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We are seeking a highly skilled Senior Site Reliability Engineer (SRE) / High-Performance Computing (HPC) Engineer to design, build, and operate the large-scale infrastructure that powers a $2.5B pre‑IPO technology company. Our systems run on massive distributed clusters, handling some of the most demanding workloads in cloud, AI, and data‑driven computing. In this role, you will be responsible for ensuring the reliability, scalability, and performance of mission‑critical platforms. You will optimize HPC workloads, streamline CI/CD for large‑scale clusters, and enable research and product teams to deliver innovations with speed and confidence. This is a hands‑on position with the opportunity to influence architecture, lead reliability initiatives, and solve some of the hardest problems in distributed systems and performance engineering.