Manuel Gilberto Leon Villegas

Developed backend solutions and enterprise integrations for commercial, logistics, inventory, and administration processes. Designed an Azure Functions to SAP Business One integration using Inbox/Outbox patterns, idempotency, and duplicate control. Built REST APIs for customers, suppliers, inventories, commercial documents, payments, and cancellations. Implemented and maintained SQL Server T-SQL procedures for transactional operations.

Built and maintained enterprise .NET applications and Angular frontends for industrial clients. Contributed to solutions for Ternium covering management, metrics, logistics, and real-time production monitoring. Implemented APIs, database queries, and stored procedures, performing functional testing and production deployments. Used source control workflows with Git and GitHub.

Coordinated a technical team of three developers and supported delivery of backend services. Participated in an API for plant personnel mood/status registration for Heineken. Developed a cash management system for cash flow and supported ERP-related work for tube purchasing/sales. Worked with Windows Services and delivered integrations backed by SQL Server.

Developed enterprise applications across industries including insurance and sports-related systems. Supported Ternium solutions for monitoring, traceability, and logistics, and worked on payment settlement for CHUBB. Participated in ticket administration for Club Tigres. Implemented backend features using SQL Server, Dapper, SignalR, and Angular-based user interfaces.

Developed internal applications for accounting, tax, administrative, and audit processes. Worked on a project management system to track activities. Delivered backend functionality using C# and SQL Server with a web UI layer using JavaScript, jQuery, and Bootstrap. Supported data access through Entity Framework and related database operations.

Personal platform project for ticketing built as an end-to-end modular monolith. The implementation includes a domain and persistence layer with handlers, endpoints, contracts, validations, and database migrations. It also covers frontend development with internationalization. The project is being advanced with CI/CD using GitHub Actions, Docker, and automated deployment.