Atharva worked on the hiero-ledger/hiero-sdk-cpp repository, focusing on transaction management using C++ and software engineering principles. He developed a feature that preserves user-defined TransactionId values during transaction processing, addressing the need for deterministic identifiers in audit and integration scenarios. By introducing a flag to prevent automatic regeneration of TransactionId when explicitly set by users, Atharva ensured that transaction workflows maintain traceability and compliance with external systems. The implementation demonstrates careful handling of user input and regression safety, resulting in more reliable transaction processing. His work reflects a thoughtful approach to transaction integrity and end-to-end system reliability.