Backend .Net Developer

Zaven is a software company from Wrocław, Poland. We build high-quality custom software for essential industries. Our focus is on practical results and trusting our people, not on strict rules or long processes. If you want to work with smart teams to build important software, and you want to avoid big company bureaucracy, this is the place for you. We are currently developing and maintaining a large-scale platform for ordering home improvement and interior finishing services for our US-based client. That is why we are looking for a skilled . NET Developer to support us in this challenge. In this role, you will be a key part of our backend delivery, participate in system migrations, help reduce technical debt, and work closely with the team to ensure high performance and reliability of the platform. What exactly will you be doing? Maintaining and optimizing existing ASP. NET MVC 5 applications. Supporting and actively participating in the migration of legacy applications to modern . NET Core. Designing and developing modern RESTful APIs using ASP. NET Core. Creating, optimizing, and maintaining T-SQL procedures and functions. Refactoring code and systematically reducing technical debt in legacy areas of the system. Participating in system migrations from on-premise environments to the Azure cloud. Working with Azure DevOps for software delivery and integrating the platform with various third-party APIs. Required Skills & Experience: Solid professional experience in backend software development. Good knowledge of the . NET ecosystem: ASP. NET MVC 5, ASP. NET Web API, ASP. NET Core, and Entity Framework. Strong database skills, including MS SQL Server and fluent T-SQL programming. Hands-on experience with Azure cloud services, particularly Azure Functions. Experience in working with Azure DevOps and CI/CD pipelines. Understanding of Clean Code principles, software architecture, and design patterns. Basic understanding of frontend technologies (HTML, CSS, jQuery) to effectively navigate older parts of the system. Fluent command of Polish and English (both languages are required for project communication). Nice to Have: Experience with AWS (Amazon Web Services) and migrating systems to AWS infrastructure. Project Organization & Tools: Hardware: We provide high-end equipment (MacBook or Dell laptop), or you can choose the BYOD (Bring Your Own Device) option if you prefer. IDE: MS Visual Studio. Workspace & Management: Google Workspace, JIRA, Microsoft Teams