
Tiago worked on the getlago/lago-api and getlago/lago-openapi repositories, focusing on backend enhancements for credit notes and fee calculation features. He enriched the Lago API’s credit notes endpoint to return nested customer data and billing configurations, aligning OpenAPI surfaces to improve data context and reduce N+1 query risks. Using Ruby, Ruby on Rails, and YAML, Tiago updated serializers and preloaded dependencies to ensure data consistency and simplify integration for client applications. He also optimized the Charge Service by conditionally skipping adjusted fee loading, reducing unnecessary database queries and improving performance for common usage scenarios in fee-related operations.
April 2026 monthly summary: Implemented a performance optimization in lago-api’s Charge Service to prevent N+1 data loading by skipping the adjusted_fee when the context is current_usage, reducing unnecessary queries and data transfer during fee calculations.
April 2026 monthly summary: Implemented a performance optimization in lago-api’s Charge Service to prevent N+1 data loading by skipping the adjusted_fee when the context is current_usage, reducing unnecessary queries and data transfer during fee calculations.
March 2026 monthly summary: Implemented data-enriched Cred it Notes endpoints and aligned OpenAPI surfaces to improve data context, performance, and developer experience. Delivered nested customer data with billing configurations in the Lago API credit notes endpoint and extended the OpenAPI credit notes list to include customer information. These changes reduce N+1 query risk, improve data consistency, and simplify integration for frontend and partner apps.
March 2026 monthly summary: Implemented data-enriched Cred it Notes endpoints and aligned OpenAPI surfaces to improve data context, performance, and developer experience. Delivered nested customer data with billing configurations in the Lago API credit notes endpoint and extended the OpenAPI credit notes list to include customer information. These changes reduce N+1 query risk, improve data consistency, and simplify integration for frontend and partner apps.

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