We’re looking for an experienced <\/span><\/span>FullStack .NET Developer<\/span><\/span><\/b> to join a <\/span><\/span>greenfield digital transformation project<\/span><\/span><\/b> in the corporate banking sector.<\/span><\/span> <\/div> You’ll help build a <\/span><\/span>modern, high\-performance system from scratch<\/span><\/span><\/b> using <\/span><\/span>.NET 6\/8, React, Kafka, and microservices<\/span><\/span><\/b> integrated with multiple enterprise platforms — a project that will have a long\-term impact on thousands of users.<\/span><\/span><\/span> <\/div> <\/span><\/span> <\/div> Responsibilities:<\/b><\/span><\/span><\/span> <\/div> <\/span><\/span> <\/div>Build scalable backend features in .NET 6\/8 and contribute to a microservices\-based architecture<\/span><\/span><\/span><\/p><\/li>Develop clean, reusable components in React integrated with REST APIs<\/span><\/span><\/span><\/p><\/li>Implement and integrate REST\/SOAP services and event\-driven systems with Kafka<\/span><\/span><\/span><\/p><\/li>Work closely with analysts, architects, and business stakeholders on requirements and design<\/span><\/span><\/span><\/p><\/li>Participate in testing, deployment, and optimisation to ensure high system performance<\/span><\/span><\/span><\/p><\/li> <\/div><\/span>Requirements<\/h3>5+ years of experience in .NET development<\/span><\/span><\/p><\/li>Strong skills in .NET 6\/8, REST, SOAP, SQL Server, Entity Framework<\/span><\/span><\/span><\/p><\/li>Hands\-on experience with React<\/span><\/span><\/span><\/p><\/li>Familiarity with Kafka and distributed\/microservices architecture<\/span><\/span><\/span><\/p><\/li>Understanding of enterprise system integration and APIs<\/span><\/span><\/span><\/p><\/li>Fluency in Polish and English (B2 level or higher)<\/span><\/span><\/span>Nice to have:<\/span><\/span><\/b><\/span><\/span><\/p><\/li>Experience in banking or financial systems<\/span><\/span><\/span><\/p><\/li>Knowledge of secure systems or mobile banking<\/span><\/span><\/span><\/p><\/li>Familiarity with DDD, event storming, or user story mapping<\/span><\/span><\/span><\/p><\/li>Experience working in Agile\/SCRUM environments<\/span><\/span><\/p><\/li> <\/div><\/span>Benefits<\/h3>Competitive salary<\/span><\/p><\/li>Fully remote or hybrid model<\/span><\/span><\/p><\/li>Long\-term B2B contract with a stable project pipeline<\/span><\/span><\/p><\/li>Comprehensive healthcare<\/span><\/span><\/p><\/li>Work in a multilingual, multinational, and multicultural environment on international projects<\/span><\/span><\/p><\/li> <\/div><\/span> <\/body> <\/html>"}}],"isMobile":false,"iframe":"true","jobType":"Full time","applyName":"Apply Now","zsoid":"47528597","FontFamily":"Verdana, Geneva, sans\-serif","jobOtherDetails":[{"fieldLabel":"Industry","uitype":2,"value":"Financial Sector"},{"fieldLabel":"City","uitype":1,"value":"Warsaw"},{"fieldLabel":"State\/Province","uitype":1,"value":"Masovian Voivodeship"},{"fieldLabel":"Zip\/Postal Code","uitype":1,"value":"00\-002"}],"headerName":"FullStack .NET + React Developer","widgetId":"300725000000072311","isJobBoard":"false","userId":"300725000000079003","attachArr":[],"customTemplate":"5","isCandidateLoginEnabled":false,"jobId":"300725000046082225","FontSize":"12","location":"Warsaw","embedsource":"CareerSite","logoId":"8penb8e1b1b248bcc41a9936b87edad7bccfc"}