{"id":20446,"date":"2019-04-24T14:10:03","date_gmt":"2019-04-24T13:10:03","guid":{"rendered":"http:\/\/codecool.com\/?p=20446"},"modified":"2022-08-17T17:16:07","modified_gmt":"2022-08-17T16:16:07","slug":"back-end-developer-co-robi","status":"publish","type":"post","link":"https:\/\/codecool.com\/pl\/back-end-developer-co-robi\/","title":{"rendered":"Back-end developer \u2013 co robi?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"20446\" class=\"elementor elementor-20446\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a4d6e72 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a4d6e72\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ebee3c3\" data-id=\"ebee3c3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-ddfa82d elementor-widget elementor-widget-text-editor\" data-id=\"ddfa82d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Back-end developer to programista, kt\u00f3ry programuje to, co w programach schowane jest \u201cz ty\u0142u\u201d, czyli odpowiada za rzeczy niewidoczne dla u\u017cytkownika. Praca Back-end developera jest \u015bci\u015ble powi\u0105zana z pisaniem kodu. Back-end developer zajmuje si\u0119 przetwarzaniem danych, tworzeniem API i bazami danych. Dowiedz si\u0119, czy to zaj\u0119cie dla ciebie!<\/strong><\/p><p>Back-end developer nie tworzy interfejsu u\u017cytkownika. Jego praca mo\u017ce wymaga\u0107 znajomo\u015bci <a href=\"https:\/\/codecool.com\/pl\/wiedza\/czym-jest-algorytmika\/\">algorytmiki<\/a>, optymalizacji oprogramowania. Co dok\u0142adnie tworzy si\u0119 w back-endzie? Wyt\u0142umaczymy to na przyk\u0142adzie bankowo\u015bci internetowej. Gdy wykonujemy przelew, w aplikacji banku musi zosta\u0107 wykonanych kilka operacji, kt\u00f3rych nie widzimy &#8211; sprawdzenie danych, weryfikacja, czy mamy odpowiedni\u0105 ilo\u015b\u0107 \u015brodk\u00f3w, sprawdzenie czy docelowe konto istnieje i w ko\u0144cu sama realizacja przelewu. To wszystko dzieje si\u0119 w back-endzie.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f1e0bb5 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1e0bb5\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8731a16\" data-id=\"8731a16\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-eaec152 elementor-widget elementor-widget-image\" data-id=\"eaec152\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"540\" height=\"540\" src=\"https:\/\/codecool.com\/wp-content\/uploads\/2021\/12\/dd-540x540-1.jpg\" class=\"attachment-large size-large wp-image-19962\" alt=\"\" srcset=\"https:\/\/codecool.com\/wp-content\/uploads\/2021\/12\/dd-540x540-1.jpg 540w, https:\/\/codecool.com\/wp-content\/uploads\/2021\/12\/dd-540x540-1-300x300.jpg 300w, https:\/\/codecool.com\/wp-content\/uploads\/2021\/12\/dd-540x540-1-150x150.jpg 150w\" sizes=\"(max-width: 540px) 100vw, 540px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7c4743d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7c4743d\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-31cfb9f\" data-id=\"31cfb9f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-fdb1a24 elementor-widget elementor-widget-heading\" data-id=\"fdb1a24\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Co musi umie\u0107 back-end developer<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4483d25 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4483d25\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-97ad73d\" data-id=\"97ad73d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f0b9b47 elementor-widget elementor-widget-text-editor\" data-id=\"f0b9b47\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Jakie j\u0119zyki programowania powinien zna\u0107 back-end developer? Back-end mo\u017cna tworzy\u0107 w wielu j\u0119zykach. Mo\u017ce to by\u0107 <strong>Java, Python, Ruby, C#, PHP a nawet JavaScript<\/strong>, poniewa\u017c nowa wersja nodeJS pozwala na pisanie JavaScriptu dla back-endu.<\/p><p><strong>Zobacz tak\u017ce:\u00a0<\/strong><a href=\"https:\/\/codecool.com\/pl\/wiedza\/najczestsze-pytania-rekrutacyjne-java-c-javascript\/\" target=\"_blank\" rel=\"noopener noreferrer\">Najcz\u0119stsze pytania rekrutacyjne Java, C i JavaScript<\/a><\/p><p>Back-end developer bardzo cz\u0119sto kontaktuje si\u0119 z <strong>bazami danych<\/strong>. Musi si\u0119 wi\u0119c orientowa\u0107 w tym, jak komunikowa\u0107 si\u0119 z bazami danych, oraz wiedzie\u0107, jak dzia\u0142a SQL i jego r\u00f3\u017cne dialekty, takie jak PostreSQL, Microsoft SQL Server, Oracle czy MySQL. Programista back-endu w swojej pracy mo\u017ce tak\u017ce natrafi\u0107 na bazy danych, kt\u00f3re s\u0105 NoSQL\u2019owe, takie jak MongoDB czy Cassandra. Dobrze wi\u0119c, by zna\u0142 wszystkie te narz\u0119dzia.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a076eba elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a076eba\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ca207a3\" data-id=\"ca207a3\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7ff88c7 elementor-widget elementor-widget-heading\" data-id=\"7ff88c7\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Predyspozycje, by zosta\u0107 back-end developerem<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-60c4a0f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"60c4a0f\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-652fbfd\" data-id=\"652fbfd\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-939cd84 elementor-widget elementor-widget-text-editor\" data-id=\"939cd84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Sk\u0105d wiedzie\u0107, kt\u00f3r\u0105 \u015bcie\u017ck\u0119 wybra\u0107? Trzeba spr\u00f3bowa\u0107 wszystkiego! Trudno by\u0142oby jednoznacznie odpowiedzie\u0107 na pytanie, <strong>czy \u0142atwiej nauczy\u0107 si\u0119 pracy w back-endzie, czy we front-endzie<\/strong><strong>.<\/strong> To kwestia bardzo indywidualna. Wszystko zale\u017cy od twoich preferencji! Front-end jest dla ludzi, kt\u00f3rzy potrzebuj\u0105 bardzo namacalnych i widocznych efekt\u00f3w swojej pracy. W Codecool wyznajemy podej\u015bcie, \u017ce front-endowiec tak\u017ce powinien by\u0107 programist\u0105. I cho\u0107 z nieco inn\u0105 specjalizacj\u0105, to jednak powinien wiedzie\u0107, jak si\u0119 programuje. Dzi\u015b nie m\u00f3wi si\u0119 ju\u017c, \u017ce programista front-end musi by\u0107 designerem. Obecnie front- end sta\u0142 si\u0119 znacznie bardziej techniczny, ni\u017c jeszcze kilka lat temu. Kiedy\u015b m\u00f3wi\u0142o si\u0119, \u017ce front-end jest prosty &#8211; \u017ce to tylko wygl\u0105d aplikacji, animacje, kwestie nie wymagaj\u0105ce umiej\u0119tno\u015bci programistycznych. Dzi\u015b jest w nim wi\u0119cej logiki, przetwarzanie danych i coraz mniejszy nacisk na estetyk\u0119. Za przyk\u0142ad mog\u0105 pos\u0142u\u017cy\u0107 tu Arkusze Google i Facebook &#8211; niesamowicie rozbudowane aplikacje, w kt\u00f3rych oczekujemy bardzo szybkiego dzia\u0142ania. Jest to zadanie w\u0142a\u015bnie dla <a href=\"https:\/\/codecool.com\/pl\/blog\/5-powodow-aby-nauczyc-sie-javascript-i-jak-zaczac\/\" target=\"_blank\" rel=\"noopener noreferrer\">front-end developer\u00f3w<\/a>.<\/p><p>Osoba zajmuj\u0105ca si\u0119 back-endem powinna by\u0107 mocno osadzona w programowaniu, musi by\u0107 w stanie pogodzi\u0107 si\u0119 z tym, \u017ce jej praca b\u0119dzie na pierwszy rzut oka niewidoczna i nienamacalna dla u\u017cytkownika. Programi\u015bci reprezentuj\u0105cy ka\u017cd\u0105 ze \u201cstron\u201d powinni orientowa\u0107 si\u0119 nie tylko w swojej dzia\u0142ce, ale tak\u017ce co dzieje si\u0119 odpowiednio w back- i front-endzie. R\u00f3wnie\u017c i kwestia zarobk\u00f3w nie jest jednoznaczna. Obecnie zdarza si\u0119, \u017ce Senior Front-End Developer mo\u017ce zarabia\u0107 wi\u0119cej, ni\u017c back-endowiec. Z pewno\u015bci\u0105 jednak back-end developer jest zawodem przysz\u0142o\u015bciowym, kt\u00f3ry nie zniknie z rynku.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-011d30e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"011d30e\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0b07320\" data-id=\"0b07320\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a8d37c1 elementor-widget elementor-widget-heading\" data-id=\"a8d37c1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Jak nauczy\u0107 si\u0119 programowania w back-end<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e604f35 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e604f35\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-9554397\" data-id=\"9554397\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b950c40 elementor-widget elementor-widget-text-editor\" data-id=\"b950c40\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>W trakcie <a href=\"https:\/\/codecool.com\/pl\/okursach\/\" target=\"_blank\" rel=\"noopener noreferrer\">kursu programowania<\/a> du\u017co czasu po\u015bwi\u0119camy na zdobycie podstawowych umiej\u0119tno\u015bci programowania i algorytmicznego, programistycznego my\u015blenia. Tematyka przeplata si\u0119, a wszystko po to, by student by\u0142 w stanie wybra\u0107, w czym b\u0119dzie czu\u0142 si\u0119 lepiej &#8211; we front-endzie czy w back-endzie. Jeste\u015bmy zdania, \u017ce trzeba zdoby\u0107 te solidne podstawy, zanim zabierzemy si\u0119 za <a href=\"https:\/\/codecool.com\/pl\/wiedza\/interfejs-java-bez-tajemnic\/\" target=\"_blank\" rel=\"noopener noreferrer\">tworzenie interfejs\u00f3w<\/a> (np. Java) i interakcji z u\u017cytkownikiem. W module webowym naszego kursu, studenci maj\u0105 za zadanie stworzenie full-stackowej aplikacji, w kt\u00f3rej musz\u0105 zaprogramowa\u0107 zar\u00f3wno back-end, jak i front-end, a w dodatku jeszcze przetestowa\u0107 aplikacj\u0119. W module Advanced studenci wybieraj\u0105 specjalizacj\u0119, w kierunku kt\u00f3rej chcieliby si\u0119 rozwija\u0107. W przysz\u0142o\u015bci, wraz ze zdobywanym w pracy do\u015bwiadczeniem zawodowym, ka\u017cdy programista back-end mo\u017ce zaj\u0105\u0107 si\u0119 rozwijaniem swoich kwalifikacji o zagadnienia front-endowe, by docelowo <a href=\"https:\/\/codecool.com\/pl\/blog\/8-opcji-kariery-programisty-full-stack-w-2022-roku\/\" target=\"_blank\" rel=\"noopener noreferrer\">pracowa\u0107 jako full-stack developer<\/a>, czyli wszechstronny, samowystarczalny programista.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-324e1ef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"324e1ef\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f96c1c9\" data-id=\"f96c1c9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a0f3091 elementor-widget elementor-widget-heading\" data-id=\"a0f3091\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Podsumowanie<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-446dc61 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"446dc61\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-80d0a3b\" data-id=\"80d0a3b\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-577b86f elementor-widget elementor-widget-text-editor\" data-id=\"577b86f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Cho\u0107 jego dzia\u0142ania cz\u0119sto nie s\u0105 widoczne go\u0142ym okiem, waga pracy Back-end developera jest nie do przecenienia. Ten programista zajmuje si\u0119 tworzeniem kodu, algorytmik\u0105 i bazami danych. Back-end developer odpowiada tak\u017ce za websecurity czyli bezpiecze\u0144stwo dost\u0119pu do danych. To przysz\u0142o\u015bciowa praca dla wszystkich programist\u00f3w, kt\u00f3rzy dobrze odnajduj\u0105 si\u0119 w tworzeniu technicznych podwalin program\u00f3w i s\u0105 w stanie odda\u0107 kwestie interfejsu w r\u0119ce programist\u00f3w front-endu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Back-end developer to programista, kt\u00f3ry programuje to, co w programach schowane jest \u201cz ty\u0142u\u201d, czyli odpowiada za rzeczy niewidoczne dla u\u017cytkownika. Praca Back-end developera jest \u015bci\u015ble powi\u0105zana z pisaniem kodu. Back-end developer zajmuje si\u0119 przetwarzaniem danych, tworzeniem API i bazami danych. Dowiedz si\u0119, czy to zaj\u0119cie dla ciebie! Back-end developer nie tworzy interfejsu u\u017cytkownika. Jego [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":19962,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[133],"tags":[],"class_list":["post-20446","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiedza"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.4 (Yoast SEO v24.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Back-end developer \u2013 co robi? - Codecool<\/title>\n<meta name=\"description\" content=\"Back-end developer to jedna z najwa\u017cniejszych r\u00f3l w IT. Odpowiada za poprawno\u015b\u0107 kodu oraz dzia\u0142anie stron internetowych. 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