{"id":8893,"date":"2026-10-12T17:50:54","date_gmt":"2026-10-12T15:50:54","guid":{"rendered":"https:\/\/itds.pl\/it-jobs\/mid-senior-net-developer-web-applications\/"},"modified":"2026-10-12T17:57:34","modified_gmt":"2026-10-12T15:57:34","slug":"8893","status":"publish","type":"matador-job-listings","link":"https:\/\/itds.pl\/pl\/praca\/8893\/","title":{"rendered":""},"content":{"rendered":"<h3><strong>Empower fintech innovation \u2014 build secure, high-performance mobile banking solutions!<\/strong><\/h3> <p>Warsaw-based opportunity with hybrid work model (2 days in the office per month).<\/p> <p>As a <strong>Senior .NET Developer<\/strong>, you will be working for our client, a leader in the online banking sector committed to delivering modern, secure, and user-friendly mobile applications to a broad customer base. Join this dynamic environment to drive the development of cutting-edge fintech solutions that redefine digital banking experiences, fostering innovation and professional growth.<\/p> <h3><strong>Your main responsibilities:<\/strong><\/h3> <ul> <li>Develop and maintain scalable web applications using the .NET framework.<\/li> <li>Collaborate with cross-functional teams to design, implement, and optimize new features.<\/li> <li>Integrate backend services with frontend components to ensure seamless functionality.<\/li> <li>Apply best practices in coding, testing, and documentation to ensure high-quality deliverables.<\/li> <li>Support continuous integration and deployment processes, automating workflows to enhance efficiency.<\/li> <li>Participate in code reviews and uphold coding standards across the team.<\/li> <li>Contribute to innovation by suggesting improvements and optimizing existing applications.<\/li> <li>Keep abreast of emerging technologies and industry trends to recommend innovative solutions.<\/li> <\/ul> <h3><strong>You&#8217;re ideal for this role if you have:<\/strong><\/h3> <ul> <li>At least 5&nbsp;years of professional experience in software development, with a focus on web applications.<\/li> <li>Strong knowledge of .NET (Core\/Framework) and related technologies.<\/li> <li>Experience working with C#, ASP.NET, and Visual Studio.<\/li> <li>Familiarity with front-end frameworks and integration techniques.<\/li> <li>Understanding of RESTful APIs, JSON, and web services.<\/li> <li>Experience with version control systems such as Git, Bitbucket, or GitHub.<\/li> <li>Knowledge of software design principles and best practices.<\/li> <li>Ability to work effectively in a hybrid model and communicate fluently in Polish.<\/li> <\/ul> <h3><strong>It is a strong plus if you have:<\/strong><\/h3> <ul> <li>Experience with frontend frameworks (Angular, React).<\/li> <li>Knowledge of cloud services like Azure or AWS.<\/li> <li>Certifications in software development or related fields.<\/li> <\/ul> <p><strong>Language Required for the role:<\/strong><\/p> <ul> <li>Polish: C2<\/li> <\/ul> <p><strong>Eligibility for the role:<\/strong><\/p> <ul> <li>Only candidates with an existing legal right to work in the European Union will be considered for this role.<\/li> <\/ul> <p><strong>#MAKEYourCareerBETTER<\/strong><\/p> <p>Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.<\/p> <nav class=\"matador-job-navigation\"> <ul> <li> <a href=\"https:\/\/itds.pl\/pl\/?wpid=8893&amp;bhid=10156\" rel=\"button\" class=\"matador-button\" title=\"Apply Now\">Apply Now<\/a> <\/li> <li> <a href=\"https:\/\/itds.pl\/pl\/praca\/8893\/\" rel=\"button\" class=\"matador-button matador-button-secondary\" title=\"More Info\">More Info<\/a> <\/li> <\/ul> <\/nav> ","protected":false},"excerpt":{"rendered":"<p>Empower fintech innovation \u2014 build secure, high-performance mobile banking solutions! Warsaw-based opportunity with hybrid work model (2 days in the office per month). As a Senior .NET Developer, you will be working for our client, a leader in the online banking sector committed to delivering modern, secure, and user-friendly mobile applications to a broad customer &hellip; <a href=\"https:\/\/itds.pl\/pl\/praca\/8893\/\">Continued<\/a><\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_matador_source_id":"10156"},"matador-categories":[],"matador-locations":[29],"matador-types":[25],"matador-remote-job-possible":[181],"matador-skills":[183],"matador-seniority":[177],"matador-position":[174,176],"matador-technology":[720,730,760,808,878,951,1092,1186,1487,1868,2042],"matador-contract-type":[402,431],"matador-priority":[286],"matador-language":[178],"matador-place":[437],"matador-visibility":[704],"matador-choose-website-to-publis":[449],"class_list":["post-8893","matador-job-listings","type-matador-job-listings","status-publish","hentry","matador-locations-warsaw","matador-types-contract","matador-remote-job-possible-hybrid","matador-skills-developer","matador-seniority-senior","matador-position-banking","matador-position-finance","matador-technology-jenkins","matador-technology-bitbucket","matador-technology-git","matador-technology-swift","matador-technology-teamcity","matador-technology-rest-api","matador-technology-github","matador-technology-xcode","matador-technology-swiftui","matador-technology-uikit","matador-technology-websockets","matador-contract-type-b2b","matador-contract-type-employment-contract","matador-priority-1-high","matador-language-polish","matador-place-warszawa","matador-visibility-online","matador-choose-website-to-publis-poland"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>| ITDS<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/itds.pl\/pl\/praca\/8893\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"| ITDS\" \/>\n<meta property=\"og:description\" content=\"Empower fintech innovation \u2014 build secure, high-performance mobile banking solutions! Warsaw-based opportunity with hybrid work model (2 days in the office per month). As a Senior .NET Developer, you will be working for our client, a leader in the online banking sector committed to delivering modern, secure, and user-friendly mobile applications to a broad customer &hellip; Continued\" \/>\n<meta property=\"og:url\" content=\"https:\/\/itds.pl\/pl\/praca\/8893\/\" \/>\n<meta property=\"og:site_name\" content=\"ITDS\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-12T15:57:34+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minuty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/praca\\\/8893\\\/\",\"url\":\"https:\\\/\\\/itds.pl\\\/pl\\\/praca\\\/8893\\\/\",\"name\":\"| ITDS\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#website\"},\"datePublished\":\"2026-10-12T15:50:54+00:00\",\"dateModified\":\"2026-10-12T15:57:34+00:00\",\"inLanguage\":\"pl-PL\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/itds.pl\\\/pl\\\/praca\\\/8893\\\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#website\",\"url\":\"https:\\\/\\\/itds.pl\\\/pl\\\/\",\"name\":\"ITDS\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/itds.pl\\\/pl\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"pl-PL\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#organization\",\"name\":\"ITDS\",\"url\":\"https:\\\/\\\/itds.pl\\\/pl\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"pl-PL\",\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/itds.pl\\\/app\\\/uploads\\\/2026\\\/05\\\/ITDS_logo-1.png\",\"contentUrl\":\"https:\\\/\\\/itds.pl\\\/app\\\/uploads\\\/2026\\\/05\\\/ITDS_logo-1.png\",\"width\":650,\"height\":400,\"caption\":\"ITDS\"},\"image\":{\"@id\":\"https:\\\/\\\/itds.pl\\\/pl\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"| ITDS","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/itds.pl\/pl\/praca\/8893\/","og_locale":"pl_PL","og_type":"article","og_title":"| ITDS","og_description":"Empower fintech innovation \u2014 build secure, high-performance mobile banking solutions! Warsaw-based opportunity with hybrid work model (2 days in the office per month). As a Senior .NET Developer, you will be working for our client, a leader in the online banking sector committed to delivering modern, secure, and user-friendly mobile applications to a broad customer &hellip; Continued","og_url":"https:\/\/itds.pl\/pl\/praca\/8893\/","og_site_name":"ITDS","article_modified_time":"2026-10-12T15:57:34+00:00","twitter_card":"summary_large_image","twitter_misc":{"Szacowany czas czytania":"2 minuty"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/itds.pl\/pl\/praca\/8893\/","url":"https:\/\/itds.pl\/pl\/praca\/8893\/","name":"| ITDS","isPartOf":{"@id":"https:\/\/itds.pl\/pl\/#website"},"datePublished":"2026-10-12T15:50:54+00:00","dateModified":"2026-10-12T15:57:34+00:00","inLanguage":"pl-PL","potentialAction":[{"@type":"ReadAction","target":["https:\/\/itds.pl\/pl\/praca\/8893\/"]}]},{"@type":"WebSite","@id":"https:\/\/itds.pl\/pl\/#website","url":"https:\/\/itds.pl\/pl\/","name":"ITDS","description":"","publisher":{"@id":"https:\/\/itds.pl\/pl\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/itds.pl\/pl\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"pl-PL"},{"@type":"Organization","@id":"https:\/\/itds.pl\/pl\/#organization","name":"ITDS","url":"https:\/\/itds.pl\/pl\/","logo":{"@type":"ImageObject","inLanguage":"pl-PL","@id":"https:\/\/itds.pl\/pl\/#\/schema\/logo\/image\/","url":"https:\/\/itds.pl\/app\/uploads\/2026\/05\/ITDS_logo-1.png","contentUrl":"https:\/\/itds.pl\/app\/uploads\/2026\/05\/ITDS_logo-1.png","width":650,"height":400,"caption":"ITDS"},"image":{"@id":"https:\/\/itds.pl\/pl\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-job-listings\/8893","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-job-listings"}],"about":[{"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/types\/matador-job-listings"}],"wp:attachment":[{"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/media?parent=8893"}],"wp:term":[{"taxonomy":"matador-categories","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-categories?post=8893"},{"taxonomy":"matador-locations","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-locations?post=8893"},{"taxonomy":"matador-types","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-types?post=8893"},{"taxonomy":"matador-remote-job-possible","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-remote-job-possible?post=8893"},{"taxonomy":"matador-skills","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-skills?post=8893"},{"taxonomy":"matador-seniority","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-seniority?post=8893"},{"taxonomy":"matador-position","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-position?post=8893"},{"taxonomy":"matador-technology","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-technology?post=8893"},{"taxonomy":"matador-contract-type","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-contract-type?post=8893"},{"taxonomy":"matador-priority","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-priority?post=8893"},{"taxonomy":"matador-language","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-language?post=8893"},{"taxonomy":"matador-place","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-place?post=8893"},{"taxonomy":"matador-visibility","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-visibility?post=8893"},{"taxonomy":"matador-choose-website-to-publis","embeddable":true,"href":"https:\/\/itds.pl\/pl\/wp-json\/wp\/v2\/matador-choose-website-to-publis?post=8893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}