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Devenir Data Engineer ? Tendances, comp\u00e9tences, missions, besoins, formations, salaire pour une carri\u00e8re de Data Engineer","_yoast_wpseo_title":"Data Engineer - Fiche M\u00e9tier - Missions, Comp\u00e9tences, Formations et Salaire | Le Wagon","contenu_de_larticle":"<div class=\"row\">\r\n<div class=\"col-12 col-lg-8 container-content\">\r\n<h2>Qu\u2019est-ce que le Data Engineering ?<\/h2>\r\nL\u2019explosion du volume de donn\u00e9es (big data) a incit\u00e9 les entreprises \u00e0 recruter des \u00e9quipes sp\u00e9cialis\u00e9es dans le traitement et l\u2019analyse de la big data.\r\n\r\nEn effet, les donn\u00e9es sont une \"mati\u00e8re premi\u00e8re\". Mais, pour qu'une entreprise puisse les exploiter dans la prise de d\u00e9cision ou \u00e0 des fins op\u00e9rationnelles, il faut \u00eatre capable de les traduire en informations utiles.\r\n\r\nLe Data Scientist analyse les donn\u00e9es en profondeur, construit des mod\u00e8les pr\u00e9dictifs et communique ses r\u00e9sultats aupr\u00e8s des parties prenantes de l\u2019entreprise. La donn\u00e9e devient ainsi un instrument contextualis\u00e9 au service de la prise de d\u00e9cision.\r\n\r\nMais avant de rendre la donn\u00e9e intelligible, il faut commencer par la rendre <strong>exploitable<\/strong> : c'est l\u00e0 qu'intervient le Data Engineering. Cet ing\u00e9nieur intervient donc en amont des services du Data Scientist, pour construire les fondations indispensables \u00e0 une analyse intelligente de la donn\u00e9e.\r\n\r\nLe r\u00f4le du Data Engineer au sein d'une entreprise est de concevoir des plateformes (entrep\u00f4ts de donn\u00e9es) pour <strong>faciliter le\u00a0 traitement de volumes de donn\u00e9es importants<\/strong>. Il s\u2019assure que les pipelines de donn\u00e9es soient suffisamment clairs et s\u00e9curis\u00e9s pour que les data analysts et les Data Scientists puissent les analyser dans les meilleures conditions.\r\n\r\nDans le cycle de la donn\u00e9e, le Data Engineering couvre les deux premi\u00e8res \u00e9tapes : <strong>collecte et stockage<\/strong>. Les Data Scientists prennent ensuite le relais pour analyser la data et la traduire en recommandations business pour leur entreprise. Une fois les mod\u00e8les entra\u00een\u00e9s, le Data Engineer intervient \u00e0 nouveau pour les remettre en production. \u00c0 ce stade, son r\u00f4le consiste \u00e0 s\u2019assurer que le data product fonctionne correctement en back-end.\r\n<h2>Les missions du Data Engineer<\/h2>\r\nLa mission principale du Data Engineer consiste \u00e0 concevoir des outils et des solutions permettant le traitement de larges jeux de donn\u00e9es.\r\n\r\nPour que les Data Scientists puissent faire leur travail dans de bonnes conditions, les Data Engineers se chargent de concevoir et de construire des syst\u00e8mes appel\u00e9s <strong>data warehouses<\/strong> (entrep\u00f4ts de donn\u00e9es).\r\n\r\nLe but de ces entrep\u00f4ts est de <strong>recueillir de gros volumes de donn\u00e9es<\/strong> issues de diff\u00e9rentes sources et de les rendre exploitables pour les analystes.\r\n\r\nConcr\u00e8tement, le fonctionnement du data warehouse est bas\u00e9 sur le <strong>processus ETL<\/strong> (Extract, Transform, Load). C\u2019est ainsi que la plupart des pipelines de donn\u00e9es sont construits et structur\u00e9s. La donn\u00e9e est d\u2019abord extraite des diff\u00e9rentes applications. Ensuite, la donn\u00e9e brute est transform\u00e9e en donn\u00e9e exploitable pour l\u2019analyse. Enfin, elle est charg\u00e9e en vue de son utilisation future.\r\n\r\nEn r\u00e9sum\u00e9, le travail du Data Engineer consiste \u00e0 maintenir les ensembles de donn\u00e9es actualis\u00e9s, document\u00e9s et de la meilleure qualit\u00e9 possible.\r\n<h2>Data Engineer VS Data Scientist<\/h2>\r\nCes deux m\u00e9tiers sont compl\u00e9mentaires et interviennent \u00e0 deux moments diff\u00e9rents sur la cha\u00eene du <strong>big data<\/strong>.\r\n\r\nLe ou la <a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-data-scientist\">Data Scientist<\/a> analyse et exploite les donn\u00e9es pour en tirer des enseignements utiles \u00e0 la prise de d\u00e9cision.\u00a0 Il est la courroie de transmission entre la data et ses implications business pour l\u2019infrastructure pour laquelle il travaille.\r\n\r\nLe ou la Data Engineer a davantage un profil de <strong>technicien des donn\u00e9es<\/strong>. Son m\u00e9tier consiste \u00e0 agir en amont pour pr\u00e9parer le terrain. Il d\u00e9veloppe, teste, construit et maintient les architectures data. Son objectif est d\u2019<strong>am\u00e9liorer la fiabilit\u00e9, l\u2019efficience et la qualit\u00e9 des donn\u00e9es<\/strong>.\r\n\r\nPar exemple, dans le cadre d\u2019un produit de pr\u00e9vision m\u00e9t\u00e9o, le Data Engineer s\u2019assure du bon fonctionnement du data product. En revanche, il n\u2019est pas responsable de la pr\u00e9cision de la pr\u00e9diction. C\u2019est le r\u00f4le du Data Scientist. Il n\u2019intervient pas non plus dans l\u2019analyse des pr\u00e9dictions, qui est l\u2019apanage du data analyst.\r\n<h2>\r\nLes comp\u00e9tences du Data Engineer<\/h2>\r\nLe m\u00e9tier de Data Engineer (ou ing\u00e9nieur de donn\u00e9es) exige un socle de comp\u00e9tences assez large :\r\n<ul>\r\n \t<li>\u00catre capable de cr\u00e9er des pipelines de donn\u00e9es fiables<\/li>\r\n \t<li>Ma\u00eetriser parfaitement SQL, le langage des bases de donn\u00e9es<\/li>\r\n \t<li>Combiner les sources de donn\u00e9es<\/li>\r\n \t<li>Conna\u00eetre les techniques de mod\u00e9lisation des donn\u00e9es<\/li>\r\n \t<li>Avoir une solide compr\u00e9hension de l\u2019ETL<\/li>\r\n \t<li>Disposer de solides comp\u00e9tences en d\u00e9veloppement informatique et savoir coder proprement<\/li>\r\n \t<li>Ma\u00eetriser les outils du big data comme Hadoop<\/li>\r\n<\/ul>\r\nPar ailleurs, le r\u00f4le de l\u2019ing\u00e9nieur des donn\u00e9es r\u00e9clame aussi des soft skills, notamment la capacit\u00e9 \u00e0 <strong>travailler en \u00e9quipe<\/strong>. En effet, il est souvent le premier maillon d\u2019une \u00e9quipe data compos\u00e9e aussi de data analysts et de Data Scientists.\r\n<h2>\r\nM\u00e9tiers de la Data : Pourquoi devenir Data Engineer ?<\/h2>\r\n<ul>\r\n \t<li><strong>Un m\u00e9tier pris\u00e9 :<\/strong> Les m\u00e9tiers de la data ont le vent en poupe. La demande est donc tr\u00e8s forte dans de nombreux secteurs, non seulement dans les startups mais aussi dans les entreprises plus conventionnelles. En outre, les entreprises commencent \u00e0 comprendre qu\u2019il est compliqu\u00e9 de trouver un profil unique pour g\u00e9rer toute la cha\u00eene de la donn\u00e9e. Elles cr\u00e9ent donc, quand c\u2019est possible, une \u00e9quipe data compos\u00e9e de Data Engineers, de data analysts et de Data Scientists.<\/li>\r\n \t<li><strong>Une r\u00e9mun\u00e9ration attractive :<\/strong> Selon l'\u00e9tude du site <a href=\"https:\/\/datarecrutement.fr\/etude-salaire\/\" target=\"_blank\" rel=\"nofollow noopener\">Data Recrutement<\/a>, le salaire moyen d'un Data Engineer Junior en \u00cele-de-France est d'environ 44k annuels. Cette r\u00e9mun\u00e9ration peut bien s\u00fbr varier si vous exercez ce m\u00e9tier dans une autre r\u00e9gion fran\u00e7aise ou \u00e0 l'\u00e9tranger, ou si vous \u00eates amen\u00e9 \u00e0 manager une \u00e9quipe.<\/li>\r\n \t<li><strong>L\u2019\u00e9volution de carri\u00e8re du Data Engineer :<\/strong> Le Data Engineer se situe au d\u00e9but de la cha\u00eene de la donn\u00e9e. Il est envisageable par la suite d\u2019\u00e9voluer vers une fonction de Data Scientist. En effet, les deux m\u00e9tiers reposent sur un socle de connaissance commun, mais les services du Data Scientist interviennent \u00e0 un stade plus avanc\u00e9 du traitement de la data.<\/li>\r\n<\/ul>\r\n<h2>\r\nNotre support pour se former au m\u00e9tier de Data Engineer<\/h2>\r\nLa <a href=\"https:\/\/www.lewagon.com\/fr\/data-science-course\">formation Data Science<\/a> propos\u00e9e par Le Wagon permet d'acqu\u00e9rir les comp\u00e9tences cl\u00e9s pour exercer le m\u00e9tier d'Ing\u00e9nieur Data.\r\n\r\nDisponible en 9 semaines \u00e0 temps plein ou en 24 semaines \u00e0 temps partiel, ce bootcamp vous permettra d'apprendre tous les fondamentaux de la Data Science (de l\u2019analyse des donn\u00e9es au Data Engineering, en passant par le Machine Learning), mais aussi de d\u00e9velopper votre r\u00e9seau gr\u00e2ce aux projets d'\u00e9quipe et aux \u00e9v\u00e9nements organis\u00e9s par nos campus. Combin\u00e9e \u00e0 une pr\u00e9c\u00e9dente exp\u00e9rience en D\u00e9veloppement Web et \u00e0 quelques mois d'entra\u00eenement, cette formation vous permettra de r\u00e9ussir en tant que Data Engineer.\r\n\r\nPr\u00eat(e) \u00e0 rejoindre notre cercle de Data Engineers ? T\u00e9l\u00e9chargez le syllabus de notre <strong>formation Data Science<\/strong> ci-dessous pour d\u00e9couvrir le programme en d\u00e9tails et en savoir plus sur nos alumni et notre communaut\u00e9 !\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"col-12 col-md-6\">\r\n<h3 class=\"fs-20 mb-24 fw-bold\">Toutes les carri\u00e8res en Data<\/h3>\r\n<ul class=\"list-unstyled\">\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-developpeur-data-ia\/\"><span style=\"font-weight: 400;\">D\u00e9veloppeur IA<\/span><\/a><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-machine-learning-engineer\/\"><span style=\"font-weight: 400;\">Ing\u00e9nieur Machine Learning<\/span><\/a><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-product-owner-data\/\"><span style=\"font-weight: 400;\">Data Product Owner<\/span><\/a><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-data-scientist\/\"><span style=\"font-weight: 400;\">Data Scientist<\/span><\/a><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/blog.lewagon.com\/fr\/career\/metiers-tech-data-science-data-analyst\/\"><span style=\"font-weight: 400;\">Data Analyst<\/span><\/a><\/li>\r\n<\/ul>\r\n<\/div>","_contenu_de_larticle":"field_6412588b55814","titre_de_la_banniere":"","_titre_de_la_banniere":"field_6422eb732c237","paragraphe_de_la_banniere":"","_paragraphe_de_la_banniere":"field_6422ed834a968","intitule_du_bouton_de_la_banniere":"","_intitule_du_bouton_de_la_banniere":"field_6422ed934a969","lien_du_bouton_de_la_banniere":"","_lien_du_bouton_de_la_banniere":"field_6422eda54a96a","yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Data Engineer - Fiche M\u00e9tier - Missions, Comp\u00e9tences, Formations et Salaire | Le Wagon<\/title>\n<meta name=\"description\" content=\"Comment Devenir Data Engineer ? 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