Backend system owner for a General Insurance Core Platform, accountable for architecture decisions, core business logic, production stability, and long-term maintainability. Defined and enforced backend architecture standards (layered design, transaction boundaries, messaging patterns) and executed the architectural redesign of high-load engines handling 1M+ records, achieving 30–50% performance improvement. Identified systemic bottlenecks across database access patterns and backend workflows to reduce query load and processing latency.