Adrian Dole enhanced the robustness and reliability of MongoDB’s client-side encryption workflows by developing two key features across the mongodb/libmongocrypt and mongodb/specifications repositories. He implemented retry logic for data key rewrap operations in C, addressing transient network failures during KMS encrypt requests and improving error handling. In parallel, Adrian expanded the unified test framework by updating YAML-based test schemas and adding new cases, enabling automated validation of encryption features. His work deepened test coverage and accelerated detection of edge cases, contributing to more secure and maintainable backend systems. The changes reflect a strong focus on cryptography and test automation.