
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.

October 2025 monthly summary for Santa-TeresaERP/ST-frontend focused on delivering core feature capabilities in financial operations and a scalable permission model to improve security and UX. Delivered two major frontend capabilities with clear traceability to commits, enabling safer feature access and streamlined admin workflows.
October 2025 monthly summary for Santa-TeresaERP/ST-frontend focused on delivering core feature capabilities in financial operations and a scalable permission model to improve security and UX. Delivered two major frontend capabilities with clear traceability to commits, enabling safer feature access and streamlined admin workflows.
September 2025 monthly summary for Santa-TeresaERP development: Delivered cross-functional backend and frontend enhancements focusing on data integrity, security, and user experience. Implemented backend refinements for cash session and return handling, introduced a unified frontend permissions system with robust error handling, and standardized date formatting across modules to prevent timezone-related issues. These efforts reduce data inconsistencies, improve cross-module security, and support scalable business processes.
September 2025 monthly summary for Santa-TeresaERP development: Delivered cross-functional backend and frontend enhancements focusing on data integrity, security, and user experience. Implemented backend refinements for cash session and return handling, introduced a unified frontend permissions system with robust error handling, and standardized date formatting across modules to prevent timezone-related issues. These efforts reduce data inconsistencies, improve cross-module security, and support scalable business processes.
August 2025: Strengthened security, modular permissions, and UI consistency across Santa-TeresaERP frontend and backend. Delivered a foundational RBAC overhaul, enhanced user identity APIs, and targeted UI/UX refinements, enabling safer, faster release cycles and improved business operations.
August 2025: Strengthened security, modular permissions, and UI consistency across Santa-TeresaERP frontend and backend. Delivered a foundational RBAC overhaul, enhanced user identity APIs, and targeted UI/UX refinements, enabling safer, faster release cycles and improved business operations.
July 2025 performance summary: Delivered core production, inventory, and sales capabilities with strong data integrity, improved financial traceability, and enhanced security. Backend introduced Warehouse Resource Management with FIFO-based consumption and material validation, plus logging for production resource usage. Implemented CRUD operations for warehouse stores and sales with validation and error handling, and enhanced cash session handling with totals, status tracking, and store-level filtering. Frontend delivered a richer Sales Management experience with CRUD for sales and details, robust UI modals, and React Query-based data flow, alongside a comprehensive Permissions & Access Control system. Museum module was refactored for a centralized API client and improved UI support. These changes reduce production delays due to material constraints, improve financial and operational visibility, and strengthen security and data quality across the stack.
July 2025 performance summary: Delivered core production, inventory, and sales capabilities with strong data integrity, improved financial traceability, and enhanced security. Backend introduced Warehouse Resource Management with FIFO-based consumption and material validation, plus logging for production resource usage. Implemented CRUD operations for warehouse stores and sales with validation and error handling, and enhanced cash session handling with totals, status tracking, and store-level filtering. Frontend delivered a richer Sales Management experience with CRUD for sales and details, robust UI modals, and React Query-based data flow, alongside a comprehensive Permissions & Access Control system. Museum module was refactored for a centralized API client and improved UI support. These changes reduce production delays due to material constraints, improve financial and operational visibility, and strengthen security and data quality across the stack.
June 2025 performance-focused sprint delivering robust warehouse movement capabilities across backend and frontend, expanded warehouse/resource/product management, and improved production workflows. The work prioritized business value: inventory accuracy, operational reliability, and faster time-to-value for warehouse operations. Key outcomes include new API endpoints, model associations with UUID validation, comprehensive CRUD for warehouses/resources/products, and improved error handling and route consistency to support scalable inventory operations.
June 2025 performance-focused sprint delivering robust warehouse movement capabilities across backend and frontend, expanded warehouse/resource/product management, and improved production workflows. The work prioritized business value: inventory accuracy, operational reliability, and faster time-to-value for warehouse operations. Key outcomes include new API endpoints, model associations with UUID validation, comprehensive CRUD for warehouses/resources/products, and improved error handling and route consistency to support scalable inventory operations.
May 2025 focused on delivering data-driven inventory and product lifecycle capabilities, while beginning a broader platform modernization. Frontend delivered visibility into losses with flexible filtering, safer product deletion, and recipe-driven product creation. Backend standardized production identifiers, made product images optional, and enriched recipe/resource schemas. Production/plant modules were refactored for stronger type safety and clearer stats. These changes improve data quality, reduce manual errors, and enable scalable growth in manufacturing and product operations.
May 2025 focused on delivering data-driven inventory and product lifecycle capabilities, while beginning a broader platform modernization. Frontend delivered visibility into losses with flexible filtering, safer product deletion, and recipe-driven product creation. Backend standardized production identifiers, made product images optional, and enriched recipe/resource schemas. Production/plant modules were refactored for stronger type safety and clearer stats. These changes improve data quality, reduce manual errors, and enable scalable growth in manufacturing and product operations.
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