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 128,894 reviews, clients rate our Backend Developers 4.85 out of 5 stars.
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    17 jobs found, pricing in USD

    Do NOT use Ai or copy paste … instantly won’t get selected Show me previous works with iot developed Examples of links of backend And apps if you do both Why you should be selected for this project What architecture you will use to scale it

    $2300 (Avg Bid)
    $2300 Avg Bid
    15 bids

    We are looking for a skilled team with expertise in both Node.js for backend development and Windows-based application development for our integrated biller services API project. The robust backend will be built using Node.js and will run on Kubernetes, managing various modules like API Gateway, Data Transformation, and more. The Kiosk application, running on Windows 10, will interact with the backend to provide biller services. A strong background in secure API connections, real-time updates, and system monitoring is essential. Detailed project plans and specifications will be shared with the shortlisted candidates. Please write green at the beginning of your proposal if you read this and you can work on both platforms/coding languages. Proposals without it will be ignored

    $15288 (Avg Bid)
    $15288 Avg Bid
    90 bids

    Need a developer who works on flutter. Will need to develop a basic mobile application, initial only for Android and IOS, without web page. Application will be used for sending parcels in certain regions. Application main functions: User registration User profile Internal chat Search system Flight details Parcel details Notifications Profile photo Date of registration Account verification

    $8 - $15 / hr
    Sealed
    $8 - $15 / hr
    141 bids

    I am looking for a Backend developer for an entrepreneurial project. We are developing an IoT system (similar to an Alarm system but without the "cameras" section) with connections via HTTP, MQTT, Websockets and Wifi. It must be connected to the microcontroller (ESP32) of the device as well as to the user's mobile App. Please indicate budget, agenda availability and estimated time for its development. Is required: Immediate availability to start Agenda availability for the coming weeks Offered: Meetings to clarify any point. Seriousness, real project, future references, etc. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------...

    $1098 (Avg Bid)
    $1098 Avg Bid
    29 bids

    We have our own server, mobile app and smart locks. We need integration of Alexa, Homekit and etc. We look for an experienced engineer to integrate these and some other wellknown tools to our ecosystem. You are the one we look for if you already made any integration of any product to work with Alexa or another home kit

    $631 (Avg Bid)
    $631 Avg Bid
    22 bids

    Hello, I am looking for somebody who's experienced in managing & developing software or web apps. Specifically : I need someone with expertise in integrating ChatGPT to automate the process of creating full-length books. * About our current Web App: - Audience: The platform targets Arabic users. Therefore, most books requested for creation might be written in Arabic by ChatGPT. - Functionality: A user visits the website, inputs details in a form about the book they want to create (ex: title, description, tone, is it a story or an informative book, and many other details), and upon selection of the desired number of chapters, they can proceed to purchase. Once payment is made, the book is automatically generated based on the user's provided details using ChatGPT, and then...

    $269 (Avg Bid)
    $269 Avg Bid
    21 bids

    Software Mail cow (Dockerized or bare metal installation) DNS server SSH client Web browser (if using webmail) DKIM signing tool (such as opendkim) SPF record generator (such as spfquery Requirements:- Setup Mail Exchange Service SMTP Setup IMAP/POP3 Setup Spam and Antivirus Guidelines Auto Updatation SSH configuration for Mail Server access Configuring DNS Records If require Webmail, then setting Webmail Configuration option for local access SSL/TLS Implementation for Security measures Setting up Domain keys Identified Mail Implementing Sender Policy Framework as a must security measure Multiple emails access Administration email Server should work with any programming language through requests or APIs Things provided by us:- Linux VM and needed resources + all m...

    $26 (Avg Bid)
    $26 Avg Bid
    12 bids

    I need to create the database and the backend of this template in React Native.

    $282 (Avg Bid)
    $282 Avg Bid
    56 bids

    Nexton is looking for a Senior Back-end Engineer. “Connect remote technical team members in LATAM with the best global opportunities”. ? Compensation: USD6K - 9K/month.  100% remote.  PTO Policy - Contract Specific (12.5 work-days).  Holiday Policy - Local (8-10 days).  Equipment - Laptop and Charger  Career Growth - 1-1s (Weekly or Biweekly). ? Location: Remote (for Mexico and Colombia residents). ? Skills: AWS, Debugging, Ruby on Rails, SQL; Expert in 5 years of experience in Back-end development. English and Spanish conversational. Apply here: ⭐ Responsibilities:  Collaborate with client-side developers in web and mobile development to design new product features and concepts.  Develop RESTful JSON APIs that will be used by client-side teams to serve their a...

    $7544 (Avg Bid)
    $7544 Avg Bid
    22 bids

    Need to produce PDF or Excel files or other formats with a search function, does not support copying, does not support editing, does not support the conversion into other formats, does not support screenshots, does not support printing, there is a background image (background image can not be removed)

    $129 (Avg Bid)
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    12 bids
    Primetv services 2 days left

    I want to create an panel for IPTV services ill explain in detail when we connect!

    $1400 (Avg Bid)
    $1400 Avg Bid
    8 bids
    Need of Chinese Developers 1 day left
    VERIFIED

    I am in need of Chinese developers who are proficient in both front-end and back-end development. The ideal candidate should have a strong proficiency in Java programming language. Skills and Experience: - Proficiency in Java programming language - Experience in both front-end and back-end development - Strong problem-solving skills - Ability to work collaboratively in a team environment - Fluency in Chinese language is preferred, but not mandatory Project Details: - The project involves a long-term partnership, where the developer will be working on various projects over time. - The developer will be responsible for both front-end and back-end development tasks. - The projects may vary in complexity and scope, providing the opportunity to work on different types of projects. - The deve...

    $7 / hr (Avg Bid)
    $7 / hr Avg Bid
    16 bids

    Project Description: We are looking for an experienced developer to create a feature-rich chat application that supports real-time messaging and location-based user grouping. This project aims to deliver a robust and user-friendly chat platform with the following key features: Core Features: User Registration and Authentication: Implement secure user registration and login mechanisms to ensure user privacy and data protection. Real-Time Chat: Develop a real-time chat system using WebSocket technology to enable instant messaging between users. Messages should be delivered promptly and efficiently. Location-Based Grouping: Group users based on their geographical location using GPS or IP geolocation. This feature should allow users to join chat groups with others in their vicinity. User...

    $12 / hr (Avg Bid)
    $12 / hr Avg Bid
    27 bids

    *** Sabre API experience is required *** Our company would like someone to help us create a connection between our current app and a Sabre System. We have determined that the connection should be done via API. Fortunately, we do have existing API documents and software tools that we can provide in order to facilitate the job. With regards to timeline, we are open to discussion. The right candidate for this project should have experience in Sabre integration along with advanced knowledge of API development. Must have skill in integrating different systems and possess solid technical writing experience for documentation. We only need to connect the Fligths API to query the info needed Our main problem is the connection, will be helpful if we make some zoom sessions for you to walk us th...

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    65 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
    Site com integração web3 4 days left
    VERIFIED

    Presiso de um site com integração web3. E do contrato inteligente que irá interagir com o site . Será implantado na blockhain da rede polygon.

    $458 (Avg Bid)
    $458 Avg Bid
    18 bids

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