Resources will participate in the reengineering and modernization process of critical systems focusing on: Transit processing and validation (development of validators, query consoles, and application of business rules). Payment circuits and payment methods (reengineering of the unified circuit, management of rejections, and integration with clients and payment methods). Centralized monitoring and management (development of monitoring and incident consoles). Support for business processes (toll management, budgeting, and gantries). A company focused on operational management and the development of large-scale urban and interurban infrastructure projects is seeking a Microsoft Developer to participate in the reengineering and modernization of transit processing and validation systems, as well as in the development of central consoles and managers for critical information. The role involves working on the design, development, and optimization of high-impact applications, consoles, and information managers, ensuring system scalability, efficiency, and reliability. Requirements ✅ Mandatory Requirements Development in .NET (VB.NET, C#, .NET Framework, .NET Core) and REST APIs. Programming in SQL Server (Stored Procedures, Functions, Tuning). Proficient use of Visual Studio. Desirable Knowledge of Bootstrap 5. Experience using ChatGPT or other development assistants. Experience with Microsoft MAUI. Knowledge of React JS / React Native. Familiarity with GitLab, Docker, NiFi, Kafka. **Conditions:** Direct hiring with the company. Modality: 4 days onsite, 1 day remote. Location: CABA, Parque Avellaneda. Benefits Osde 210 health insurance for employee and immediate family. Annual bonus based on goal achievement. Birthday free day. On-site cafeteria. Daycare. Shuttle service (from Constitución to Parque Avellaneda)