In April 2025, Karthik contributed to the cri-o/cri-o repository by developing a per-container memory limit metric to enhance observability and resource planning. He implemented the container_spec_memory_limit_bytes metric in Go, introducing logic to normalize unlimited memory values by mapping them to zero, which aligns with common monitoring tools. This approach improved the clarity and consistency of memory metrics across dashboards and alerting systems. Karthik also refactored related code for better maintainability, removing unused imports and ensuring metrics matched external monitoring stacks. His work demonstrated depth in containerization, metrics and performance monitoring, and system programming, addressing real-world operational needs.