Guilherme Andre

Develop and maintain backend services and REST APIs in .NET 6 / ASP.NET Core for router-management and customer-facing telecom platforms. Contribute to the NOS customer web application using Flutter/Dart, improving router configuration flows, navigation behaviour, UI stability and production readiness.

Delivered freelance development support through Upwork, focused on bug fixing, code corrections and maintenance across C#/.NET, Angular and SQL-based systems. Diagnosed and resolved frontend, backend and data-related issues in existing production codebases.

Maintained and extended a laboratory management system using .NET Core and Azure DevOps. Fixed critical API and SQL performance issues, reducing slow requests and system failures.

Debugged and optimised APIs and SSIS flows, ensuring stable integrations between systems. Implemented features while keeping compatibility with existing SSIS packages.

Built a logistics management system from scratch using .NET Core, SQL Server and Angular. Implemented GPS tracking and delivery scheduling through REST APIs.

Improved usability and functionality of an electronic condiment exchange platform using .NET Core, Oracle, AWS services, SOAP, REST and MVC. Fixed critical API bugs and helped stabilise production behaviour.

Developed and deployed application features using .NET Core / C#, Docker and unit testing as part of delivery workflows. Contributed to backend development, code reviews and feature delivery in an Agile SCRUM environment.

Reverse engineered and optimised legacy C# and VB applications for better maintainability. Updated and fixed SQL Server and Oracle stored procedures to improve data reliability.

Pursuing a Bachelor of Science in Computer Science.

Studied Japanese language at Nippon Academy from 2022 to 2024.

Completed a Software Development Academy program.