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.

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    25 trabajados encontrados, precios en USD

    Notes---- pls Contact only if it is useful and you understand. Read first We are in search of a proficient Laravel/PHP developer to assist in the development of APIs for our upcoming matrimonial app. The backend infrastructure is based on Laravel, and we require the creation of several API endpoints to power core functionalities of the application. Notification API: Enable notifications for user interactions and events within the Code: Implement coupon code management for user promotions, including creation, validation, and : Develop APIs to manage user messages, including sending, receiving, deleting, and reading Active/Online: Track and display users' last active time and online Match: Calculate similarity scores between user profiles to facilitate Active User Activity: Retr...

    $112 (Avg Bid)
    $112 Oferta promedio
    38 ofertas

    I require a skilled frontend designer to work on my mobile application and dashboard backend. Key Tasks: - Designing a user-friendly and visually appealing interface for both the mobile app and dashboard backend - Wireframing to ensure the design aligns with the project's objectives - Implementing responsive design to ensure the application works well on all devices The target audience for this application is broad, including general users, business professionals, and students. Therefore, the user interface needs to be intuitive and universally appealing. The overall style and theme for the design should be modern. Prior experience working on similar projects and a strong portfolio showcasing your UI/UX design skills will be highly valued. Ideal Skills and Experience: - Proficie...

    $1260 (Avg Bid)
    $1260 Oferta promedio
    94 ofertas

    I'm looking for a skilled developer to create a one-page portfolio for me using HTML, CSS, and JavaScript. This site should have a clean and modern design. Key Requirements: 1. **One-page Design**: I want a single-page website that showcases my work, skills, and contact information. 2. **Collaboration Request Feature**: There should be an option for visitors to send collaboration requests. So the most minimal backend option to cater that is needed. (for the back-end, choose stack you're most proficient at) 3. **Responsive Design**: The site should be fully responsive and optimized for all devices. Ideal Skills and Experience: - Strong command of HTML, CSS, and JavaScript - Experience in creating one-page websites - Knowledge of creating and handling data with JavaScript - Exper...

    $31 (Avg Bid)
    $31 Oferta promedio
    26 ofertas

    I've almost completed the frontend of my heart disease prediction system and am currently looking for a skilled freelancer to provide a solid backend architecture that seamlessly integrates machine learning algorithms for heart disease prediction. Although the specific algorithm to be used has not been decided yet, possible options could include Decision Trees, Random Forests or Support Vector Machines. Ideal Skills and Experience: - Proven and demonstrated experience in building backend systems. - Proficiency in machine learning concepts and their application. Preferably, they will: - Have experience in applying machine learning to healthcare or medical-related projects. When you apply, please include: - Examples of relevant work. - Detailed proposal outlining how you intend to...

    $49 (Avg Bid)
    $49 Oferta promedio
    10 ofertas

    I require a proficient no-code machine learning marketing analytics tool that can effectively perform several critical use-cases including predictive analysis, churn prediction, customer lifetime value calculation, and market basket analysis. - Be sure to integrate with a CRM system as a critical data source. - For better understanding and interpretation of the analytical outcomes, I'd want the tool to display outputs in the form of graphical charts, categorical bar graphs, and heat maps. An ideal candidate for this project would be a developer with practical experience in building machine learning algorithms, with specific knowledge of marketing analytics. Proficiency in integrating ML tools with CRM systems will be a plus. Knowledge about data visualization techniques is also k...

    $2415 (Avg Bid)
    $2415 Oferta promedio
    44 ofertas

    I'm in need of a proficient app developer to bring my vision to life - an engaging and interactive entertainment application. The application should embody features like a point collection system and spin-the-wheel to keep users hooked. Key facets of my requirement are: - Dynamic Point System: Users should be able to gather points through the usage of the app which can be redeemed later. - Interactive Spin-the-Wheel: The app must include a spinning wheel feature acting as a reward system. - User-Friendly: The app must be intuitive and easy to navigate. I’m looking for developers who have: - Proficiency in backend and frontend development. - Experience in creating entertainment apps. - Understanding of gamification strategies. - Creativity to suggest innovative features and imp...

    $223 (Avg Bid)
    $223 Oferta promedio
    17 ofertas

    I am working on a project that consists of creating a web application with frontend and backend. This application is explained in the attached document (MASCOTMERCIO). The backend needs to be done in H2 and Springboot. The frontend in Html/java/ is the link to github of my project -> I have created the bbdd, repositories, entities, and the frontend in a very simple way. We need to have it done by Friday/Saturday, in the morning.

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

    I'm leading the development of a cutting-edge video streaming app using Flutter. Our aim is to provide users with a seamless entertainment experience, offering a wide range of content including novels, series, and movies. Key Responsibilities: As the Backend Developer for this project you will: 1. Design and develop scalable server-side applications. 2. Implement robust APIs for seamless communication with the Flutter client. 3. Integrate third-party services to enhance platform features. 4. Manage data storage solutions and optimize database performance. 5. Ensure server-side code is optimized for performance and reliability. 6. Implement security measures to protect user data. Requirements: To excel in this role, you should: 1. Have proven backend development exp...

    $1150 (Avg Bid)
    Acuerdo de Confidencialidad
    $1150 Oferta promedio
    103 ofertas

    I'm seeking a talented Django/React developer to assist with both front-end and back-end development of my web application for a week. Aside from the code writing, we'll also be doing a substantial amount of testing, idea sharing and brainstorming in a fun, team enviroment. If your an introvert whom just wants a task list - this will not suit, if you wish to spend a week having fun and blowing up a codebase till its happy - this is more for you. The project involves: - Front-end development - Back-end development - Deployment assistance - General development work Skills and experience needed: - Proficient in Django and React.js framework - Familiarity with testing and deployment processes - Strong problem-solving skills and ability to brainstorm creative solutions ...

    $1258 (Avg Bid)
    $1258 Oferta promedio
    78 ofertas

    I have VPS server and on it I have about 120 cpanles under WHM and each Cpanel is a URL / Domain website. All URLs Domains has exact same website php files structure and same design. When I update one website (change in php files) I want to apply this update to all rest of websites in my sever. I want someone to find me solution or tool / feature to update all the 120 website files at once instead of doing it individually and manually. For example, If I update all 120 cpanel individually and manually then it will take me days to do it, therefore I want someone to find me solution to update all the 120 website files at once (maybe upload php files to certain folders in server to all cpanels ) Please explain your solution and what method will you follow.

    $147 (Avg Bid)
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    71 ofertas
    NodeJs and Firebase expert 4 días left
    VERIFICADO

    I am seeking a mobile app developer to help me upload my code on my google app engine. I am unable to update or edit certain code segments. Need some to fix this for me asap. The code is already deployed there just need help in updating and editing it. I will provide the code.

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

    Description: We are seeking a development team to create two credits platform with an elegant, dynamic, and user-friendly frontend, along with a comprehensive backend to manage requests, simulations, and administrative processes. - 2 Frontends - 1 backend will be used for the two websites If your team is ready to take on this challenge and develop a complete and functional platform, we would be delighted to discuss the details and collaborate on this exciting project.

    $2261 (Avg Bid)
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    181 ofertas

    I'm in need of a comprehensive flight booking website and a mobile application. The target audience for this project is both business and vacation travelers. The application needs to be user-friendly, reliable and easy to navigate. Key Features: - Flight Search and Booking: The platform should allow users to search for flights from a variety of airlines and book them seamlessly. - Payment Gateway Integration: A secure payment gateway needs to be incorporated into the platform, allowing customers to pay for their bookings without any complications. - User Reviews and Ratings: I'd like a feature that enables users to give feedback and rate their experience with the website and application. The ideal candidate should have experience in developing similar platforms, with a strong...

    $12 / hr (Avg Bid)
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    14 ofertas

    I'm in immediate need of an experienced Flutter developer to implement user authentication in my mobile application in flutter . This project involves integrating IOTA Digital Identity management with a Matrix homeserver to authenticate logins and signups in a Flutter application, enhancing security and decentralization. The initiative will require the development of an API to connect the Matrix server with IOTA, customization of the Matrix authentication provider to use this API, and updates to the Flutter application to support this new authentication mechanism. I have the application, matrix home server ser up and IOTA also in stalled (Mybudgert is no more than 25 euros so please dont bargain and waste both of out time)

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

    I'm in immediate need of an experienced Flutter developer to implement user authentication in my mobile application in flutter . This project involves integrating IOTA Digital Identity management with a Matrix homeserver to authenticate logins and signups in a Flutter application, enhancing security and decentralization. The initiative will require the development of an API to connect the Matrix server with IOTA, customization of the Matrix authentication provider to use this API, and updates to the Flutter application to support this new authentication mechanism. I have the application, matrix home server ser up and IOTA also in stalled (Mybudgert is no more than 25 euros so please dont bargain and waste both of out time)

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

    I'm seeking a talented Full-Stack Developer who can assist with the development of a web application. This web app requires a mix of backend and frontend work. Key Tasks: - Backend Development: You'll be responsible for developing the backend of the web application using and MongoDB. - Database Integration: You'll need to seamlessly integrate the MongoDB database with the frontend and ensure data is stored and retrieved accurately. - API Creation: You'll be creating APIs to facilitate data transfer between the frontend and backend. - What to build: An admin panel for the billiard game. I already have a admin theme, all you have to do is modify the theme according to the requirement Primary Goal: - The main aim of this project is to build an efficient, user-friendly ...

    $307 (Avg Bid)
    $307 Oferta promedio
    31 ofertas
    Wordpress Finalization 2 días left
    VERIFICADO

    * Set up link personalization so that by clicking on a link sent from the site, the page opens only to the user to whom it was sent. If clicking on the link will enter the login information of another user, in this case it should not proceed. Configure the correct redirect to the necessary sites * insert a link to a document for download on one of the site pages (this document has already been generated and there is a download link on another page of the site) * Add generation of an invoice for using the site in pdf form (the form will be provided) with saving on the pages in the admin panel and on the user page. * Edit the account pages created in the admin panel, add a filter by user, month, account status and account number (these fields have been created, you just need to display th...

    $91 (Avg Bid)
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    31 ofertas

    I'm seeking a highly skilled professional to develop an Android app focused on warehouse stock tracking. Here’s the overview of the core functionality the app should have: - **Stock Level Updates**: The app should encompass a real-time updated inventory that reflects the current stock levels. I'm interested in exploring the possibility of updates via manual input and barcode scanning. Ideal candidate should have: - Strong experience in Android app development - Knowledge in inventory management or similar apps - Familiarity with using barcode scanning for inventory tracking(Barcode scanning could be a future option, not interested to have it in the early version, could be integrated at later stages off the app) A successful collaboration could lead to more work in the f...

    $2421 (Avg Bid)
    $2421 Oferta promedio
    95 ofertas

    Pretendo abrir uma loja de cosmetico e adquiri um template no bubble e pretendo algumas mudanças de layout principalmente na pagina principal e na de pesquisa, Este é o template que comprei que pretendo algumas mudanças, Algumas funções pretendidas 1) A foto na pagina principal tem que ser dinamica e clicavel para encaminhar o cliente, 2) Sendo uma pagina que venderá cosmeticos preciso que além de categoria tenha subcategoria e uma outra camada preciso de 3 de niveis para cada produto. 3) Preciso de um chat no site conectado com o whatsapp e com as redes socias 4) Na pagina de pesquisa de produto tem que ter outros filtros, 5) Configuração de pagamento via API

    $184 (Avg Bid)
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    16 ofertas

    I'm seeking a proficient web developer to assist in bringing my vision to life: a custom web app booking platform tailored for the beauty and wellness industry. This platform will serve as a marketplace, connecting customers with businesses in the said sector. Key Features Required: - **Appointment Booking**: Users should be able to book appointments easily through the platform. - **Service Reviews and Ratings**: A robust review and rating system are essential to foster trust. - **Online Payment Integration**: Seamless integration of online payment system will be necessary for user convenience. - **Chatbots**: Integrating chatbots will enhance user experience, providing instant and automated responses. - **Map Integration**: Including map functionality will help users locate ...

    $3067 (Avg Bid)
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    144 ofertas

    I'm looking for a skilled developer to build an exam proctoring website with additional features such as live video monitoring, automated cheating detection, and secure browser lockdown. While these are the primary functions, a few more features will only be disclosed to the successful freelancer. Key requirements for this project are: - A clear understanding of my brief - Ability to develop a secure site with video monitoring capabilities. - Skill in creating automated systems for cheating detection - Expertise in browser lockdown features to ensure exam integrity. Successful freelancers must present detailed project proposals for consideration. I will provide all content and graphics for the website. Therefore, a keen eye for detail with a commitment to incorporate provided ma...

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

    I'm currently seeking a skilled PHP Developer to revamp the landing page for my matrimonial website. Here is a snapshot of the key tasks involved: *Implement New Features* You'll be tasked with incorporating a new user registration feature and advanced search filters. *Designing Key Visual Elements* The revised landing page should contain a redesigned header complete with our logo and menu, an engaging banner or image slider, and a dedicated testimonial section. *Appearance and Branding* The intended design aesthetic for the new landing page is modern and minimalist. I'm after a clean look that signifies simplicity while carrying an air of sophistication. For this task, an ideal freelancer would have: - Proven PHP development skills, preferably with past experience in we...

    $112 (Avg Bid)
    $112 Oferta promedio
    31 ofertas

    I'm in need of a developer to create a paid online store for me. The store would be used to sell digital products. I want to link APIs to the store in order to facilitate certain functionalities: - Product Catalog: The store needs to have a clear, user-friendly product catalog where visitors can browse and view the items available for sale. - Shopping Cart: I'm looking for a basic shopping cart system that allows users to add products to their cart and proceed to checkout. - Payment Gateway: The store must integrate with a reliable payment gateway to process transactions securely and promptly. Digital Product Delivery I envision a straightforward process for handling digital product delivery. After a successful payment has been made, the digital product should be automatically a...

    $301 (Avg Bid)
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    35 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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