Worked on stabilizing and modernizing the core wallet experience in the Giveth/dapps-v2 repository, focusing on security-driven dependency upgrades, standardized chain context for contract wallet signing, and robust on-chain wallet detection. Leveraged TypeScript, React, and Web3 technologies to improve wallet and provider reliability, ensuring correct chain handling and enhancing developer experience. Later, contributed to the Giveth/impact-graph repository by refactoring backend data loading paths, specifically separating projectPower queries to optimize database performance and reduce query complexity. Demonstrated backend development and database optimization skills, delivering maintainable improvements that reduced the risk of timeouts and simplified future maintenance without introducing new bugs.