During June 2025, Carlos focused on backend development for the mercurjs/mercur repository, addressing a critical issue in the seed workflow. He resolved an Awilix resolution error by updating the configuration module import within seed-functions, ensuring the configuration service was properly imported and resolved during seeding. This TypeScript-based fix improved the reliability and reproducibility of seed runs, reducing manual intervention for both developers and CI environments. Carlos’s work enhanced code maintainability and clarity around configuration imports, making future changes easier. His targeted bug fix demonstrated depth in backend engineering and contributed to more stable development and deployment pipelines.