We are looking for a Senior Applied AI Engineer to join our on-site Research & Intelligence team in San Francisco. This role is for an experienced engineer who enjoys working close to research problems but is primarily motivated by building, shipping, and improving production systems. You will work on applied GenAI problems including agent evaluation, observability, and safety; translating proven techniques into scalable, reliable components within Alterion’s platform. This is not a pure research role. Success is measured by what ships and what improves in production, not by publications.