Senior Software Engineer, Build Platform

Roblox is building the cloud platform that powers AI-driven creation on its platform. The Senior Software Engineer will develop and operate agent infrastructure, improve production workflows, build evaluation systems, and help deliver capabilities safely and reliably. Responsibilities Design, build, and operate services in the agent platform, including orchestration, session management, model routing, and tool/skill executionImprove the reliability, latency, and cost of multi-step agent workflows running in productionBuild and extend evaluation infrastructure so teams can measure quality and catch regressions before they reach creatorsPartner with Build product teams, ML infrastructure, and Safety to ship new capabilities quickly and safelyParticipate in on-call and help raise the bar for operational excellenceWrite clear technical specs, review code, and mentor other engineers