{"id":168341,"date":"2023-05-31T14:38:11","date_gmt":"2023-05-31T13:38:11","guid":{"rendered":"https:\/\/liora.io\/en\/?p=168341"},"modified":"2026-02-06T09:02:13","modified_gmt":"2026-02-06T08:02:13","slug":"all-about-back-end","status":"publish","type":"post","link":"https:\/\/liora.io\/en\/all-about-back-end","title":{"rendered":"Back end : A complete overview on its relevance in Data Science"},"content":{"rendered":"<style><br \/>\n.elementor-heading-title{padding:0;margin:0;line-height:1}.elementor-widget-heading .elementor-heading-title[class*=elementor-size-]>a{color:inherit;font-size:inherit;line-height:inherit}.elementor-widget-heading .elementor-heading-title.elementor-size-small{font-size:15px}.elementor-widget-heading .elementor-heading-title.elementor-size-medium{font-size:19px}.elementor-widget-heading .elementor-heading-title.elementor-size-large{font-size:29px}.elementor-widget-heading .elementor-heading-title.elementor-size-xl{font-size:39px}.elementor-widget-heading .elementor-heading-title.elementor-size-xxl{font-size:59px}<\/style>\n<p><strong>The back end is essential for web development, but also for Data Science and Machine Learning. Find out all you need to know about it, and how to follow a dedicated training course.<\/strong><\/p>\nToday, we use a wide range of software applications, on PCs and mobiles, for both entertainment and business. If an application delivers a smooth, intuitive experience, it&#8217;s largely thanks to its &#8220;backend&#8221; performing all the essential tasks in the background.\n<h3>What is backend development?<\/h3>\nIn web development, activities carried out in the background of programs are referred to as back-end development.\n\nThis concept covers the logic, integration, and server-side activities of a web application. Examples include <b>writing APIs<\/b>, <b>creating libraries<\/b>, and <b>working on system components<\/b>. Conversely, <a href=\"https:\/\/liora.io\/en\/front-end-what-are-the-skills-and-tools\">front-end development<\/a> focuses on the services and programs that users will encounter.\n\nBack-end developers build the computer code that enables a database to communicate with an application. They maintain the back end of a website, including <a href=\"https:\/\/liora.io\/en\/database-what-is-it\">its databases<\/a> and servers.\n<h3>What is a back-end developer?<\/h3>\nThe back-end developer&#8217;s job focuses on writing code, scripting, and architecting a website that communicates with the site&#8217;s database and the user&#8217;s web browser. They must ensure data consistency and integrity.\n\nThis role requires a wide range of <b>technical skills<\/b>. The backend developer must be able to create code that performs relational mapping to <b>retrieve data from a database<\/b>. They understand how DBMS such as MySQL, PostgreSQL, SQL Server, <a href=\"https:\/\/liora.io\/en\/mongodb-all-about-the-document-oriented-nosql-database\">MongoDB<\/a>, and Oracle Database work.\n\nBack-end developers also master back-end <a href=\"https:\/\/liora.io\/en\/python-the-most-popular-programming-language\">programming languages such as Python<\/a>. This simple, versatile language is the most widely used and enables backend development via frameworks such as <a href=\"https:\/\/liora.io\/en\/django-all-about-the-python-web-development-framework\">Django<\/a> and Flask.\n\nJavaScript environments such as<b> NodeJS <\/b>and <b>ExpressJS<\/b> are also used. In particular, Java was designed from the outset for use on the server. Popular Java frameworks include <b>Spring<\/b> and <b>Java Server Faces<\/b>.\n\nOn Windows systems, the <b>C# language<\/b> is the recommended architecture for backend programming. Other commonly used languages include PHP, Perl, and Ruby.\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/data-engineer\">Start a career in Data Engineering<\/a><\/div><\/div>\n\n\nBackend and frontend developers are constantly working together, so it&#8217;s <b style=\"color: var( --e-global-color-text ); font-family: var( --e-global-typography-text-font-family ), Sans-serif; text-align: var(--text-align);\">useful to know the basics<\/b> of frontend technologies like HTML and CSS.\n\nIn addition, version control systems enable project-related files to be managed and progress tracked. These include Git and <a href=\"https:\/\/liora.io\/en\/github-what-is-it\">GitHub<\/a>. These tools are widely used for collaboration on Data Science projects.\n\nA back-end developer also handles Cloud solutions such as <b>Amazon Web Services<\/b> (AWS), <b>Google Cloud Platform<\/b> (GCP), or <b>Microsoft Azure<\/b>.\n\nOf course, this professional also needs non-technical skills such as problem-solving, critical thinking, communication, and a flair for analysis. They must be able to <b>work both independently<\/b> and as part of a team.\n<h3>What is the role of the back-end developer?<\/h3>\nBack-end developers have <b>many responsibilities<\/b>. To design effective solutions, they must first identify the needs and performance objectives of a website.\n\nThey are also responsible for developing and administering APIs (Application Programming Interfaces), developing <b>data storage solutions<\/b> for websites, and writing, testing, and maintaining development solutions for code-related problems.\n\nHe communicates with developers, designers, and system administrators to <b>identify new functionalities<\/b> for development. His role is also to<b> create a website architecture<\/b> using the right product lifecycle approach.\n\nThe expert organizes the system&#8217;s logic, and remedies any difficulties that may arise. They are also responsible for debugging applications.\n<h3>What are the back-end development professions?<\/h3>\nBack-end development skills are highly sought-after in companies. They give access to a wide range of positions.\n\nIn addition to the role of back-end developer, these include <b>Java developer<\/b>, <b>full-stack developer<\/b>, <b>DevOps engineer<\/b>, software engineer, and iOS developer. In addition, the back end is widely used for Data Science and <a href=\"https:\/\/liora.io\/en\/data-engineer-salary-in-canada-in-2023\">Data Engineering<\/a>.\n<h3>How much does a back-end developer earn?<\/h3>\nBack-end developers can enjoy a high salary. On average, a back-end developer in the USA earns $102,000 a year.\n\nIn Canada, <a href=\"https:\/\/ca.talent.com\/salary?job=back+end+developer#:~:text=The%20average%20back%20end%20developer%20salary%20in%20Canada%20is%20%24151%2C523,up%20to%20%24155%2C646%20per%20year.\">according to Talent.com<\/a>, the average salary for a back-end developer is $77.70 per hour. Entry level positions start around $102.000 and the most experienced go up to $155.000 per year.&nbsp;\n<h3>How do I take a back-end training course?<\/h3>\nAs you can see, <b>mastering back-end development<\/b> can open up a wide range of career opportunities. To acquire this expertise, you can turn to Liora.\n\nAll our training courses start with a module dedicated to the <b>Python programming language<\/b> and a module dedicated to <b>databases<\/b>, starting with SQL and MongoDB.\n\nWith the <a href=\"\/en\/courses\/data-ai\/data-engineer\">Data Engineer course<\/a>, a CI\/CD module also covers Git and GitHub. Other modules cover <a href=\"https:\/\/liora.io\/en\/dataviz-definition-objectives-and-uses\">DataViz<\/a>, <a href=\"https:\/\/liora.io\/en\/machine-learning-what-is-it-and-why-does-it-change-the-world\">Machine Learning<\/a>, and <a href=\"https:\/\/liora.io\/en\/introduction-to-business-intelligence\">Business Intelligence<\/a>. At the end of the course, you&#8217;ll have all the skills you need to work in Data Science or back-end development.\n\nOur innovative <b>Blended Learning approach<\/b> combines online learning on a coached platform and Masterclasses. You can choose between Continuing Education and an intensive BootCamp mode.\n\nThrough our prestigious partnerships with <b>Sorbonne University<\/b>, learners receive an industry-recognized certificate. Of our alumni, 80% find immediate employment.\n\nYou know all about the back end. For more information, see <a href=\"https:\/\/liora.io\/en\/python-the-most-popular-programming-language\">our complete file on Python<\/a> and <a href=\"https:\/\/liora.io\/en\/front-end-what-are-the-skills-and-tools\">our dossier on the front end<\/a>.\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex is-content-justification-center\"><div class=\"wp-block-button \"><a class=\"wp-block-button__link wp-element-button \" href=\"\/en\/courses\/data-ai\/data-engineer\">Become a Data Engineer with Liora<\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The back end is essential for web development, but also for Data Science and Machine Learning. Find out all you need to know about it, and how to follow a dedicated training course. Today, we use a wide range of software applications, on PCs and mobiles, for both entertainment and business. If an application delivers [&hellip;]<\/p>\n","protected":false},"author":74,"featured_media":168363,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":false,"editor_notices":[],"footnotes":""},"categories":[2434],"class_list":["post-168341","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud-dev"],"acf":[],"_links":{"self":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168341","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/comments?post=168341"}],"version-history":[{"count":1,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168341\/revisions"}],"predecessor-version":[{"id":206402,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/posts\/168341\/revisions\/206402"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media\/168363"}],"wp:attachment":[{"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/media?parent=168341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/liora.io\/en\/wp-json\/wp\/v2\/categories?post=168341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}