Alain Romeyer developed a rate limiting middleware for the major/traefik repository, focusing on enhancing quota isolation and predictability. He implemented a per-middleware scoped rate limit counter, ensuring that each middleware instance maintained independent rate limits by scoping the counter key to both the source and middleware name. This approach reduced cross-limiter interference and aligned with the existing rate limiter architecture, minimizing integration risk. Working primarily in Go and leveraging backend development and API gateway expertise, Alain improved both observability and testability for per-middleware quotas. The work demonstrated thoughtful architectural alignment and addressed security and multi-tenant requirements in rate limiting.