
Geraldo Villanueva developed core inventory, production, and financial management features for the Santa-TeresaERP platform, focusing on both backend and frontend engineering. Working in the ST-frontend and ST-backend repositories, he implemented robust CRUD workflows, role-based access control, and data validation using TypeScript, React, and Node.js. Geraldo refactored modules for type safety, standardized API endpoints, and introduced dynamic permission systems to improve security and user experience. His work included integrating React Query for efficient data flow and Zod for schema validation, resulting in scalable, maintainable code that reduced manual errors, improved operational visibility, and supported secure, auditable business processes across modules.
May 2025 monthly report: Delivered substantial backend and frontend enhancements across Santa-TeresaERP ST-backend and ST-frontend, focusing on data integrity, production workflows, and streamlined schemas. Backend improvements include: (1) Category/Recipe/Product Management Enhancements with renaming category_id to id, FK consistency, improved error handling, removal of unit field in recipe, and a category deletion guard to prevent orphaned products; (2) Plant Production Data Integrity Fixes correcting address data type and related validations and route updates; (3) LostSchema Schema Cleanup to simplify the LostSchema. Frontend modernization overhauled the production module: (4) Production Module Overhaul with Ventas page and Recipe Management, including file/type reorganization for products/categories and removal of stock from product forms; and (5) Product Losses Management — API actions, React hooks, and schemas integrated into the production flow. These changes collectively reduce data inconsistencies, safeguard product lifecycles, and enable more robust production operations.
May 2025 monthly report: Delivered substantial backend and frontend enhancements across Santa-TeresaERP ST-backend and ST-frontend, focusing on data integrity, production workflows, and streamlined schemas. Backend improvements include: (1) Category/Recipe/Product Management Enhancements with renaming category_id to id, FK consistency, improved error handling, removal of unit field in recipe, and a category deletion guard to prevent orphaned products; (2) Plant Production Data Integrity Fixes correcting address data type and related validations and route updates; (3) LostSchema Schema Cleanup to simplify the LostSchema. Frontend modernization overhauled the production module: (4) Production Module Overhaul with Ventas page and Recipe Management, including file/type reorganization for products/categories and removal of stock from product forms; and (5) Product Losses Management — API actions, React hooks, and schemas integrated into the production flow. These changes collectively reduce data inconsistencies, safeguard product lifecycles, and enable more robust production operations.
Delivered two major front-end enhancements for Santa-TeresaERP/ST-frontend in April 2025, focusing on product management and production workflows. Product Management UI Enhancements improved product listing UX, create/update modals, hover effects, responsive layout, and added confirmation modals for critical actions, with styling-focused commits driving UI polish. Production Section Enhancements introduced a new production dashboard page, terminology alignment, lost item management, and updated navigation. These changes enhance operational visibility, reduce errors, and accelerate product and production workflows. The work demonstrates strong front-end styling, refactoring, and responsive design skills with a focus on consistency across modules and clear business value.
Delivered two major front-end enhancements for Santa-TeresaERP/ST-frontend in April 2025, focusing on product management and production workflows. Product Management UI Enhancements improved product listing UX, create/update modals, hover effects, responsive layout, and added confirmation modals for critical actions, with styling-focused commits driving UI polish. Production Section Enhancements introduced a new production dashboard page, terminology alignment, lost item management, and updated navigation. These changes enhance operational visibility, reduce errors, and accelerate product and production workflows. The work demonstrates strong front-end styling, refactoring, and responsive design skills with a focus on consistency across modules and clear business value.
January 2025 performance highlights focused on delivering a cohesive catalog, governance, and security layer across backend and frontend. Key architecture work established data models, validation, and API surface for product/category management; module-based access control (RBAC) scaffolding; and robust user management improvements. Frontend enhancements aligned with backend capabilities to deliver validated inputs, per-module permissions, and improved profile workflows. This combination enables faster feature delivery with safer, auditable access control and cleaner admin UX.
January 2025 performance highlights focused on delivering a cohesive catalog, governance, and security layer across backend and frontend. Key architecture work established data models, validation, and API surface for product/category management; module-based access control (RBAC) scaffolding; and robust user management improvements. Frontend enhancements aligned with backend capabilities to deliver validated inputs, per-module permissions, and improved profile workflows. This combination enables faster feature delivery with safer, auditable access control and cleaner admin UX.
December 2024 performance summary for Santa-TeresaERP/ST-backend. 1) Key features delivered: - RBAC data models and permissions framework implemented with Sequelize, defining Permissions, Roles, and RolesPermissions models and type definitions. Includes groundwork for role-based access control. - Rental service data models added (customers, locations, rentals) with defined attributes and relationships; docker-compose.yml updated to support proper service configuration. 2) Major bugs fixed: - No major defects reported or fixed this month; focus remained on foundational data modeling and deployment readiness. 3) Overall impact and accomplishments: - Provides a solid security-oriented data model and a scalable foundation for rental management, enabling controlled access and streamlined operations. Deployment readiness improved through docker-compose updates, reducing environment-related risks and accelerating future feature work. 4) Technologies/skills demonstrated: - Sequelize ORM modeling, relational data design, access control modeling, and Docker Compose-based deployment configuration.
December 2024 performance summary for Santa-TeresaERP/ST-backend. 1) Key features delivered: - RBAC data models and permissions framework implemented with Sequelize, defining Permissions, Roles, and RolesPermissions models and type definitions. Includes groundwork for role-based access control. - Rental service data models added (customers, locations, rentals) with defined attributes and relationships; docker-compose.yml updated to support proper service configuration. 2) Major bugs fixed: - No major defects reported or fixed this month; focus remained on foundational data modeling and deployment readiness. 3) Overall impact and accomplishments: - Provides a solid security-oriented data model and a scalable foundation for rental management, enabling controlled access and streamlined operations. Deployment readiness improved through docker-compose updates, reducing environment-related risks and accelerating future feature work. 4) Technologies/skills demonstrated: - Sequelize ORM modeling, relational data design, access control modeling, and Docker Compose-based deployment configuration.

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