Worked on the BitGoJS repository to address a critical issue affecting the IPTestnet transaction explorer. Focused on backend development using TypeScript, the developer delivered a targeted bug fix that restored user access by updating the transaction explorer URL to follow established conventions. This change resolved persistent 404 errors and ensured consistency with existing explorer URL patterns across networks, directly improving reliability and user experience. The work emphasized maintainability and traceability by providing explicit commit messages and linking to relevant tickets, supporting future audits. Throughout the project, the developer demonstrated attention to detail and a methodical approach to backend problem-solving.