Worked on performance and documentation improvements across the 0xMiden/miden-node and 0xPolygonMiden/miden-vm repositories, focusing on backend development and code maintainability. Refactored data structures in Rust, replacing BTreeMap and BTreeSet with HashMap and HashSet to optimize transaction synchronization where ordering was unnecessary, and introduced a composite SQL index to accelerate queries. Enhanced technical documentation by clarifying field division semantics and correcting memory trace delta encoding commentary, ensuring alignment with architectural documentation. Collaborated through co-authored commits and maintained changelogs for traceability. The work emphasized database optimization, technical writing, and clear communication to improve developer onboarding and long-term code quality.