Giuseppe worked on the graphprotocol/graph-node repository, focusing on backend development and database reliability. During January 2025, he addressed a critical issue in the PostgreSQL store by correcting an SQL join between the current_version and pending_version tables, ensuring the join used the id column rather than the subgraph column. This fix improved data integrity and accuracy for versioned data queries across the s and v tables, directly supporting production dashboards and downstream consumers. Giuseppe implemented the solution in Rust and SQL, isolating the change to the storage layer and providing targeted review notes to enhance future code maintainability and clarity.