Developed an in-memory backend driver for k3s-io/kine, enabling ephemeral and testing environments to operate without SQL or NATS dependencies. This solution used a revision log and a B-tree data structure to support efficient point and range operations, achieving feature parity with SQL-backed storage for TTL and lease management. In parallel, addressed a static build issue in the PHP ext/uri module by defining LEXBOR_STATIC in the Windows build process, resolving dllimport-related errors and improving distribution reliability. The work demonstrated expertise in Go and C, backend development, static linking, and cross-repository collaboration, with a focus on robust testing and CI integration.