* Client: Avantti Tecnologia * Location: Remote * Contract Type: Independent Contractor (PJ) * Contract Duration: 3 months, with possibility of extension **Main Responsibilities** Support and Bug Fixing Analyze, diagnose, and fix bugs in production .NET (C\#) applications. Handle incidents and problems (N1/N2/N3\) according to agreed SLAs. Fix functional, technical, and integration issues with other systems. **Technical and Business Analysis** Investigate logs, exceptions, and metrics to identify root cause (Root Cause Analysis – RCA). Understand business rules to ensure fixes do not cause unintended side effects. Support support teams and end-user areas in clarifying system behavior. **Evolution and Continuous Improvements** Implement minor enhancements, adjustments, and improvements in legacy and current systems. Refactor code to improve performance, readability, and maintainability. Suggest technical improvements to reduce incident recurrence. **Quality and Stability** Develop and execute unit tests and functional tests to validate fixes. Ensure fixes do not introduce regressions in production. Support controlled deployment processes and post-production validations. **Documentation and Governance** Document fixes, adjustments, and lessons learned. Support updating technical and functional documentation. Follow versioning standards, source code control, and software development best practices. Requirements: Typical Technical Skills Required C\# / .NET Framework / .NET Core REST APIs and Web Services Databases (SQL Server, queries, stored procedures, optimization) Debugging, log analysis, and exception handling Git or another version control system Basic knowledge of CI/CD and environments (DEV, QA, PROD) Team Collaboration Work collaboratively with support analysts, QA, DevOps, and business teams. Receive well-structured tasks from senior team members and work with moderate autonomy. Support junior developers in resolving recurring incidents. Business Value Delivered Reduction of downtime and operational risks. Increased application reliability. Continuous improvement of user experience and system efficiency.