Abdirizak Obsiye enhanced the alphagov/datagovuk_find repository by refining rate-limiting policies and implementing a global notification banner, focusing on both backend reliability and user communication. He introduced robust error handling in Rack::Attack using Ruby and RSpec, ensuring fallback defaults for empty environment variables to prevent server errors. In alphagov/govuk-dgu-charts, he standardized rate-limiting configurations across production, staging, and integration environments, supporting consistent API usage. Abdirizak also improved local development documentation with clear guidance on /etc/hosts setup for CKAN deployments. His work demonstrated depth in API development, configuration management, and testing, addressing both technical stability and user experience.