Worked on the epam/ketcher repository to address a critical issue in the deletion workflow, focusing on ensuring consistent application state during user-initiated deletions. The main contribution involved refactoring the order of sGroup attribute modifications within the deletion process, which eliminated potential inconsistencies and reduced edge-case failures. This work required strong debugging skills and careful code review to confirm that related deletion paths remained unaffected. Using TypeScript, the developer applied targeted checks and validation to maintain stability. The approach demonstrated attention to detail and a methodical mindset, emphasizing both technical excellence and business value through improved reliability and maintainability.