Einar developed a rate-limiting feature for the cognite-sdk-python repository, focusing on the PostgreSQL gateway to enhance stability and performance under high load. He implemented strict per-operation limits, allowing only one create, one update, and one delete per user operation, effectively mitigating resource-intensive usage patterns that could impact other tenants. Using Python and leveraging his expertise in API development, backend development, and database management, Einar ensured the solution was robust and traceable by linking it to a specific commit and issue. This targeted engineering work improved predictability and reduced the risk of performance degradation in the current release.