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Mid-Level Fullstack .NET Developer – Angular & Payment Systems Miejsce pracy: Warszawa Technologies we use Expected C# .NET ASP.NET Core Angular Web API Entity Framework LINQ Dapper Microsoft SQL Server T-SQL SoapUI XML Jira Git TeamCity Optional Docker Kubernetes Operating system Windows About the project As a Mid-Level Fullstack .NET Developer – Angular & Payment Systems, you will be working for our client, a leading online banking organization dedicated to delivering secure and innovative digital financial services to a broad customer base. Join a dynamic team responsible for developing and maintaining mission-critical card processing platforms that handle authorization, settlement, and integrations with value-added services. Focused on high availability, high volume processing, your work will impact hundreds of thousands of daily transactions, where reliability, performance, security, and regulatory compliance are paramount. Unleash the Power of High-Volume Payment Systems — Build the Future of Digital Finance! Warsaw-based opportunity with hybrid work model (2 days in the office/month). Only candidates with an existing legal right to work in the European Union will be considered for this role. Your responsibilities Develop and maintain .NET applications within the payment card domain Design and implement new features in line with business needs and compliance standards Integrate applications with external systems using REST, SOAP, and messaging queues Optimize system performance, scalability, and security in high-availability environments Collaborate with business analysts, architects, and QA teams within Agile/Scrum frameworks Participate in system and user acceptance testing (SIT, UAT), conduct code reviews, and produce technical documentation Our requirements 3 years of experience in software development using C# and .NET (Framework and/or Core) Strong knowledge of ASP.NET Core, Angular, Web API, Entity Framework, LINQ, Dapper, and SQL Server (T-SQL), including query optimization Solid understanding of software engineering best practices, including SOLID principles, design patterns, and unit testing with xUnit or NUnit Hands-on experience with system integrations using REST, SOAP, JSON, and XML Experience working in Agile environments with Jira, Git, CI/CD pipelines, and TeamCity Polish: Communicative level Optional Experience in the payment cards domain or related payment solutions Knowledge of Docker, Kubernetes, and microservices architectures Experience in designing and delivering complex, distributed systems This is how we organize our work This is how we work at the clients site agile scrum What we offer Stable and long-term cooperation with very good conditions Enhance your skills and develop your expertise in the financial industry Work on the most strategic projects available in the market Define your career roadmap and develop yourself in the best and fastest possible way by delivering strategic projects for different clients of ITDS over several years Participate in Social Events, training, and work in an international environment Access to attractive Medical Package Access to Multisport Program Access to Pluralsight Flexible hours Benefits sharing the costs of sports activities private medical care remote work opportunities flexible working time fruits integration events corporate gym saving & investment scheme no dress code coffee / tea drinks christmas gifts birthday celebration sharing the costs of a streaming platform subscription access to 100 projects access to Pluralsight Recruitment stages first online interview second online interview GETREADY to meet with us! ITDS Business Consultants is involved in many various, innovative and professional IT projects for international companies in the financial industry in Europe. We offer an environment for professional, ambitious, and driven people. We would like to meet you. If you are interested please apply and attach your CV in English or Polish, including a statement that you agree to our processing and storing of your personal data. ITDS’s Whistleblower Procedure You can report violations in accordance with ITDS’s Whistleblower Procedure available here: ITDS Polska Sp. z o.o. ITDS supports financial service providers to take the next steps. We identify what’s possible, every day. Opportunities in the areas of technology, organization, and digitization. We see where banks, insurers, payment companies, or fintech can go and how they can get there. That’s why we want to stimulate you to ramp up your ambition. Forget what you perceive as restraints and step towards the new reality. ITDS in Poland - Pure player in new Technologies & Financial Industry 300 IT implementation professionals 20 clients in the Banking, Insurance, Payment & Fintech Industry ITDS excels in digital strategy delivery and implementation of best-of-breed lending solutions. ITDS has delivered successful strategic projects throughout Europe since 1998. We combine the experience we’ve accumulated with in-depth knowledge of technologies, business processes, and EU legislation to unlock new business opportunities. Informujemy, że administratorem danych jest ITDS z siedzibą w Warszawie, ul. Złota 59 (dalej jako "administrator"). Masz prawo do żądania dostępu do swoich danych osobowych, ich sprostowania, usunięcia lub ograniczenia przetwarzania, prawo do wniesienia sprzeciwu wobec przetwarzania, a także prawo do przenoszenia danych oraz wniesienia skargi do organu nadzorczego. Dane osobowe przetwarzane będą w celu realizacji procesu rekrutacji. Podanie danych w zakresie wynikającym z ustawy z dnia 26 czerwca 1974 r. Kodeks pracy jest obowiązkowe. W pozostałym zakresie podanie danych jest dobrowolne. Odmowa podania danych obowiązkowych może skutkować brakiem możliwości przeprowadzenia procesu rekrutacji. Administrator przetwarza dane obowiązkowe na podstawie ciążącego na nim obowiązku prawnego, zaś w zakresie danych dodatkowych podstawą przetwarzania jest zgoda. Dane osobowe będą przetwarzane do czasu zakończenia postępowania rekrutacyjnego i przez okres możliwości dochodzenia ewentualnych roszczeń, a w przypadku wyrażenia zgody na udział w przyszłych postępowaniach rekrutacyjnych - do czasu wycofania tej zgody. Zgoda na przetwarzanie danych osobowych może zostać wycofana w dowolnym momencie. Odbiorcą danych jest serwis Hello HR oraz inne podmioty, którym powierzyliśmy przetwarzanie danych w związku z rekrutacją. Naruszenia można zgłaszać zgodnie z Procedurą zgłaszania nieprawidłowości ITDS dostępną tutaj: