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.

De 135,020 opiniones, los clientes califican nuestro Backend Developers 4.87 de un total de 5 estrellas.
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    29 trabajados encontrados, precios en USD

    Hola necesito información para crear una app igual a pedidos ya. Quisiera saber de costos y tiempo.

    $2184 (Avg Bid)
    $2184 Oferta promedio
    28 ofertas

    EXPERT TEAMS OR INDIVIDUALS ONLY Current app frontend is developed in Flutter. Need a skillful team to finish the backend. App is for iOS, Android, & Web. Will need the typical features of chat (text, voice, video for 1-1 and groups), video sharing, security...etc. We need a fault tolerant, scalable backend. Choose infrastructure of your choice. Need to complete this in 3 months. Ask yourself if you have the skillsets to create a backend that would support a mini Facebook.

    $32726 (Avg Bid)
    $32726 Oferta promedio
    68 ofertas
    Dropbox decentralized 6 días left
    VERIFICADO

    Fully decentralized File immutability Competitive free plan Autonomous

    $2545 (Avg Bid)
    $2545 Oferta promedio
    41 ofertas

    I'm looking for a talented and experienced Laravel Developer to update and customize an existing virtual card script. The project includes both modifying existing scripts and developing from scratch, but we don't need any hosting services. The scope of the project requires the Developer to be proficient in all aspects of full stack development, including frontend and backend development. The ideal candidate should have prior experience working with Laravel, as well as have a solid understanding and the ability to work with HTML, AJAX, JavaScript, PHP, MySQL and Bootstrap. The project budget is $50. If you are interested in demonstrating your skills and have the confidence you can complete the project, please apply and include any relevant examples of past work. Thank you. Pay $50...

    $45 (Avg Bid)
    $45 Oferta promedio
    21 ofertas

    Saya terbiasa membuat website dan aplikasi website memggunakan codeigniter

    $18 / hr (Avg Bid)
    $18 / hr Oferta promedio
    5 ofertas
    Need python backend Enginner 5 días left
    VERIFICADO

    I am in need of a talented python backend engineer to make changes to an existing web application. I am looking for someone who has experience working with python, is familiar with relational databases, and has experience with API design and development. I need the project completed as soon as possible - so someone who is available to begin work quickly would be ideal. Understanding the requirements of the project and being able to accurately complete them in a timely manner is essential. If this sounds like something you can do, I would be delighted to have you join my team.

    $23 (Avg Bid)
    $23 Oferta promedio
    12 ofertas

    I need a professional! I need to know your qualifications, experience and rates.

    $22 / hr (Avg Bid)
    $22 / hr Oferta promedio
    33 ofertas
    Need a Full Stack Developer 4 días left
    VERIFICADO

    I need help with Health Management System Project, MERN Stack Can Pay Monthly of 30,000-40,000 INR, It has to be completed in a month. Part Time or Full Time works Only Developers Please, I don't want agencies to bid because the budget is less

    $382 (Avg Bid)
    $382 Oferta promedio
    20 ofertas
    firebase cloud funcs 3 días left
    VERIFICADO

    i'm trying to validate user's register and login, and i want someone to explain me simple steps on how to handle errors on the backend

    $45 (Avg Bid)
    $45 Oferta promedio
    14 ofertas
    Finalized an application 3 días left
    VERIFICADO

    Posted an app on IOS and android and make sure are running smoothly.

    $427 (Avg Bid)
    $427 Oferta promedio
    36 ofertas

    Building a Web application that uses chat gpt to help law school students with a certain task.

    $20 / hr (Avg Bid)
    $20 / hr Oferta promedio
    105 ofertas
    Project GitHub 2 días left
    VERIFICADO

    I'm looking for an experienced freelancer to help me create and manage a private repository on GitHub for my project. I don't currently have a project team identified, but once I do, I'll need them to have different levels of permissions, which we can discuss when the time comes. My goal is to have a secure, private repository that my project team can access, both to write and read data, so that we can collaborate on the project effectively. I'm looking forward to hearing from people who have the expertise and knowledge required to help me create this repository and manage its security.

    $34 (Avg Bid)
    $34 Oferta promedio
    18 ofertas

    We are a leading provider of VPN, web-scraping, and proxy services looking to expand our team with an experienced Full Stack Software Developer. This is a full-time, remote position with the potential for permanent employment. The ideal candidate will have a strong background in developing applications for Windows, MacOS, Android, iOS, and Chrome extensions. We are seeking a developer who can deliver high-quality frontend and backend solutions for our products. Responsibilities: Develop and maintain a range of applications for Windows, MacOS, Android, iOS, and Chrome extensions. Collaborate with cross-functional teams to define, design, and ship new features and products. Implement high-quality, visually appealing frontend interfaces that provide excellent user experiences. Develop and o...

    $21 / hr (Avg Bid)
    $21 / hr Oferta promedio
    78 ofertas

    I am looking for splunk expert for generating splunk report that will run the large data sets and modifying existing splunk queries to measure latencies and bandwidth

    $19 / hr (Avg Bid)
    $19 / hr Oferta promedio
    4 ofertas

    We require a team of experts to build a website and a native mobile app for our firm. See video attached as a introduction! You have to have a team of the following experts; Mobile Developer Backend Developer Developer operations specialist User Experience Specialists Designer Quality Assurance Specialists Project Manager

    $15496 (Avg Bid)
    $15496 Oferta promedio
    98 ofertas

    I am looking for a skilled artificial intelligence developer with experience in Python programming language to help me deploy AI on a web and mobile platform. Familiarity with the latest techniques and technologies is necessary. The project should be written in Python and be delivered as an RESTful API. The ideal candidate for this project should have in-depth understanding of AI principles, a background in developing applications with Python and have an understanding of RESTful API development. The candidate should demonstrate the ability to solve complex problems, accelerated learning capability and creative thinking. The specific tasks of the project will include: creating algorithms, training and deploying AI models, code debugging, data engineering, integration of existing solutions...

    $7 / hr (Avg Bid)
    $7 / hr Oferta promedio
    24 ofertas

    We need project management system with cloud storage & computing system for our internal purpose. It can be based on the open source code.

    $335 (Avg Bid)
    $335 Oferta promedio
    16 ofertas
    ANDROID APP AND WEBSITE. 1 día left
    VERIFICADO

    We have a finance company. What i am looking for is to get an app developed wherein a mobile retailer enters the detail of customers phone like NAME, IMEI number. Down payment and stuff and then a barcode is created. Which can be scanned by customers phone. And then customers phone is rooted and can be controlled by the company. Like when customer goes faulty , company can lock the phone and various features. The lock should be so strong that it can not be broken easily. This feature is used bh samsung finance. Sharing a link for the videos which can describe how these type of apps work

    $607 (Avg Bid)
    $607 Oferta promedio
    20 ofertas

    I am looking for a freelancer with experience in web application development utilizing AI/ML technology. The application needs to process numerical data and should be built using Python. Additionally, the freelancer should have the flexibility to consider utilizing an existing AI/ML framework, if necessary. I need a freelancer that is creative in their approach and confident in their abilities to provide the optimal level of functionality for my web application. The ideal candidate should be able to produce high quality results and provide feedback in a timely manner. Any experience with integrating AI/ML technology into web applications would be beneficial. I'm looking for someone that can help me develop an advanced web application with a focus on utilizing AI/ML technology to p...

    $2365 (Avg Bid)
    $2365 Oferta promedio
    29 ofertas

    I have website I want a freelancer for making APis for that

    $123 (Avg Bid)
    $123 Oferta promedio
    28 ofertas

    I am a ux designer and need someone to design build website from figma and Adobe XD designs. Need developer for both frontend and backend. Please don't apply if you are a firm or a company. I need independent developers with whome I can work to develop websites.

    $115 (Avg Bid)
    $115 Oferta promedio
    22 ofertas
    Email Deliverability Expert 1 día left
    VERIFICADO

    I am looking for an experienced email deliverability expert to diagnose and resolve this. Resolve and improve the open rate of our general emails, transactional emails, and marketing. Currently, our deliverability rate for emails is less than 20%, and I want to find someone who can resolve this issue. The goal of this project is to increase the open rate of our emails and to make sure that they are successful in being delivered to recipients. The ideal candidate will have extensive experience in improving email deliverability, implementing best practices for email success, and understanding email deliverability metrics. If you have the expertise to effectively improve my email deliverability, Email Deliverability Expert. We are looking for a skilled Email Deliverability Expert to...

    $20 - $167
    Sellado
    $20 - $167
    9 ofertas

    We are looking for a Senior Backend Engineer (MUST BE FROM LATAM) Ideal Candidate: // Responsibilities: ●Own domains of the Ruby on Rails backend codebase and closely collaborate with the Product and Operations teams. ●Manage software development projects from start to finish, setting timelines and goals. ●Design data models for the app architecture. ●Own the design and implementation of some of the platform’s key capabilities. // Requirements: ●Great communication skills in English & Spanish ●5 years of experience with backend systems design and development. ●3 years of experience developing APIs with Ruby. ●Strong background in Computer Science ●A clear understanding of the operational impacts of implementation decisions ●Experience designing data model...

    $2401 (Avg Bid)
    $2401 Oferta promedio
    29 ofertas
    Api backend 17 horas left

    Hi We are working on a app development project on react native. Frontend has been completed 80% , we are looking for a freelancer for backend. Are you interested to work?

    $22 (Avg Bid)
    $22 Oferta promedio
    15 ofertas

    I am looking to get a project developed end to end which fulfils everything required from - pre-sales - RFQ submission - including finding hotels, ground transportation, events, food and activities via direct contracting or via DMC routes. - quotes - closures - post sales - during the movement We would like to keep it interactive like a social media interactive platform, informative and covering other important aspects to keep a group of people from 100 to 2000 in close link. Sample website (although nowhere close to what we want as they look like build by basics and some 10 years ago) are - ;

    $1503 (Avg Bid)
    $1503 Oferta promedio
    10 ofertas
    Splunk report 15 horas left

    I need help with generating splunk report and adding the instrumentation using P90,P95 and P99 standards

    $168 (Avg Bid)
    $168 Oferta promedio
    6 ofertas

    Hi, We operate a META search project connected with BING. We are looking to hire a backend developer to join our team to integrate Bing places results into our search results similar to how Google places rank in their search results. We need to understand similar projects you have worked on. Our platform is built using: Apache 2+ (mod_rewrite) PHP 7+ (MySQLnd, OpenSSL, cURL, mbstring) MySQL 5+ We have updated our design using html / css and are in the process of building our own text ads platform similar to Google Ads to show on search results. But it is priority that we integrate the Bing places information into our search results as often people just search for a local business / café / and need the address or phone number.

    $110 (Avg Bid)
    $110 Oferta promedio
    55 ofertas
    Explicit Filtering Phase -- 2 Finalizado left
    VERIFICADO

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

    $470 (Avg Bid)
    $470 Oferta promedio
    29 ofertas

    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 promedio
    10 ofertas

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