[Remote] Senior/Staff AI Engineer

Note: The job is a remote job and is open to candidates in USA. DDN is a company known for its high-performance infrastructure, and they are seeking a Senior/Staff AI Engineer to build the AI infrastructure layer that supports production models. This role focuses on optimizing systems for AI performance, including storage and distributed systems, ensuring efficiency and scalability in real-world applications.ResponsibilitiesBuild and optimize LLM serving and inference systems for production environmentsImprove performance across GPU and CPU pathwaysWork on KV cache, memory, storage, and throughput bottlenecksDesign and scale systems that support RAG and retrieval-heavy AI workloadsContribute to infrastructure where storage architecture and systems efficiency materially affect AI performanceSolve engineering problems at the intersection of AI, high-performance systems, and distributed infrastructureSkillsAn engineer who has spent meaningful time building or optimizing production AI systems, not just experimenting with modelsSomeone who understands how inference performance is shaped by the interaction between compute, memory, storage, and serving architectureDeep hands-on experience working close to the systems layer — for example, improving how workloads run across GPU and CPU resources, reducing bottlenecks, or tuning infrastructure for better throughput and latencyEvidence of real ownership in areas like model serving, retrieval, caching, storage, or distributed performance, rather than purely application-layer AI workThe ability to move comfortably between architecture decisions and hands-on implementation, especially in environments where efficiency and scale matterA background that suggests you can operate in technically demanding environments, whether that comes from AI infrastructure, high-performance systems, storage platforms, or adjacent distributed systems workPhD preferred, but far less important than having built serious systems in the real worldCompany OverviewDDN is the world’s leading AI and data intelligence company, powering the world’s most demanding AI workloads by keeping GPUs fed, efficient, and productive—at massive scale—so organizations can train, checkpoint, and infer faster with less footprint and power while achieving tremendous ROI from their AI investments. It was founded in 1998, and is headquartered in Chatsworth, California, USA, with a workforce of 1001-5000 employees. Its website is http://www.ddn.com.Company H1B SponsorshipDDN has a track record of offering H1B sponsorships, with 3 in 2026, 5 in 2025, 3 in 2024, 2 in 2023, 4 in 2022, 3 in 2021. Please note that this does not guarantee sponsorship for this specific role.