Worked on strengthening Raft stability in the nats-io/nats-server repository by addressing a regression related to term mismatch handling and committed log truncation. Focused on backend development using Go, the work involved updating core consensus logic to prevent incorrect commit index updates and safeguard against truncation of committed entries during term changes. Introduced targeted regression tests to validate correctness in edge cases, ensuring that future changes would not reintroduce the issue. Collaborated closely with a co-author to deliver robust, regression-proof fixes, demonstrating a methodical approach to distributed systems reliability and a strong emphasis on thorough testing and code quality.