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Senior Applied Scientist, Efficient LLM Inference & Model Optimization

Nebius · Zurich

<div class="content-intro">About Nebius: Nebius is leading a new era in cloud infrastructure for the global AI economy. We are building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment, without the cost and complexity of building large in-house AI/ML infrastructure. Built by engineers, for engineers. From large-scale GPU orchestration to inference optimization, we own the hard problems across compute, storage, networking and applied AI. Listed on Nasdaq (NBIS) and headquartered in Amsterdam, we have a global footprint with R&D hubs across Europe, the UK, North America and Israel. Our team of 1,500+ includes hundreds of engineers with deep expertise across hardware, software and AI R&D.</div><h3>The role </h3> Nebius Token Factory needs scientists who can turn frontier inference bottlenecks into research problems, publish credible work, and then help ship the results into production. This is not a papers-only research role. The Applied Scientist is expected to design rigorous experiments, write strong code, collaborate with engineers, and convert research into deployed inference capabilities. A Senior Applied Scientist owns well-scoped research and production optimization projects. They can publish or prepare high-quality technical work while also producing code, experiments, and prototypes that engineers can use. Your responsibilities:  <ul> <li> Own focused research projects from hypothesis through experiment, ablation, prototype, and production handoff. </li> <li> Prepare internal reports, technical blogs, or papers when the work is externally credible. </li> <li> Partner directly with MLEs to ensure research prototypes become usable production components. </li> <li> Define and execute research programs in efficient LLM and VLM inference with measurable production impact. </li> <li> Invent, evaluate, and productionize methods for quantization, QAT, distillation, speculative decoding, KV-cache reuse, KV-cache compression, long-context inference, MoE routing, and model/runtime co-optimization. </li> <li> Build high-quality prototypes in PyTorch, Triton, CUDA-adjacent tooling, or inference-serving frameworks, then work with MLEs and platform engineers to productionize them. </li> <li> Design rigorous evaluation methodology covering quality, latency, throughput, numerical stability, memory footprint, tail latency, and cost per token. </li> <li> Publish papers, technical reports, blog posts, and open-source artifacts that build external credibility for Nebius Token Factory. </li> <li> Collaborate with MLE, GPU kernel, backend infrastructure, product, and customer teams to choose high-leverage research bets. </li> <li> Mentor engineers and scientists on experimental design, scientific rigor, and model/system tradeoffs. </li> </ul> Must-haves:  <ul> <li> <span data-highlighted="true" data-vc="highlighted-

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