October 2025 developer monthly summary focusing on delivering wallet-related features, bug fixes, and cross-repo alignment to improve wallet reliability and billing transparency across lago-api and lago-openapi.

September 2025 performance for getlago/lago-api focused on wallet validation improvements and recurring-rule limit enforcement. Delivered alignment of validation errors and a new invalid_amount error code, and implemented wallet-specific min/max limits for fixed-type recurring rules on create and update, with expanded test coverage and update-time validation to enforce limits. These changes improve data integrity, user experience, and risk management in wallet transactions and recurring billing.

August 2025: Delivered targeted features that improve revenue accuracy, transaction processing, and API clarity, while modernizing initialization patterns to reduce boilerplate and align with DB defaults. Key investments in data correctness and API governance set the foundation for scalable growth.

July 2025 highlights: Delivered end-to-end Pricing Units functionality in Lago API and extended API schema; improved event data retrieval performance; strengthened Stripe payment processing reliability; refined invoice formatting and precision; and expanded pricing units support in invoices and PDFs.

June 2025 monthly summary: Delivered the Pricing Units framework in lago-api with core models (PricingUnit, AppliedPricingUnit, PricingUnitUsage) and a GraphQL API for managing, searching by name/code, and enforcing data integrity, enabling usage-based pricing planning and integration with charges and plans. Refined billing reliability by moving validation into the Charge model and enhancing invoice previews for plan upgrades/downgrades, resulting in clearer user errors and more accurate billing previews. Improved code quality by addressing RuboCop warnings across services, reducing noise in static analysis. In lago, achieved environment parity for PDF generation by aligning development and production Gotenberg image versions, ensuring consistent PDF rendering across environments. These efforts collectively reduce billing risk, accelerate pricing feature delivery, and improve developer productivity.

May 2025 for getlago/lago-api: Delivered PricingUnit model and supporting services/schema to enable custom currencies and premium license pricing; fixed payment provider codes uniqueness validation to ignore discarded records and added tests. Result: enhanced pricing flexibility and data integrity, enabling richer pricing strategies and more reliable billing workflows. Demonstrated skills in API design, schema evolution, validation, and test coverage.

April 2025 (getlago/lago-api): Delivered wallet transaction enhancements, payment URL reliability, and data integrity fixes across billing and analytics. Key improvements include backfilling invoice_id on wallet transactions and conditional invoice display in GraphQL, introducing a 24-hour reusable payment URL window via PaymentIntent, correcting invoice previews for downgraded subscriptions to reflect refunds, and gating Segment tracking to active memberships to improve data quality. These changes reduce double payments, improve revenue recognition, and provide cleaner analytics for business decisions. Technologies demonstrated include GraphQL, PaymentIntent workflows, data backfilling, and telemetry governance.

March 2025 monthly summary for development work on getlago/lago-api focused on billing accuracy, lifecycle simulation, and increased resilience of background processing. Delivered two key features/bug fixes with clear business value and several technical improvements.

February 2025: Backend delivery and debugging enhancements across lago-api and lago. Focused on data integrity during invoice previews, accurate financial estimations, webhook reliability for retry scenarios, and developer experience improvements with docker-compose debugging.

Monthly work summary for 2025-01 focusing on getlago/lago-api. Highlights include feature deliveries for invoice handling, bug fixes, and improvements to preview and tax calculation workflows, with direct business value in query accuracy, billing correctness, and performance.

December 2024 monthly summary for the lago-api team focusing on key business value and technical accomplishments. Highlights: - Strengthened API security and governance via API key-based access control and per-action permissions with premium integration support. - Hardened API key management by preserving existing permissions on edits to prevent data loss. - Expanded credit notes export and query capabilities (CSV, GraphQL, enhanced filters) with a data export refactor and resolution of ambiguous SQL columns when multiple filters are applied. - Elevated test quality and reliability through focused test refactors, configuration updates, and broader coverage (Fuubar, FactoryBot, PaperTrail, associations, validations).

November 2024 monthly summary for getlago/lago-api focused on API key security, governance, auditing, and data integrity improvements that deliver clear business value and reliable developer experience.

October 2024 monthly summary for lago-api focused on API keys management and security improvements. Delivered a dedicated ApiKey model, migrated existing API key data, updated authorization to use the new model, and added GraphQL support for managing API keys with sanitized values and unit tests. The change decouples API keys from Organization, enabling finer-grained access control, better auditability, and safer key lifecycle management.