Senior Machine Learning Engineer, LLM Inference Optimization

Nebius·Londonsenior

En corto

→Optimizas inferencia de LLMs/VLMs para reducir latencia y costo por token.
→Trabajas en equipo con ingenieros de plataforma y kernel en sistemas de inferencia de producción.
→Destaca por aplicar técnicas avanzadas como speculative decoding y optimización de caché en entornos reales.

Professional proficiency in English required.

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¿Qué piden?

✓Experiencia comprobada en optimización de inferencia de LLMs/VLMs.
✓Dominio de frameworks de inferencia como vLLM, SGLang, TensorRT-LLM, Triton.
✓Habilidades en model compression: cuantización, distillación, entrenamiento consciente de cuantización.
✓Capacidad para diagnosticar y resolver regresiones en producción.
✓Experiencia con técnicas de aceleración como speculative decoding, kv-cache, continuous batching.
✓Conocimiento práctico de frameworks de benchmarking y evaluación reproducible.

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vLLMSGLangTensorRT-LLMTriton Inference ServerNVIDIA DynamoPythonC++DockerKubernetesBazel

¿A quién escribirle en Nebius?

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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. The role Nebius Token Factory is building fast, reliable, and cost-efficient inference services for frontier models. As a Senior Machine Learning Engineer on our Applied AI team, you will own model and endpoint optimization from model artifacts through production deployment. Your work will span model internals, inference engines, serving architecture, and benchmarking, with a focus on improving latency, throughput, memory efficiency, GPU utilization, and cost per token while maintaining model quality and reliability. This is a hands-on role in which you will work on complex optimization projects, diagnose difficult serving problems, and deliver measurable improvements in production. Working closely with kernel and platform engineers, you will evaluate serving configurations, resolve performance and quality regressions, and optimize inference for real-world workloads, supported by reproducible benchmarks and safe production rollouts. Your responsibilities : • Own optimization work for specific model families, customer endpoints, or serving backends. • Run engine comparisons and recommend practical serving configurations for specific workloads. • Debug model quality or performance regressions during production rollouts. • Optimize LLM and VLM endpoints for latency, throughput, memory efficiency, GPU utilization, quality, and cost per token. • Deploy, configure, benchmark, and extend inference engines such as vLLM, SGLang, TensorRT-LLM, Triton Inference Server, NVIDIA Dynamo, or similar systems. • Build and productionize model-compression workflows, including quantization, quantization-aware training, distillation, low-bit serving, and accuracy recovery. • Implement or integrate speculative decoding, draft-model approaches, KV -cache optimization, prefix caching, chunked prefill, continuous batching, and disaggregated prefill/decode serving. • Build reproducible benchmark har

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