.NET Developer

Industry: debt collectionRemote work: 100% Project language: English FTE: full-time Project length: until the end of 2026 + prolongations Start: ASAP Assignment type: B2B Remuneration: up to 180 PLN/h Job Summary: The .NET Developer will be primarily responsible for maintaining and developing an existing self-service portal used by customers and clients, which incorporates legacy code as well as newer components. Responsibilities: • Maintain and stabilize an existing ASP.NET application, ensuring uptime and functionality. • Perform IIS hosting and configuration for the application. • Understand legacy authentication patterns to facilitate secure access. • Work with poorly documented codebases, improving clarity and stability. • Periodically develop new features as required by the project. Must Haves: • Proficient in ASP.NET Web Forms / classic .NET technology (e.g., client_login.aspx). • Experience with IIS hosting and configuration. • Strong understanding of legacy authentication methods. • Ability to read and stabilize poorly documented codebases. Nice to Have: • Familiarity with newer development practices and components (e.g., ASP.NET MVC Core). • Experience with MS SQL, including queries and stored procedures. • Knowledge of application maintenance workflows.