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.

A partir das avaliações de 136,653, os clientes avaliam nosso Backend Developers 4.85 de 5 estrelas.
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    20 trabalhos encontrados, preços em EUR

    I'm in search of an experienced web developer who can design a top-notch portfolio website for my business that is modern, user-friendly, and high-performing. Key Features: - Service/Products listing: The website should have a section to showcase my services or products. It should be easy to navigate and have a clear, concise layout. - Contact form: I'd like to make it effortless for prospective clients to get in touch with me. For this, I need a streamlined contact form that collects basic information such as name, email, and message. Skills: - Web Development: You should be highly proficient in multiple web development languages, frameworks, and databases. - UI/UX Design: You should have a keen sense of aesthetics and user experience design to ensure the website is visu...

    €107 (Avg Bid)
    €107 Média
    18 ofertas

    I'm seeking a skilled PHP developer proficient in CodeIgniter for backend development and database management tasks for my School ERP project. This Project is already developed, we need to deploy it on server. I have purchased the code from Key duties include setting up and optimizing the project's backbone, managing the database and structuring the backend to efficiently handle and store data. Ideal skills: - Strong knowledge and experience in PHP development, particularly with CodeIgniter - Solid understanding of data storage strategies - Strong attention to detail with a commitment to data accuracy - Familiarity with other PHP frameworks and CMS will be an added advantage If you possess the above, do get in touch.

    €83 (Avg Bid)
    €83 Média
    28 ofertas

    Job Title: Quantitative Developer - Algo Trading Infrastructure Responsibilities: As a Quantitative Developer, you will be entrusted with the creation and enhancement of algorithms, with a strong emphasis on proficiency in Python or C++. The primary tools for this role revolve around the development of backend infrastructure for algorithmic trading, connecting strategies to broker APIs, setting up cloud-based databases for accurate backtesting, and scripting efficient data download and storage on servers. Key Tasks: Develop and refine the backend infrastructure for algorithmic trading. Connect trading strategies to broker APIs to facilitate seamless execution. Establish and maintain a cloud-based database for precise and reliable backtesting. Develop scripts for efficient data download...

    €417 - €834
    Destacado Secreto
    €417 - €834
    3 ofertas

    I'm looking for a skilled developer to create an iOS application. This app will require explicit features such as user authentication, in-app purchases, and it should be designed to facilitate both store and customer-facing interfaces. Key Responsibilities: - Develop the iOS and android application based on the design I provide. - Implement user authentication systems. - Integrate in-app purchase functionality. - Create a user-friendly interface for both customers and store management. Ideal Candidate: The ideal candidate should have significant experience in the following areas: - Proficiency in iOS and android development. - Experience with user authentication and in-app purchases. - Ability to turn design concepts into functional applications. - Strong problem-solving skills and ...

    €1295 (Avg Bid)
    €1295 Média
    112 ofertas
    Python plotly expert. -- 3 5 dias left
    VERIFICADO

    We are seeking a talented Python Developer to enhance the visual appeal of Plotly charts within our Flask application. This is an exciting opportunity to contribute to the improvement of our platform's user experience and overall aesthetics. Responsibilities: Analyze existing visual designs and identify areas for improvement to enhance aesthetics and professionalism. Develop and implement solutions to enhance the visual appeal of Plotly charts across all pages of the Flask application. Ensure compatibility and responsiveness of enhanced visualizations across various devices and screen sizes. Requirements: Proficiency in Python programming language. Strong experience with Plotly library for data visualization. Solid understanding of Flask framework. Proven track record of enhancing...

    €149 (Avg Bid)
    €149 Média
    10 ofertas
    Python plotly expert. -- 2 5 dias left
    VERIFICADO

    Python plotly expert required for charts layout enhacements. Will not take more than 5 hrs.

    €103 (Avg Bid)
    €103 Média
    10 ofertas
    Python plotly expert. 5 dias left
    VERIFICADO

    Python plotly expert required for charts layout enhacements. Will not take more than 5 hrs.

    €6 / hr (Avg Bid)
    €6 / hr Média
    11 ofertas

    I'm looking to build a vibrant, engaging anime-focused website that will not only retain its visitors but attract new ones. The website will serve as a hub for all anime lovers. Key Features: - The primary purpose is to create a dynamic platform that's not just aesthetically pleasing, but also easy to navigate and full of engaging content. - The content of the website will mainly consist of anime episodes, which will maintain the enthusiasm among the website visitors. - In addition to episodes, the site will also feature engaging news articles related to anime. These will provide insights and updates about the anime world to keep our visitor base informed. - To enhance user involvement, there will be a segment for reviews and recommendations. This will provide a platform for vis...

    €13 (Avg Bid)
    €13 Média
    14 ofertas
    Junior Developer Needed Asap 4 dias left
    VERIFICADO

    I'm looking for a Junior Developer who can jump into my project immediately. The ideal candidate should be adept with both front and back-end coding languages. - Ability to work quickly and efficiently with attention to detail - who can manage tasks on both ends of development - MERN stack experience/knowledge Looking for a responsive/active person.

    €6 / hr (Avg Bid)
    €6 / hr Média
    45 ofertas

    I need someone who has experience in: - backend development using python - ⁠able to write unit tests - ⁠AWS experience - ⁠AWS lambda and API gateway experience - ⁠Jenkins - ⁠Gitbash/ GitHub - ⁠Postman - ⁠sonarqube - SQL- AuroraPostgres

    €303 (Avg Bid)
    €303 Média
    20 ofertas

    Enry’s Island S.p.A. World’s First & Only Venture Builder listed on a Stock Exchange is seeking for a supplier to develop an innovative Web App and Mobile App that allows users to purchase products or services and suppliers to manage their orders and relationship with its customers.

    €60591 (Avg Bid)
    €60591 Média
    198 ofertas
    Enhancing OpenToClose workflow 2 dias left
    VERIFICADO

    I am looking for someone who has experience SPECIFICALLY with the software and has previously built out templates. In your application, please include: - Examples of past work with this specific system - What you worked on within the system Looking forward to transforming OpenToClose together.

    €500 (Avg Bid)
    €500 Média
    23 ofertas

    I'm looking for a tech-savvy freelancer who can help me build a comprehensive survey management system. The system's primary focus will be on real-time data processing, report generation, and user access control. Key Features: - Real-Time Data Survey: The system needs to support data surveying in real-time. Experience with live data handling and processing is highly valued. - Report Generation: It should be able to organize and present the collected information in the form of comprehensive reports, so experience in data analytics and visualization tools would be beneficial. - User Access Control: The ability to control and manage user access is also required, meaning a background in user rights management and system security is preferred. I didn't specify an industry, impl...

    €1135 (Avg Bid)
    €1135 Média
    136 ofertas

    I am looking for talented and experienced mobile app developers who can build an engaging mobile app for both iOS and Android platforms for the general public. The main purpose of my mobile app is to provide personalized food recommendations to users. Features: - Social Media Integration: Users should be able to create an account using their existing social media accounts. - Push Notifications: The app needs to send alerts and updates through push notifications to the users, ensuring they are always up-to-date with the app. - AI/ML Algorithm: The core feature of the app, it should provide personalized food recommendations depending on the user's preferences and past behaviour. - Social Networking to connect with friends: Users should be able to share their recommendations or favouri...

    €908 (Avg Bid)
    €908 Média
    51 ofertas

    A recent update has broken our submit resume function . We need to fix this

    €27 (Avg Bid)
    €27 Média
    51 ofertas

    I'm seeking a capable developer to create a network intrusion detection and prevention system that leverages deep learning. This tool should be capable of providing real-time monitoring, deep analysis, and be integrated with a user-friendly web application. The primary functionality of the system should be: - Anomaly detection: using advanced deep learning algorithms to analyze network patterns and identify any unusual activities that could signify a possible attack. For the web application's interface, the system should present: - Graphical representation: visually display detected anomalies in a clear and intuitive manner, allowing for quick interpretation of the security status. The ideal candidate should possess strong skills in deep learning, anomaly detection, network...

    €13 (Avg Bid)
    €13 Média
    3 ofertas

    Busco implementar el aprendizaje adaptativo dentro de un sistema de Inteligencia Artificial. El objetivo principal es automatizar la entrega de contenidos. Este software estará diseñado para la educación K-12 y debería facilitar experiencias de aprendizaje personalizadas dentro de los campos de Matemáticas, Ciencias e Idiomas. Esencial para el trabajo: - Experiencia con Aprendizaje Adaptativo - Conocimientos en IA y Machine Learning - Comprensión del sector educativo K-12. - Familiaridad con los contenidos educativos de Matemáticas, Ciencias y Lenguaje.

    €7136 (Avg Bid)
    €7136 Média
    16 ofertas

    We seek a seasoned Web Analytics expert to lead technical Google Analytics 4 (GA4) implementation projects across various sectors. The role involves transitioning clients to GA4, crafting measurement strategies, and integrating Google Tag Manager (GTM) for data transmission. Key responsibilities include tagging sites, conducting tag reports, and collaborating with cross-functional teams. ** Required Skills & Experience: = = = = - In-depth knowledge of GA4 standards. - 3-5+ years' experience in web analytics with GA4 expertise. - Proficiency in GTM, digital marketing, and analytics tools. - Strong communication and interpersonal skills (in English). - Hands-on experience in tag implementation & maintenance. - Ability to troubleshoot technical issues in GA4 and GTM. - Confi...

    €19 / hr (Avg Bid)
    €19 / hr Média
    25 ofertas
    Explicit Filtering Phase -- 2 Encerrado left
    VERIFICADO

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

    €433 (Avg Bid)
    €433 Média
    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)

    €162 (Avg Bid)
    €162 Média
    10 ofertas

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