OCI (Oracle Cloud) AI Infrastructure Innovation team is seeking a Senior Principal Performance Engineer to lead end-to-end performance strategy and engineering across the full stack application services, runtimes, operating systems, network, storage, and underlying hardware. You will define architecture changes, establish rigorous methodologies and tooling, and drive deep-dive investigations that unlock meaningful gains in latency, throughput, efficiency, and cost. If you thrive at troubleshooting complex distributed environments, and mentoring teams to deliver measurable improvements, this role offers the opportunity to advance the state of the art.