid)
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    Build a new crypto wallet using TrustWallet open souce 1 วัน left
    ยืนยันแล้ว

    Build a custodial crypto wallet using TrustWallet open source code. Requirement 1. admin panel required admin can 1. change username & password 2. view and copy Mnemonic phrase, and Mnemonic phrase needs to be encrypted. 3. soft delete and undelete 4. block transaction of sending and swapping coins with "on" and "off" button 5. set or release user as admin 2. backend code required All major coins and network should be included

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    Integrate AI Chatbots into my website and some Backend Coding 1 วัน left
    ยืนยันแล้ว

    Hi! I’m looking for a developer to create an easy way for me to embed on my website custom chatbots I make in Claude, OpenAI GPT/Assistants etc., and limit each user’s access. **** Summary: ***** This is my end goal: I create various types of chatbots. Most are only based on prompts I write, a few will have to reference some PDFs with ~200 pages. I want to sell access to them. Example: A customer pays $10 and gets access to talk to a certain chatbot for 20 minutes. After those 20 minutes are up, the customer has to blocked from chatting any more and be prompted to pay for another session. I will be selling access to the first chat session through another marketplace. (It must be that one, this can't be discussed.). I will set it up myself so that after they purchase...

    $1536 (Avg Bid)
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    58 คำเสนอราคา
    Legal Doc Fields/w Progress Bar 1 วัน left
    ยืนยันแล้ว

    This project is to create a (Legal Zoom) type of website with various documents starting with privatization. Individual will set up fields for a project for consumer to fill out on a particular order and there will be an admin side for each State where certain field will be changed each election by admin pertaining to the docs of that state. The starting docs will be for the state of Michigan and we will expand from there. Other work TBD.

    $350 (Avg Bid)
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    4 คำเสนอราคา

    I'm in search of a skilled full stack developer to help me build a mobile application. The project entails the following: - **Languages and Frameworks**: - Expertise in HTML/CSS, JavaScript, and Python is a must. - **Functionality Requirements**: - Incorporating user authentication and login features. - Integration with various third-party APIs. - **Audience**: - The target audience for this website is the general public. Ideal candidates should have a proven track record in full stack development and be able to deliver a secure and efficient end product.

    $5049 (Avg Bid)
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    9 คำเสนอราคา
    Versatile Web Developer Needed 10 ชั่วโมง left

    I'm seeking a skilled web developer with versatility as the requirements for my project are not completely defined yet. The type of website, its features, functionality, and platform are to be discussed and decided based on the freelancer's expertise and suggestions. Key skills and experience: - Ability to design and develop different types of websites (e.g., e-commerce, portfolio, blog) - Knowledge of different features and functionalities such as online shopping carts, user registration and login, and blogging platforms - Familiarity with various platforms or Content Management Systems (CMS) such as WordPress, Shopify, and Joomla - Exceptional problem-solving skills and creativity - Excellent communication skills for understanding requirements and proposing solutions. Your i...

    $145 (Avg Bid)
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    35 คำเสนอราคา
    Vibrant Flutter App Developer Needed 9 ชั่วโมง left

    It needs to be compatible with Android and Web i'll provide the domain hosting. Our goal is to create a colorful, vibrant, yet professional and corporate Flutter app. The website goal is to be e commerce website for a clothing brand Key Features: - editable for product updations - User Authentication - Push Notifications - Database Integration Ideal Skills for the Job: - Fluent in Flutter framework - Experience in building apps compatible with Android and Web - Past projects showcasing a tasteful selection and implementation of vibrant and professional designs. - Proven experience with user authentication, push notifications, and database integration. If you think this project aligns with your skills and expertise, do not hesitate to place your bid. Let's create a bright, profe...

    $170 (Avg Bid)
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    19 คำเสนอราคา

    I'm looking for an experienced Bubble developer to help build an application with key features. Although specific features haven't been laid out, the freelancer would need to be comfortable working with user authentication, real-time messaging, and push notifications. Ideal Skills: - Deep experience in Bubble App Development - Proven expertise with real-time messaging and user authentication - Ability to create a push notification system As details about desired aesthetics are not provided, I look for a freelancer with versatility in design ranging from modern minimalism to professional elegance. Although the project brief is still being finalized, please include your portfolio, past work, and a detailed project proposal in your application. This helps highlight your experienc...

    $150 (Avg Bid)
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    47 คำเสนอราคา

    It is basically an app that helps the sales see the account profile data that is attached. We already have the designs ready, workflow will be decided in collaboration with the freelancer. Expertise required is app development and not design

    $104 (Avg Bid)
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    24 คำเสนอราคา
    Explicit Filtering Phase -- 2 หมดเขตแล้ว left
    ยืนยันแล้ว

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

    $470 (Avg Bid)
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    Web stresser / booter source หมดเขตแล้ว left

    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)
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    10 คำเสนอราคา

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