PROJECT INFORMATION:Industry: BankingRemote work: yes, 100%Project language: EnglishBusiness trips: 2 times per year to Warsaw for 2-3 days (expenses on the consultant)Project length: 12 months contracts + prolongations.Start: ASAP / FlexibleAssignment type: B2BRemuneration: up to 190 PLN/hSummary: The Senior .NET Full-Stack Developer is responsible for maintenance of a few clinent’s applications, the role includes also some tasks related to the development of the new features.Responsibilities: Designing and implementing high-quality, efficient, and reusable code. Collaborating with cross-functional teams to define, design, and ship new features. Developing and maintaining web applications using ASP.NET, JavaScript frameworks, and databases. We work with Reacr, Angular and Vue - depending on the app. Actively participating in code reviews to enforce collaborative coding standards. Conducting requirement gathering sessions with stakeholders to ensure optimal understanding of needs. Must Haves: Expert-level proficiency in C#. Expert-level proficiency in .NET Framework and .NET 6+ and also older versions - we work with .NET 4.8a and newer, some features on .NET 9. Advanced experience in Entity Framework. Advanced experience in SQL. Working knowledge of WCF. Advanced experience in WebAPI and RESTful services. Strong development skills in JavaScript and TypeScript. Intermediate skills in React/Vue/Angular or similar technologies - required is experience with one or more FE frameworks. Fluent communication skills in English, both spoken and written. Strong business analysis capabilities with experience in gathering requirements. Understanding of Agile methodologies, preferably experience in Scrum teams. Experienced with Azure DevOps. Nice to Haves: Basic knowledge of GitHub. Basic knowledge of Octopus Deploy.